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RFC 2674 - Definitions of Managed Objects for Bridges with Traff


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Network Working Group                                             E. Bell
Request for Comments: 2674                                     3Com Corp.
Category: Standards Track                                        A. Smith
                                                         Extreme Networks
                                                              P. Langille
                                                       Newbridge Networks
                                                          A. Rijhsinghani
                                                        Cabletron Systems
                                                            K. McCloghrie
                                                            cisco Systems
                                                              August 1999

        Definitions of Managed Objects for Bridges with Traffic
        Classes, Multicast Filtering and Virtual LAN Extensions

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in TCP/IP based internets.
   In particular, it defines two MIB modules for managing the new
   capabilities of MAC bridges defined by the IEEE 802.1D-1998 MAC
   Bridges and the IEEE 802.1Q-1998 Virtual LAN (VLAN) standards for
   bridging between Local Area Network (LAN) segments.  One MIB module
   defines objects for managing the 'Traffic Classes' and 'Enhanced
   Multicast Filtering' components of IEEE 802.1D-1998.  The other MIB
   module defines objects for managing IEEE 802.1Q VLANs.

   Provisions are made for support of transparent bridging.  Provisions
   are also made so that these objects apply to bridges connected by
   subnetworks other than LAN segments.  This memo also includes several
   MIB modules in a manner that is compliant to the SMIv2 [V2SMI].

   This memo supplements RFC 1493 [BRIDGEMIB] and (to a lesser extent)
   RFC 1525 [SBRIDGEMIB].

Table of Contents

   1 The SNMP Management Framework ................................... 3
   2 Overview ........................................................ 4
   2.1 Scope ......................................................... 4
   3 Structure of MIBs ............................................... 5
   3.1 Structure of Extended Bridge MIB module ....................... 5
   3.1.1 Relationship to IEEE 802.1D-1998 Manageable Objects ......... 6
   3.1.2 Relationship to IEEE 802.1Q Manageable Objects .............. 8
   3.1.3 The dot1dExtBase Group ...................................... 8
   3.1.4 The dot1dPriority Group ..................................... 9
   3.1.5 The dot1dGarp Group ......................................... 9
   3.1.6 The dot1dGmrp Group ......................................... 9
   3.1.7 The dot1dTpHCPortTable ...................................... 9
   3.1.8 The dot1dTpPortOverflowTable ................................ 9
   3.2 Structure of Virtual Bridge MIB module ........................ 9
   3.2.1 Relationship to IEEE 802.1Q Manageable Objects .............. 9
   3.2.2 The dot1qBase Group .........................................13
   3.2.3 The dot1qTp Group ...........................................13
   3.2.4 The dot1qStatic Group .......................................13
   3.2.5 The dot1qVlan Group .........................................13
   3.3 Textual Conventions ...........................................13
   3.4 Relationship to Other MIBs ....................................14
   3.4.1 Relationship to the 'system' group ..........................14
   3.4.2 Relation to Interfaces MIB ..................................14
   3.4.2.1 Layering Model ............................................15
   3.4.2.2 ifStackTable ..............................................16
   3.4.2.3 ifRcvAddressTable .........................................16
   3.4.3 Relation to Original Bridge MIB .............................16
   3.4.3.1 The dot1dBase Group .......................................16
   3.4.3.2 The dot1dStp Group ........................................17
   3.4.3.3 The dot1dTp Group .........................................17
   3.4.3.4 The dot1dStatic Group .....................................17
   3.4.3.5 Additions to the Original Bridge MIB ......................18
   4 Definitions for Extended Bridge MIB .............................18
   5 Definitions for Virtual Bridge MIB ..............................39
   6 Acknowledgments .................................................80
   7 Security Considerations .........................................80
   8 References ......................................................81
   9 Authors' Addresses ..............................................84
   10 Intellectual Property ..........................................85
   11 Full Copyright Statement .......................................86

1.  The SNMP Management Framework

   The SNMP Management Framework presently consists of five major
   components:

    o  An overall architecture, described in an Architecture for
       Describing SNMP Management Frameworks [ARCH].

    o  Mechanisms for describing and naming objects and events for the
       purpose of management.  The first version of this Structure of
       Management Information (SMI) is called SMIv1 and described in STD
       16, RFC 1155 [V1SMI], STD 16, RFC 1212 [V1CONCISE] and RFC 1215
       [V1TRAPS]. The second version, called SMIv2, is described in STD
       58, RFC 2578 [V2SMI], STD 58, RFC 2579 [V2TC] and STD 58, RFC
       2580 [V2CONFORM].

    o  Message protocols for transferring management information.  The
       first version of the SNMP message protocol is called SNMPv1 and
       described in STD 15, RFC 1157 [V1PROTO].  A second version of the
       SNMP message protocol, which is not an Internet standards track
       protocol, is called SNMPv2c and described in RFC 1901
       [V2COMMUNITY] and RFC 1906 [V2TRANS].  The third version of the
       message protocol is called SNMPv3 and described in RFC 1906
       [V2TRANS], Message Processing and Dispatching [V3MPC] and User-
       based Security Model [V3USM].

    o  Protocol operations for accessing management information.  The
       first set of protocol operations and associated PDU formats is
       described in STD 15, RFC 1157 [V1PROTO].  A second set of
       protocol operations and associated PDU formats is described in
       RFC 1905 [V2PROTO].

    o  A set of fundamental applications described in SNMPv3
       Applications [V3APPS] and the view-based access control mechanism
       described in View-based Access Control Model [V3VACM].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the mechanisms defined in the SMI.

   This memo specifies a MIB module that is compliant to the SMIv2.  A
   MIB conforming to the SMIv1 can be produced through the appropriate
   translations.  The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (use of Counter64).  Some machine readable
   information in SMIv2 will be converted into textual descriptions in

   SMIv1 during the translation process.  However, this loss of machine
   readable information is not considered to change the semantics of the
   MIB.

2.  Overview

   A common device present in many networks is the Bridge.  This device
   is used to connect Local Area Network segments below the network
   layer.  These devices are often known as 'layer 2 switches'.

   There are two major modes defined for this bridging: Source-Route and
   transparent.  Source-Route bridging is described by IEEE 802.5
   [802.5].  and is not discussed further in this document.

   The transparent method of bridging is defined by IEEE 802.1D-1998
   [802.1D] which is an update to the original IEEE 802.1D specification
   [802.1D-ORIG].  Managed objects for that original specification of
   transparent bridging were defined in RFC 1493 [BRIDGEMIB].

   The original IEEE 802.1D is augmented by IEEE 802.1Q-1998 [802.1Q] to
   provide support for 'virtual bridged LANs' where a single bridged
   physical LAN network may be used to support multiple logical bridged
   LANs, each of which offers a service approximately the same as that
   defined by IEEE 802.1D.  Such virtual LANs (VLANs) are an integral
   feature of switched LAN networks.  A VLAN can be viewed as a group of
   end-stations on multiple LAN segments and can communicate as if they
   were on a single LAN.  IEEE 802.1Q defines port-based Virtual LANs
   where membership is determined by the bridge port on which data
   frames are received.  This memo defines the objects needed for the
   management of port-based VLANs in bridge entities.

   This memo defines those objects needed for the management of a
   bridging entity operating in the transparent mode, as well as some
   objects applicable to all types of bridges.  Managed objects for
   Source-Route bridging are defined in RFC 1525 [SRBRIDGEMIB].

2.1.  Scope

   This MIB includes a comprehensive set of managed objects which
   attempts to match the set defined in IEEE 802.1D and IEEE 802.1Q.
   However, to be consistent with the spirit of the SNMP Framework, a
   subjective judgement was made to omit the objects from those
   standards most 'costly' to implement in an agent and least
   'essential' for fault and configuration management.  The omissions
   are described in section 3 below.

   Historical note:

   The original bridge MIB [BRIDGEMIB] used the following principles for
   determining inclusion of an object in the BRIDGE-MIB module:

   (1)   Start with a small set of essential objects and add only as
         further objects are needed.

   (2)   Require objects be essential for either fault or configuration
         management.

   (3)   Consider evidence of current use and/or utility.

   (4)   Limit the total of objects.

   (5)   Exclude objects which are simply derivable from others in
         this or other MIBs.

   (6)   Avoid causing critical sections to be heavily instrumented.
         The  guideline that was followed is one counter per critical
         section per layer.

3.  Structure of MIBs

   This document defines additional objects, on top of those existing in
   the original BRIDGE-MIB module defined in [BRIDGEMIB]: that MIB
   module is to be maintained unchanged for backwards compatibility.
   Section 3.4.3 of the present document contains some recommendations
   regarding usage of objects in the original bridge MIB by devices
   implementing the enhancements defined here.

   Two MIB modules are defined here:

   (1)   Managed objects for an extended bridge MIB module P-BRIDGE-MIB
         for the traffic class and multicast filtering enhancements
         defined by IEEE 802.1D-1998 [802.1D].

   (2)   Managed objects for a virtual bridge MIB module Q-BRIDGE-MIB
         for the Virtual LAN bridging enhancements defined by IEEE
         802.1Q-1998 [802.1Q].

3.1.  Structure of Extended Bridge MIB module

   Objects in this MIB are arranged into groups.  Each group is
   organized as a set of related objects.  The overall structure and
   assignment of objects to their groups is shown below.

3.1.1.  Relationship to IEEE 802.1D-1998 Manageable Objects

   This section contains a cross-reference to the objects defined in
   IEEE 802.1D-1998 [802.1D].  It also details those objects that are
   not considered necessary in this MIB module.

   Some objects defined by IEEE 802.1D-1998 have been included in the
   virtual bridge MIB module rather than this one: entries in
   dot1qTpGroupTable, dot1qForwardAllTable and
   dot1qForwardUnregisteredTable are required for virtual bridged LANs
   with additional indexing (e.g. per-VLAN, per-FDB) and so are not
   defined here.  Instead, devices which do not implement virtual
   bridged LANs but do implement the Extended Forwarding Services
   defined by IEEE 802.1D (i.e. dynamic learning of multicast group
   addresses and group service requirements in the filtering database)
   should implement these tables with a fixed value for dot1qFdbId (the
   value 1 is recommended) or dot1qVlanIndex (the value 1 is
   recommended).  Devices which support Extended Filtering Services
   should support dot1qTpGroupTable, dot1qForwardAllTable and
   dot1qForwardUnregisteredTable.

   Extended Bridge MIB Name            IEEE 802.1D-1998 Name

   dot1dExtBase                        Bridge
     dot1dDeviceCapabilities
       dot1dExtendedFilteringServices
       dot1dTrafficClasses
     dot1dTrafficClassesEnabled
     dot1dGmrpStatus                    .ApplicantAdministrativeControl
   dot1dPriority
     dot1dPortPriorityTable
       dot1dPortDefaultUserPriority     .UserPriority
       dot1dPortNumTrafficClasses
     dot1dUserPriorityRegenTable        .UserPriorityRegenerationTable
       dot1dUserPriority
       dot1dRegenUserPriority
     dot1dTrafficClassTable             .TrafficClassTable
       dot1dTrafficClassPriority
       dot1dTrafficClass
     dot1dPortOutboundAccessPriorityTable
                                        .OutboundAccessPriorityTable
   dot1dPortOutboundAccessPriority
   dot1dGarp
     dot1dPortGarpTable
       dot1dPortGarpJoinTime            .JoinTime
       dot1dPortGarpLeaveTime           .LeaveTime
       dot1dPortGarpLeaveAllTime        .LeaveAllTime
   dot1dGmrp
     dot1dPortGmrpTable
       dot1dPortGmrpStatus             .ApplicantAdministrativeControl
       dot1dPortGmrpFailedRegistrations .FailedRegistrations
       dot1dPortGmrpLastPduOrigin       .OriginatorOfLastPDU
   dot1dTp
     dot1dTpHCPortTable
       dot1dTpHCPortInFrames            .BridgePort.FramesReceived
       dot1dTpHCPortOutFrames             .ForwardOutBound
       dot1dTpHCPortInDiscards            .DiscardInbound
     dot1dTpPortOverflowTable
       dot1dTpPortInOverflowFrames      .BridgePort.FramesReceived
       dot1dTpPortOutOverflowFrames       .ForwardOutBound
       dot1dTpPortInOverflowDiscards      .DiscardInbound

   The following IEEE 802.1D-1998 management objects have not been
   included in the Bridge MIB for the indicated reasons.

   IEEE 802.1D-1998 Object           Disposition

   Bridge.StateValue                 not considered useful
   Bridge.ApplicantAdministrativeControl
                                     not provided per-attribute
                                     (e.g. per-VLAN, per-Group).
                                     Only per-{device,port,application}
                                     control is provided in this MIB.

3.1.2.  Relationship to IEEE 802.1Q Manageable Objects

   This section contains section number cross-references to manageable
   objects defined in IEEE 802.1Q-1998 [802.1Q].  These objects have
   been included in this MIB as they provide a natural fit with the IEEE
   802.1D objects with which they are co-located.

   Extended Bridge MIB Name            IEEE 802.1Q-1998 Section and Name

   dot1dExtBase                        Bridge
     dot1dDeviceCapabilities
       dot1qStaticEntryIndividualPort   5.2 implementation options
       dot1qIVLCapable
       dot1qSVLCapable
       dot1qHybridCapable
       dot1qConfigurablePvidTagging     12.10.1.1 read bridge vlan
                                                 config
       dot1dLocalVlanCapable
     dot1dPortCapabilitiesTable
       dot1dPortCapabilities
         dot1qDot1qTagging              5.2 implementation options
         dot1qConfigurableAcceptableFrameTypes
                                        5.2 implementation options
         dot1qIngressFiltering          5.2 implementation options

3.1.3.  The dot1dExtBase Group

   This group contains the objects which are applicable to all bridges
   implementing the traffic class and multicast filtering features of
   IEEE 802.1D-1998 [802.1D].  It includes per-device configuration of
   GARP and GMRP protocols.  This group will be implemented by all
   devices which implement the extensions defined in 802.1D-1998.

3.1.4.  The dot1dPriority Group

   This group contains the objects for configuring and reporting status
   of priority-based queuing mechanisms in a bridge. This includes per-
   port user_priority treatment, mapping of user_priority in frames into
   internal traffic classes and outbound user_priority and
   access_priority.

3.1.5.  The dot1dGarp Group

   This group contains the objects for configuring and reporting on
   operation of the Generic Attribute Registration Protocol (GARP).

3.1.6.  The dot1dGmrp Group

   This group contains the objects for configuring and reporting on
   operation of the GARP Multicast Registration Protocol (GMRP).

3.1.7.  The dot1dTpHCPortTable

   This table extends the dot1dTp group from the original bridge MIB
   [BRIDGEMIB] and contains the objects for reporting port bridging
   statistics for high capacity network interfaces.

3.1.8.  The dot1dTpPortOverflowTable

   This table extends the dot1dTp group from the original bridge MIB
   [BRIDGEMIB] and contains the objects for reporting the upper bits of
   port bridging statistics for high capacity network interfaces for
   when 32-bit counters are inadequate.

3.2.  Structure of Virtual Bridge MIB module

   Objects in this MIB are arranged into groups.  Each group is
   organized as a set of related objects.  The overall structure and
   assignment of objects to their groups is shown below.  Some
   manageable objects defined in the original bridge MIB [BRIDGEMIB]
   need to be indexed differently when they are used in a VLAN bridging
   environment: these objects are, therefore, effectively duplicated by
   new objects with different indexing which are defined in the Virtual
   Bridge MIB.

3.2.1.  Relationship to IEEE 802.1Q Manageable Objects

   This section contains section-number cross-references to manageable
   objects defined in clause 12 of IEEE 802.1Q-1998 [802.1Q].  It also
   details those objects that are not considered necessary in this MIB
   module.

   Note: unlike IEEE 802.1D-1998, IEEE 802.1Q-1998 [802.1Q] did not
   define exact syntax for a set of managed objects: the following
   cross-references indicate the section numbering of the descriptions
   of management operations from clause 12 in the latter document.

   Virtual Bridge MIB object          IEEE 802.1Q-1998 Reference

   dot1qBase
     dot1qVlanVersionNumber           12.10.1.1 read bridge vlan config
     dot1qMaxVlanId                   12.10.1.1 read bridge vlan config
     dot1qMaxSupportedVlans           12.10.1.1 read bridge vlan config
     dot1qNumVlans
     dot1qGvrpStatus                  12.9.2.1/2 read/set garp
                                                applicant controls
   dot1qTp
     dot1qFdbTable
       dot1qFdbId
       dot1qFdbDynamicCount           12.7.1.1.3 read filtering d/base
     dot1qTpFdbTable
       dot1qTpFdbAddress
       dot1qTpFdbPort
       dot1qTpFdbStatus
     dot1qTpGroupTable                12.7.7.1 read filtering entry
       dot1qTpGroupAddress
       dot1qTpGroupEgressPorts
       dot1qTpGroupLearnt
     dot1qForwardAllTable             12.7.7.1 read filtering entry
       dot1qForwardAllPorts
       dot1qForwardAllStaticPorts
       dot1qForwardAllForbiddenPorts
     dot1qForwardUnregisteredTable    12.7.7.1 read filtering entry
       dot1qForwardUnregisteredPorts
       dot1qForwardUnregisteredStaticPorts
       dot1qForwardUnregisteredForbiddenPorts
   dot1qStatic
     dot1qStaticUnicastTable          12.7.7.1 create/delete/read
                                                filtering entry
                                      12.7.6.1 read permanent database
       dot1qStaticUnicastAddress
       dot1qStaticUnicastReceivePort
       dot1qStaticUnicastAllowedToGoTo
       dot1qStaticUnicastStatus
     dot1qStaticMulticastTable        12.7.7.1 create/delete/read
                                                filtering entry
                                      12.7.6.1 read permanent database
       dot1qStaticMulticastAddress
       dot1qStaticMulticastReceivePort
       dot1qStaticMulticastStaticEgressPorts

       dot1qStaticMulticastForbiddenEgressPorts
       dot1qStaticMulticastStatus
   dot1qVlan
     dot1qVlanNumDeletes
     dot1qVlanCurrentTable            12.10.2.1 read vlan configuration
                                      12.10.3.5 read VID to FID
                                                allocations
                                      12.10.3.6 read FID allocated to
                                                VID
                                      12.10.3.7 read VIDs allocated to
                                                FID
       dot1qVlanTimeMark
       dot1qVlanIndex
       dot1qVlanFdbId
       dot1qVlanCurrentEgressPorts
       dot1qVlanCurrentUntaggedPorts
       dot1qVlanStatus
       dot1qVlanCreationTime
     dot1qVlanStaticTable             12.7.7.1/2/3 create/delete/read
                                                filtering entry
                                      12.7.6.1 read permanent database
                                      12.10.2.2 create vlan config
                                      12.10.2.3 delete vlan config
       dot1qVlanStaticName            12.4.1.3 set bridge name
       dot1qVlanStaticEgressPorts
       dot1qVlanForbiddenEgressPorts
       dot1qVlanStaticUntaggedPorts
       dot1qVlanStaticRowStatus
     dot1qNextFreeLocalVlanIndex
     dot1qPortVlanTable               12.10.1.1 read bridge vlan
                                                configuration
       dot1qPvid                      12.10.1.2 configure PVID values
       dot1qPortAcceptableFrameTypes  12.10.1.3 configure acceptable
                                                frame types parameter
       dot1qPortIngressFiltering      12.10.1.4 configure ingress
                                                filtering parameters
       dot1qPortGvrpStatus            12.9.2.2 read/set garp applicant
                                                controls
       dot1qPortGvrpFailedRegistrations
       dot1qPortGvrpLastPduOrigin
     dot1qPortVlanStatisticsTable     12.6.1.1 read forwarding port
                                                counters
       dot1qTpVlanPortInFrames
       dot1qTpVlanPortOutFrames
       dot1qTpVlanPortInDiscards
       dot1qTpVlanPortInOverflowFrames
       dot1qTpVlanPortOutOverflowFrames
       dot1qTpVlanPortInOverflowDiscards

     dot1qPortVlanHCStatisticsTable   12.6.1.1 read forwarding port
                                                counters
       dot1qTpVlanPortHCInFrames
       dot1qTpVlanPortHCOutFrames
       dot1qTpVlanPortHCInDiscards
     dot1qLearningConstraintsTable    12.10.3.1/3/4 read/set/delete
                                              vlan learning constraints
                                      12.10.3.2 read vlan learning
                                              constraints for VID
       dot1qConstraintVlan
       dot1qConstraintSet
       dot1qConstraintType
       dot1qConstraintStatus
     dot1qConstraintSetDefault
     dot1qConstraintTypeDefault

   The following IEEE 802.1Q management objects have not been included
   in the Bridge MIB for the indicated reasons.

      IEEE 802.1Q-1998 Operation          Disposition

      reset bridge (12.4.1.4)             not considered useful

      reset vlan bridge (12.10.1.5)       not considered useful

      read forwarding port counters (12.6.1.1)
        discard on error details          not considered useful

      read permanent database (12.7.6.1)
        permanent database size           not considered useful
        number of static filtering        count rows in
           entries                          dot1qStaticUnicastTable +
                                            dot1qStaticMulticastTable
        number of static VLAN             count rows in
          registration entries              dot1qVlanStaticTable

      read filtering entry range          use GetNext operation.
         (12.7.7.4)

      read filtering database (12.7.1.1)
        filtering database size           not considered useful
        number of dynamic group address   count rows applicable to each
            entries (12.7.1.3)            FDB in dot1dTpGroupTable

      read garp state (12.9.3.1)          not considered useful

      notify vlan registration failure    not considered useful
        (12.10.1.6)

      notify learning constraint violation
        (12.10.3.10)                      not considered useful

3.2.2.  The dot1qBase Group

   This mandatory group contains the objects which are applicable to all
   bridges implementing IEEE 802.1Q virtual LANs.

3.2.3.  The dot1qTp Group

   This group contains objects that control the operation and report the
   status of transparent bridging.  This includes management of the
   dynamic Filtering Databases for both unicast and multicast
   forwarding.  This group will be implemented by all bridges that
   perform destination-address filtering.

3.2.4.  The dot1qStatic Group

   This group contains objects that control static configuration
   information for transparent bridging.  This includes management of
   the static entries in the Filtering Databases for both unicast and
   multicast forwarding.

3.2.5.  The dot1qVlan Group

   This group contains objects that control configuration and report
   status of the Virtual LANs known to a bridge.  This includes
   management of the statically configured VLANs as well as reporting
   VLANs discovered by other means e.g. GVRP.  It also controls
   configuration and reports status of per-port objects relating to
   VLANs and reports traffic statistics.  It also provides for
   management of the VLAN Learning Constraints.

3.3.  Textual Conventions

   The datatypes MacAddress, BridgeId, Timeout, EnabledStatus, PortList,
   VlanIndex and VlanId are used as textual conventions in this
   document.  These textual conventions have NO effect on either the
   syntax nor the semantics of any managed object.  Objects defined
   using these conventions are always encoded by means of the rules that
   define their primitive type.  Hence, no changes to the SMI or the
   SNMP are necessary to accommodate these textual conventions which are
   adopted merely for the convenience of readers.

3.4.  Relationship to Other MIBs

   As described above, some IEEE 802.1D management objects have not been
   included in this MIB because they overlap with objects in other MIBs
   applicable to a bridge implementing this MIB.  In particular, it is
   assumed that a bridge implementing this MIB will also implement (at
   least) the 'system' group defined in MIB-II [MIB2], the 'interfaces'
   group defined in [INTERFACEMIB] and the original bridge MIB
   [BRIDGEMIB].

3.4.1.  Relationship to the 'system' group

   In MIB-II, the 'system' group is defined as being mandatory for all
   systems such that each managed entity contains one instance of each
   object in the 'system' group.  Thus, those objects apply to the
   entity as a whole irrespective of whether the entity's sole
   functionality is bridging, or whether bridging is only a subset of
   the entity's functionality.

3.4.2.  Relation to Interfaces MIB

   The Interfaces Group MIB [INTERFACEMIB], requires that any MIB which
   is an adjunct of the Interfaces Group MIB, clarify specific areas
   within the Interfaces Group MIB.  These areas were intentionally left
   vague in the Interfaces Group MIB to avoid over-constraining the MIB,
   thereby precluding management of certain media-types.

   The Interfaces Group MIB enumerates several areas which a media-
   specific MIB must clarify.  Each of these areas is addressed in a
   following subsection.  The implementor is referred to the Interfaces
   Group MIB in order to understand the general intent of these areas.

   In the Interfaces Group MIB, the 'interfaces' group is defined as
   being mandatory for all systems and contains information on an
   entity's interfaces, where each interface is thought of as being
   attached to a `subnetwork'.  (Note that this term is not to be
   confused with `subnet' which refers to an addressing partitioning
   scheme used in the Internet suite of protocols.)  The term 'segment'
   is used in this memo to refer to such a subnetwork, whether it be an
   Ethernet segment, a 'ring', a WAN link, or even an X.25 virtual
   circuit.

   Implicit in this Extended Bridge MIB is the notion of ports on a
   bridge.  Each of these ports is associated with one interface of the
   'interfaces' group (one row in ifTable) and, in most situations, each
   port is associated with a different interface.  However, there are
   situations in which multiple ports are associated with the same

   interface.  An example of such a situation would be several ports
   each corresponding one-to-one with several X.25 virtual circuits but
   all on the same interface.

   Each port is uniquely identified by a port number.  A port number has
   no mandatory relationship to an interface number, but in the simple
   case a port number will have the same value as the corresponding
   interface's interface number.  Port numbers are in the range
   (1..dot1dBaseNumPorts).

   Some entities perform other functionality as well as bridging through
   the sending and receiving of data on their interfaces.  In such
   situations, only a subset of the data sent/received on an interface
   is within the domain of the entity's bridging functionality.  This
   subset is considered to be delineated according to a set of
   protocols, with some protocols being bridged, and other protocols not
   being bridged.  For example, in an entity which exclusively performed
   bridging, all protocols would be considered as being bridged, whereas
   in an entity which performed IP routing on IP datagrams and only
   bridged other protocols, only the non-IP data would be considered as
   being bridged.  Thus, this Extended Bridge MIB (and in particular,
   its counters) is applicable only to that subset of the data on an
   entity's interfaces which is sent/received for a protocol being
   bridged.  All such data is sent/received via the ports of the bridge.

3.4.2.1.  Layering Model

   This memo assumes the interpretation of the Interfaces Group to be in
   accordance with the Interfaces Group MIB [INTERFACEMIB] which states
   that the interfaces table (ifTable) contains information on the
   managed resource's interfaces and that each sub-layer below the
   internetwork layer of a network interface is considered an interface.

   This document recommends that, within an entity, VLANs which are
   instantiated as an entry in dot1qVlanCurrentTable by either
   management configuration through dot1qVlanStaticTable or by dynamic
   means (e.g.  through GVRP), are NOT also represented by an entry in
   ifTable.

   Where an entity contains higher-layer protocol entities e.g. IP-layer
   interfaces that transmit and receive traffic to/from a VLAN, these
   should be represented in the ifTable as interfaces of type
   propVirtual(53).  Protocol-specific types such as l3ipxvlan(137)
   should not be used here since there is no implication that the bridge
   will perform any protocol filtering before delivering up to these
   virtual interfaces.

3.4.2.2.  ifStackTable

   In addition, the Interfaces Group MIB [INTERFACEMIB] defines a table
   'ifStackTable' for describing the relationship between logical
   interfaces within an entity.  It is anticipated that implementors
   will use this table to describe the binding of e.g. IP interfaces to
   physical ports, although the presence of VLANs makes the
   representation less than perfect for showing connectivity: the
   ifStackTable cannot represent the full capability of the IEEE 802.1Q
   VLAN bridging standard since that makes a distinction between VLAN
   bindings on 'ingress' to and 'egress' from a port: these
   relationships may or may not be symmetrical whereas Interface MIB
   Evolution assumes a symmetrical binding for transmit and receive.
   This makes it necessary to define other manageable objects for
   configuring which ports are members of which VLANs.

3.4.2.3.  ifRcvAddressTable

   This table contains all MAC addresses, unicast, multicast, and
   broadcast, for which an interface will receive packets and forward
   them up to a higher layer entity for local consumption.  Note that
   this does not include addresses for data-link layer control protocols
   such as Spanning-Tree, GMRP or GVRP.  The format of the address,
   contained in ifRcvAddressAddress, is the same as for ifPhysAddress.

   This table does not include unicast or multicast addresses which are
   accepted for possible forwarding out some other port.  This table is
   explicitly not intended to provide a bridge address filtering
   mechanism.

3.4.3.  Relation to Original Bridge MIB

   This section defines how objects in the original bridge MIB module
   [BRIDGEMIB] should be represented for devices which implement the
   extensions: some of the old objects are less useful in such devices
   but must still be implemented for reasons of backwards compatibility.
   Note that formal conformance statements for that MIB module do not
   exist since it is defined in SMIv1.

3.4.3.1.  The dot1dBase Group

   This mandatory group contains the objects which are applicable to all
   types of bridges.  Interpretation of this group is unchanged.

3.4.3.2.  The dot1dStp Group

   This group contains the objects that denote the bridge's state with
   respect to the Spanning Tree Protocol.  Interpretation of this group
   is unchanged.

3.4.3.3.  The dot1dTp Group

   This group contains objects that describe the entity's state with
   respect to transparent bridging.

   In a device operating with a single Filtering Database,
   interpretation of this group is unchanged.

   In a device supporting multiple Filtering Databases, this group is
   interpreted as follows:

   dot1dTpLearnedEntryDiscards
        The number of times that *any* of the FDBs became full.

   dot1dTpAgingTime
        This applies to all Filtering Databases.

   dot1dTpFdbTable
        Report MAC addresses learned on each port, regardless of which
        Filtering Database they have been learnt in.  If an address has
        been learnt in multiple databases on a single port, report it
        only once.  If an address has been learnt in multiple
        databases on more than one port, report the entry on any one of
        the valid ports.

   dot1dTpPortTable
        This table is port-based and is not affected by multiple
        Filtering Databases or multiple VLANs.  The counters should
        include frames received or transmitted for all VLANs.  Note that
        equivalent 64-bit port statistics counters, as well as other
        objects to represent the upper 32 bits of these counters, are
        defined in this document for high capacity network interfaces.
        These have confromance statements to indicate for which speeds of
        interface they are required.

3.4.3.4.  The dot1dStatic Group

   This optional group contains objects that describe the configuration
   of destination-address filtering.

   In a device operating with a single Filtering Database,
   interpretation of this group is unchanged.

   In a device supporting multiple Filtering Databases, this group is
   interpreted as follows:

   dot1dStaticTable
        Entries read from this table include all static entries from all
        of the Filtering Databases.  Entries for the same MAC address
        and receive port in more than one Filtering Database must appear
        only once since these are the indices of this table.  This table
        should be implemented as read-only in devices that support
        multiple Forwarding Databases - instead, write access should be
        provided through dot1qStaticUnicastTable and
        dot1qStaticMulticastTable, as defined in this document.

3.4.3.5.  Additions to the Original Bridge MIB

   In addition to the objects in the original bridge MIB [BRIDGEMIB],
   this document contains:

    (1)   support for multiple traffic classes and dynamic multicast
          filtering as per IEEE 802.1D-1998 [802.1D].

    (2)   support for bridged Virtual LANs as per IEEE 802.1Q-1998
          [802.1Q].

    (3)   support for 64-bit versions of original bridge MIB [BRIDGEMIB]
          port counters.

4.  Definitions for Extended Bridge MIB

P-BRIDGE-MIB DEFINITIONS ::= BEGIN

-- -------------------------------------------------------------
-- MIB for IEEE 802.1p devices
-- -------------------------------------------------------------

IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE, Counter32, Counter64
        FROM SNMPv2-SMI
    TruthValue, TimeInterval, MacAddress, TEXTUAL-CONVENTION
        FROM SNMPv2-TC
    MODULE-COMPLIANCE, OBJECT-GROUP
        FROM SNMPv2-CONF
    dot1dTp, dot1dTpPort, dot1dBridge,
    dot1dBasePortEntry, dot1dBasePort
        FROM BRIDGE-MIB;

pBridgeMIB MODULE-IDENTITY
    LAST-UPDATED "9908250000Z"
    ORGANIZATION "IETF Bridge MIB Working Group"
    CONTACT-INFO
        "       Les Bell
        Postal: 3Com Europe Ltd.
                3Com Centre, Boundary Way
                Hemel Hempstead, Herts. HP2 7YU
                UK
         Phone: +44 1442 438025
         Email: Les_Bell@3Com.com

                Andrew Smith
        Postal: Extreme Networks
                3585 Monroe St.
                Santa Clara CA 95051
                USA
         Phone: +1 408 579 2821
         Email: andrew@extremenetworks.com

                Paul Langille
        Postal: Newbridge Networks
                5 Corporate Drive
                Andover, MA 01810
                USA
         Phone: +1 978 691 4665
         Email: langille@newbridge.com

                Anil Rijhsinghani
        Postal: Cabletron Systems
                50 Minuteman Road
                Andover, MA 01810
                USA
         Phone: +1 978 684 1295
         Email: anil@cabletron.com

                Keith McCloghrie
        Postal: cisco Systems, Inc.
                170 West Tasman Drive
                San Jose, CA 95134-1706
                USA
         Phone: +1 408 526 5260
         Email: kzm@cisco.com"

    DESCRIPTION
        "The Bridge MIB Extension module for managing Priority
        and Multicast Filtering, defined by IEEE 802.1D-1998."

-- revision history

    REVISION     "9908250000Z"
    DESCRIPTION
         "Initial version, published as RFC 2674."

    ::= { dot1dBridge 6 }

pBridgeMIBObjects OBJECT IDENTIFIER ::= { pBridgeMIB 1 }

-- -------------------------------------------------------------
-- Textual Conventions
-- -------------------------------------------------------------

EnabledStatus ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
        "A simple status value for the object."
    SYNTAX      INTEGER { enabled(1), disabled(2) }

-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- groups in the P-BRIDGE MIB
-- -------------------------------------------------------------

dot1dExtBase    OBJECT IDENTIFIER ::= { pBridgeMIBObjects 1 }
dot1dPriority   OBJECT IDENTIFIER ::= { pBridgeMIBObjects 2 }
dot1dGarp       OBJECT IDENTIFIER ::= { pBridgeMIBObjects 3 }
dot1dGmrp       OBJECT IDENTIFIER ::= { pBridgeMIBObjects 4 }

-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- the dot1dExtBase group
-- -------------------------------------------------------------

dot1dDeviceCapabilities OBJECT-TYPE
    SYNTAX      BITS {
        dot1dExtendedFilteringServices(0),
                              -- can perform filtering of
                              -- individual multicast addresses
                              -- controlled by GMRP.
        dot1dTrafficClasses(1),
                              -- can map user priority to
                              -- multiple traffic classes.

        dot1qStaticEntryIndividualPort(2),
                              -- dot1qStaticUnicastReceivePort &
                              -- dot1qStaticMulticastReceivePort
                              -- can represent non-zero entries.
        dot1qIVLCapable(3),   -- Independent VLAN Learning.
        dot1qSVLCapable(4),   -- Shared VLAN Learning.
        dot1qHybridCapable(5),
                              -- both IVL & SVL simultaneously.
        dot1qConfigurablePvidTagging(6),
                              -- whether the implementation
                              -- supports the ability to
                              -- override the default PVID
                              -- setting and its egress status
                              -- (VLAN-Tagged or Untagged) on
                              -- each port.
        dot1dLocalVlanCapable(7)
                              -- can support multiple local
                              -- bridges, outside of the scope
                              -- of 802.1Q defined VLANs.
    }
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "Indicates the optional parts of IEEE 802.1D and 802.1Q
        that are implemented by this device and are manageable
        through this MIB.  Capabilities that are allowed on a
        per-port basis are indicated in dot1dPortCapabilities."
    REFERENCE
        "ISO/IEC 15802-3 Section 5.2,
        IEEE 802.1Q/D11 Section 5.2, 12.10.1.1.3/b/2"
    ::= { dot1dExtBase 1 }

dot1dTrafficClassesEnabled OBJECT-TYPE
    SYNTAX      TruthValue
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The value true(1) indicates that Traffic Classes are
        enabled on this bridge.  When false(2), the bridge
        operates with a single priority level for all traffic."
    DEFVAL      { true }
    ::= { dot1dExtBase 2 }

dot1dGmrpStatus OBJECT-TYPE
    SYNTAX      EnabledStatus
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION

        "The administrative status requested by management for
        GMRP.  The value enabled(1) indicates that GMRP should
        be enabled on this device, in all VLANs, on all ports
        for which it has not been specifically disabled.  When
        disabled(2), GMRP is disabled, in all VLANs, on all
        ports and all GMRP packets will be forwarded
        transparently.  This object affects both Applicant and
        Registrar state machines.  A transition from disabled(2)
        to enabled(1) will cause a reset of all GMRP state
        machines on all ports."
    DEFVAL      { enabled }
    ::= { dot1dExtBase 3 }

-- -------------------------------------------------------------
-- Port Capabilities Table
-- -------------------------------------------------------------

dot1dPortCapabilitiesTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1dPortCapabilitiesEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table that contains capabilities information about
        every port that is associated with this bridge."
    ::= { dot1dExtBase 4 }

dot1dPortCapabilitiesEntry OBJECT-TYPE
    SYNTAX      Dot1dPortCapabilitiesEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A set of capabilities information about this port
        indexed by dot1dBasePort."
    AUGMENTS { dot1dBasePortEntry }
    ::= { dot1dPortCapabilitiesTable 1 }

Dot1dPortCapabilitiesEntry ::=
    SEQUENCE {
        dot1dPortCapabilities
            BITS
    }

dot1dPortCapabilities OBJECT-TYPE
    SYNTAX      BITS {
        dot1qDot1qTagging(0), -- supports 802.1Q VLAN tagging of
                              -- frames and GVRP.
        dot1qConfigurableAcceptableFrameTypes(1),
                              -- allows modified values of

                              -- dot1qPortAcceptableFrameTypes.
        dot1qIngressFiltering(2)
                              -- supports the discarding of any
                              -- frame received on a Port whose
                              -- VLAN classification does not
                              -- include that Port in its Member
                              -- set.
    }
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "Indicates the parts of IEEE 802.1D and 802.1Q that are
        optional on a per-port basis that are implemented by
        this device and are manageable through this MIB."
    REFERENCE
        "ISO/IEC 15802-3 Section 5.2,
        IEEE 802.1Q/D11 Section 5.2"
    ::= { dot1dPortCapabilitiesEntry 1 }

-- -------------------------------------------------------------
-- the dot1dPriority group
-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- Port Priority Table
-- -------------------------------------------------------------

dot1dPortPriorityTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1dPortPriorityEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table that contains information about every port that
        is associated with this transparent bridge."
    ::= { dot1dPriority 1 }

dot1dPortPriorityEntry OBJECT-TYPE
    SYNTAX      Dot1dPortPriorityEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A list of Default User Priorities for each port of a
        transparent bridge.  This is indexed by dot1dBasePort."
    AUGMENTS { dot1dBasePortEntry }
    ::= { dot1dPortPriorityTable 1 }

Dot1dPortPriorityEntry ::=
    SEQUENCE {

        dot1dPortDefaultUserPriority
            INTEGER,
        dot1dPortNumTrafficClasses
            INTEGER
    }

dot1dPortDefaultUserPriority OBJECT-TYPE
    SYNTAX      INTEGER (0..7)
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The default ingress User Priority for this port.  This
        only has effect on media, such as Ethernet, that do not
        support native User Priority."
    ::= { dot1dPortPriorityEntry 1 }

dot1dPortNumTrafficClasses OBJECT-TYPE
    SYNTAX      INTEGER (1..8)
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The number of egress traffic classes supported on this
        port.  This object may optionally be read-only."
    ::= { dot1dPortPriorityEntry 2 }

-- -------------------------------------------------------------
-- User Priority Regeneration Table
-- -------------------------------------------------------------

dot1dUserPriorityRegenTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1dUserPriorityRegenEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A list of Regenerated User Priorities for each received
        User Priority on each port of a bridge.  The Regenerated
        User Priority value may be used to index the Traffic
        Class Table for each input port.  This only has effect
        on media that support native User Priority.  The default
        values for Regenerated User Priorities are the same as
        the User Priorities."
    REFERENCE
        "ISO/IEC 15802-3 Section 6.4"
    ::= { dot1dPriority 2 }

dot1dUserPriorityRegenEntry OBJECT-TYPE
    SYNTAX      Dot1dUserPriorityRegenEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A mapping of incoming User Priority to a Regenerated
        User Priority."
    INDEX   { dot1dBasePort, dot1dUserPriority }
    ::= { dot1dUserPriorityRegenTable 1 }

Dot1dUserPriorityRegenEntry ::=
    SEQUENCE {
        dot1dUserPriority
            INTEGER,
        dot1dRegenUserPriority
            INTEGER
    }

dot1dUserPriority OBJECT-TYPE
    SYNTAX      INTEGER (0..7)
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The User Priority for a frame received on this port."
    ::= { dot1dUserPriorityRegenEntry 1 }

dot1dRegenUserPriority OBJECT-TYPE
    SYNTAX      INTEGER (0..7)
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The Regenerated User Priority the incoming User
        Priority is mapped to for this port."
    ::= { dot1dUserPriorityRegenEntry 2 }

-- -------------------------------------------------------------
-- Traffic Class Table
-- -------------------------------------------------------------

dot1dTrafficClassTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1dTrafficClassEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table mapping evaluated User Priority to Traffic
        Class, for forwarding by the bridge.  Traffic class is a
        number in the range (0..(dot1dPortNumTrafficClasses-1))."
    REFERENCE

        "ISO/IEC 15802-3 Table 7-2"
    ::= { dot1dPriority 3 }

dot1dTrafficClassEntry OBJECT-TYPE
    SYNTAX      Dot1dTrafficClassEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "User Priority to Traffic Class mapping."
    INDEX   { dot1dBasePort, dot1dTrafficClassPriority }
    ::= { dot1dTrafficClassTable 1 }

Dot1dTrafficClassEntry ::=
    SEQUENCE {
        dot1dTrafficClassPriority
            INTEGER,
        dot1dTrafficClass
            INTEGER
    }

dot1dTrafficClassPriority OBJECT-TYPE
    SYNTAX      INTEGER (0..7)
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The Priority value determined for the received frame.
        This value is equivalent to the priority indicated in
        the tagged frame received, or one of the evaluated
        priorities, determined according to the media-type.

        For untagged frames received from Ethernet media, this
        value is equal to the dot1dPortDefaultUserPriority value
        for the ingress port.

        For untagged frames received from non-Ethernet media,
        this value is equal to the dot1dRegenUserPriority value
        for the ingress port and media-specific user priority."
    ::= { dot1dTrafficClassEntry 1 }

dot1dTrafficClass OBJECT-TYPE
    SYNTAX      INTEGER (0..7)
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The Traffic Class the received frame is mapped to."
    ::= { dot1dTrafficClassEntry 2 }

-- -------------------------------------------------------------

-- Outbound Access Priority Table
-- -------------------------------------------------------------

dot1dPortOutboundAccessPriorityTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1dPortOutboundAccessPriorityEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table mapping Regenerated User Priority to Outbound
        Access Priority.  This is a fixed mapping for all port
        types, with two options for 802.5 Token Ring."
    REFERENCE
        "ISO/IEC 15802-3 Table 7-3"
    ::= { dot1dPriority 4 }

dot1dPortOutboundAccessPriorityEntry OBJECT-TYPE
    SYNTAX      Dot1dPortOutboundAccessPriorityEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Regenerated User Priority to Outbound Access Priority
        mapping."
    INDEX   { dot1dBasePort, dot1dRegenUserPriority }
    ::= { dot1dPortOutboundAccessPriorityTable 1 }

Dot1dPortOutboundAccessPriorityEntry ::=
    SEQUENCE {
        dot1dPortOutboundAccessPriority
            INTEGER
    }

dot1dPortOutboundAccessPriority OBJECT-TYPE
    SYNTAX      INTEGER (0..7)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The Outbound Access Priority the received frame is
        mapped to."
    ::= { dot1dPortOutboundAccessPriorityEntry 1 }

-- -------------------------------------------------------------
-- the dot1dGarp group
-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- The GARP Port Table
-- -------------------------------------------------------------

dot1dPortGarpTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1dPortGarpEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table of GARP control information about every bridge
        port.  This is indexed by dot1dBasePort."
    ::= { dot1dGarp 1 }

dot1dPortGarpEntry OBJECT-TYPE
    SYNTAX      Dot1dPortGarpEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "GARP control information for a bridge port."
    AUGMENTS { dot1dBasePortEntry }
    ::= { dot1dPortGarpTable 1 }

Dot1dPortGarpEntry ::=
    SEQUENCE {
        dot1dPortGarpJoinTime
            TimeInterval,
        dot1dPortGarpLeaveTime
            TimeInterval,
        dot1dPortGarpLeaveAllTime
            TimeInterval
    }

dot1dPortGarpJoinTime OBJECT-TYPE
    SYNTAX      TimeInterval
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The GARP Join time, in centiseconds."
    DEFVAL      { 20 }
    ::= { dot1dPortGarpEntry 1 }

dot1dPortGarpLeaveTime OBJECT-TYPE
    SYNTAX      TimeInterval
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The GARP Leave time, in centiseconds."
    DEFVAL      { 60 }
    ::= { dot1dPortGarpEntry 2 }

dot1dPortGarpLeaveAllTime OBJECT-TYPE
    SYNTAX      TimeInterval
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The GARP LeaveAll time, in centiseconds."
    DEFVAL      { 1000 }
    ::= { dot1dPortGarpEntry 3 }

-- -------------------------------------------------------------
-- The GMRP Port Configuration and Status Table
-- -------------------------------------------------------------

dot1dPortGmrpTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1dPortGmrpEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table of GMRP control and status information about
        every bridge port.  Augments the dot1dBasePortTable."
    ::= { dot1dGmrp 1 }

dot1dPortGmrpEntry OBJECT-TYPE
    SYNTAX      Dot1dPortGmrpEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "GMRP control and status information for a bridge port."
    AUGMENTS { dot1dBasePortEntry }
    ::= { dot1dPortGmrpTable 1 }

Dot1dPortGmrpEntry ::=
    SEQUENCE {
        dot1dPortGmrpStatus
            EnabledStatus,
        dot1dPortGmrpFailedRegistrations
            Counter32,
        dot1dPortGmrpLastPduOrigin
            MacAddress
    }

dot1dPortGmrpStatus OBJECT-TYPE
    SYNTAX      EnabledStatus
    MAX-ACCESS  read-write
    STATUS      current

    DESCRIPTION
        "The administrative state of GMRP operation on this port. The
        value enabled(1) indicates that GMRP is enabled on this port
        in all VLANs as long as dot1dGmrpStatus is also enabled(1).
        A value of disabled(2) indicates that GMRP is disabled on
        this port in all VLANs: any GMRP packets received will
        be silently discarded and no GMRP registrations will be
        propagated from other ports. Setting this to a value of
        enabled(1) will be stored by the agent but will only take
        effect on the GMRP protocol operation if dot1dGmrpStatus
        also indicates the value enabled(1).  This object affects
        all GMRP Applicant and Registrar state machines on this
        port.  A transition from disabled(2) to enabled(1) will
        cause a reset of all GMRP state machines on this port."
    DEFVAL      { enabled }
    ::= { dot1dPortGmrpEntry 1 }

dot1dPortGmrpFailedRegistrations OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of failed GMRP registrations, for any
        reason, in all VLANs, on this port."
    ::= { dot1dPortGmrpEntry 2 }

dot1dPortGmrpLastPduOrigin OBJECT-TYPE
    SYNTAX      MacAddress
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The Source MAC Address of the last GMRP message
        received on this port."
    ::= { dot1dPortGmrpEntry 3 }

-- -------------------------------------------------------------
--  High Capacity Port Table for Transparent Bridges
-- -------------------------------------------------------------

dot1dTpHCPortTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1dTpHCPortEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table that contains information about every high
        capacity port that is associated with this transparent
        bridge."
    ::= { dot1dTp 5 }

dot1dTpHCPortEntry OBJECT-TYPE
    SYNTAX      Dot1dTpHCPortEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Statistics information for each high capacity port of a
        transparent bridge."
    INDEX   { dot1dTpPort }
    ::= { dot1dTpHCPortTable 1 }

Dot1dTpHCPortEntry ::=
    SEQUENCE {
        dot1dTpHCPortInFrames
            Counter64,
        dot1dTpHCPortOutFrames
            Counter64,
        dot1dTpHCPortInDiscards
            Counter64
    }

dot1dTpHCPortInFrames OBJECT-TYPE
    SYNTAX      Counter64
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of frames that have been received by this
        port from its segment.  Note that a frame received on
        the interface corresponding to this port is only counted
        by this object if and only if it is for a protocol being
        processed by the local bridging function, including
        bridge management frames."
    REFERENCE
        "ISO/IEC 15802-3 Section 14.6.1.1.3"
    ::= { dot1dTpHCPortEntry 1 }

dot1dTpHCPortOutFrames OBJECT-TYPE
    SYNTAX      Counter64
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of frames that have been transmitted by this
        port to its segment.  Note that a frame transmitted on
        the interface corresponding to this port is only counted
        by this object if and only if it is for a protocol being
        processed by the local bridging function, including
        bridge management frames."

    REFERENCE
        "ISO/IEC 15802-3 Section 14.6.1.1.3"
    ::= { dot1dTpHCPortEntry 2 }

dot1dTpHCPortInDiscards OBJECT-TYPE
    SYNTAX      Counter64
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "Count of valid frames that have been received by this
        port from its segment which were discarded (i.e.,
        filtered) by the Forwarding Process."
    REFERENCE
        "ISO/IEC 15802-3 Section 14.6.1.1.3"
    ::= { dot1dTpHCPortEntry 3 }

-- ----------------------------------------------------
--  Upper part of High Capacity Port Table for Transparent Bridges
-- ----------------------------------------------------

dot1dTpPortOverflowTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1dTpPortOverflowEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table that contains the most-significant bits of
        statistics counters for ports that are associated with this
        transparent bridge that are on high capacity interfaces, as
        defined in the conformance clauses for this table. This table
        is provided as a way to read 64-bit counters for agents which
        support only SNMPv1.

        Note that the reporting of most-significant and
        least-significant counter bits separately runs the risk of
        missing an overflow of the lower bits in the interval between
        sampling. The manager must be aware of this possibility, even
        within the same varbindlist, when interpreting the results of
        a request or asynchronous notification."
    ::= { dot1dTp 6 }

dot1dTpPortOverflowEntry OBJECT-TYPE
    SYNTAX      Dot1dTpPortOverflowEntry
    MAX-ACCESS  not-accessible

    STATUS      current
    DESCRIPTION
        "The most significant bits of statistics counters for a high
        capacity interface of a transparent bridge. Each object is
        associated with a corresponding object in dot1dTpPortTable
        which indicates the least significant bits of the counter."
    INDEX   { dot1dTpPort }
    ::= { dot1dTpPortOverflowTable 1 }

Dot1dTpPortOverflowEntry ::=
    SEQUENCE {
        dot1dTpPortInOverflowFrames
            Counter32,
        dot1dTpPortOutOverflowFrames
            Counter32,
        dot1dTpPortInOverflowDiscards
            Counter32
    }

dot1dTpPortInOverflowFrames OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of times the associated dot1dTpPortInFrames
        counter has overflowed."
    REFERENCE
        "ISO/IEC 15802-3 Section 14.6.1.1.3"
    ::= { dot1dTpPortOverflowEntry 1 }

dot1dTpPortOutOverflowFrames OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of times the associated dot1dTpPortOutFrames
        counter has overflowed."
    REFERENCE
        "ISO/IEC 15802-3 Section 14.6.1.1.3"
    ::= { dot1dTpPortOverflowEntry 2 }

dot1dTpPortInOverflowDiscards OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current

    DESCRIPTION
        "The number of times the associated
        dot1dTpPortInDiscards counter has overflowed."
    REFERENCE
        "ISO/IEC 15802-3 Section 14.6.1.1.3"
    ::= { dot1dTpPortOverflowEntry 3 }

-- -------------------------------------------------------------
-- IEEE 802.1p MIB - Conformance Information
-- -------------------------------------------------------------

pBridgeConformance OBJECT IDENTIFIER ::= { pBridgeMIB 2 }

pBridgeGroups OBJECT IDENTIFIER ::= { pBridgeConformance 1 }

pBridgeCompliances OBJECT IDENTIFIER
    ::= { pBridgeConformance 2 }

-- -------------------------------------------------------------
-- units of conformance
-- -------------------------------------------------------------

pBridgeExtCapGroup OBJECT-GROUP
    OBJECTS {
        dot1dDeviceCapabilities,
        dot1dPortCapabilities
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects indicating the optional
        capabilites of the device."
    ::= { pBridgeGroups 1 }

pBridgeDeviceGmrpGroup OBJECT-GROUP
    OBJECTS {
        dot1dGmrpStatus
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing device-level control
        for the Multicast Filtering extended bridge services."
    ::= { pBridgeGroups 2 }

pBridgeDevicePriorityGroup OBJECT-GROUP
    OBJECTS {
        dot1dTrafficClassesEnabled
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing device-level control
        for the Priority services."
    ::= { pBridgeGroups 3 }

pBridgeDefaultPriorityGroup OBJECT-GROUP
    OBJECTS {
        dot1dPortDefaultUserPriority
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects defining the User Priority
        applicable to each port for media which do not support
        native User Priority."
    ::= { pBridgeGroups 4 }

pBridgeRegenPriorityGroup OBJECT-GROUP
    OBJECTS {
        dot1dRegenUserPriority
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects defining the User Priorities
        applicable to each port for media which support native
        User Priority."
    ::= { pBridgeGroups 5 }

pBridgePriorityGroup OBJECT-GROUP
    OBJECTS {
        dot1dPortNumTrafficClasses,
        dot1dTrafficClass
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects defining the traffic classes
        within a bridge for each evaluated User Priority."
    ::= { pBridgeGroups 6 }

pBridgeAccessPriorityGroup OBJECT-GROUP
    OBJECTS {
        dot1dPortOutboundAccessPriority
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects defining the media dependent
        outbound access level for each priority."
    ::= { pBridgeGroups 7 }

pBridgePortGarpGroup OBJECT-GROUP
    OBJECTS {
        dot1dPortGarpJoinTime,
        dot1dPortGarpLeaveTime,
        dot1dPortGarpLeaveAllTime
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing port level control
        and status information for GARP operation."
    ::= { pBridgeGroups 8 }

pBridgePortGmrpGroup OBJECT-GROUP
    OBJECTS {
        dot1dPortGmrpStatus,
        dot1dPortGmrpFailedRegistrations,
        dot1dPortGmrpLastPduOrigin
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing port level control
        and status information for GMRP operation."
    ::= { pBridgeGroups 9 }

pBridgeHCPortGroup OBJECT-GROUP
    OBJECTS {
        dot1dTpHCPortInFrames,
        dot1dTpHCPortOutFrames,
        dot1dTpHCPortInDiscards
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing 64-bit statistics
         counters for high capacity bridge ports."
    ::= { pBridgeGroups 10 }

pBridgePortOverflowGroup OBJECT-GROUP
    OBJECTS {
        dot1dTpPortInOverflowFrames,
        dot1dTpPortOutOverflowFrames,
        dot1dTpPortInOverflowDiscards
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing overflow statistics
        counters for high capacity bridge ports."
    ::= { pBridgeGroups 11 }

-- -------------------------------------------------------------
-- compliance statements
-- -------------------------------------------------------------

pBridgeCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
        "The compliance statement for device support of Priority
        and Multicast Filtering extended bridging services."

    MODULE
        MANDATORY-GROUPS { pBridgeExtCapGroup }

        GROUP       pBridgeDeviceGmrpGroup
        DESCRIPTION
            "This group is mandatory for devices supporting the GMRP
            application, defined by IEEE 802.1D Extended Filtering
            Services."

        GROUP       pBridgeDevicePriorityGroup
        DESCRIPTION
            "This group is mandatory only for devices supporting
            the priority forwarding operations defined by IEEE
            802.1D."

        GROUP       pBridgeDefaultPriorityGroup
        DESCRIPTION
            "This group is mandatory only for devices supporting
            the priority forwarding operations defined by the
            extended bridge services with media types, such as
            Ethernet, that do not support native User Priority."

        GROUP       pBridgeRegenPriorityGroup
        DESCRIPTION
            "This group is mandatory only for devices supporting
            the priority forwarding operations defined by IEEE 802.1D
            and which have interface media types that support
            native User Priority e.g. IEEE 802.5."

        GROUP       pBridgePriorityGroup
        DESCRIPTION
            "This group is mandatory only for devices supporting
            the priority forwarding operations defined by IEEE 802.1D."

        GROUP       pBridgeAccessPriorityGroup
        DESCRIPTION
            "This group is optional and is relevant only for devices
            supporting the priority forwarding operations defined by
            IEEE 802.1D and which have interface media types that support
            native Access Priority e.g. IEEE 802.5."

        GROUP       pBridgePortGarpGroup
        DESCRIPTION
            "This group is mandatory for devices supporting any
            of the GARP applications: e.g. GMRP, defined by the
            extended filtering services of 802.1D; or GVRP,
            defined by 802.1Q (refer to the Q-BRIDGE-MIB for
            conformance statements for GVRP)."

        GROUP       pBridgePortGmrpGroup
        DESCRIPTION
            "This group is mandatory for devices supporting the
            GMRP application, as defined by IEEE 802.1D Extended
            Filtering Services."

        GROUP       pBridgeHCPortGroup
        DESCRIPTION
            "Support for this group in a device is mandatory for those
            bridge ports which map to network interfaces that have the
            value of the corresponding instance of ifSpeed
            greater than 650,000,000 bits/second."

        GROUP       pBridgePortOverflowGroup
        DESCRIPTION
            "Support for this group in a device is mandatory for those
            bridge ports which map to network interfaces that have the
            value of the corresponding instance of ifSpeed
            greater than 650,000,000 bits/second."

        OBJECT      dot1dPortNumTrafficClasses
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required."

        OBJECT      dot1dTrafficClass
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required."

        OBJECT      dot1dRegenUserPriority
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required."

       ::= { pBridgeCompliances 1 }

END

5.  Definitions for Virtual Bridge MIB

Q-BRIDGE-MIB DEFINITIONS ::= BEGIN

-- -------------------------------------------------------------
-- MIB for IEEE 802.1Q Devices
-- -------------------------------------------------------------

IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE,
    Counter32, Counter64, Unsigned32, TimeTicks
        FROM SNMPv2-SMI
    RowStatus, TruthValue, TEXTUAL-CONVENTION, MacAddress
        FROM SNMPv2-TC
    SnmpAdminString
        FROM SNMP-FRAMEWORK-MIB
    MODULE-COMPLIANCE, OBJECT-GROUP
        FROM SNMPv2-CONF
    dot1dBridge, dot1dBasePortEntry, dot1dBasePort
        FROM BRIDGE-MIB
    EnabledStatus
        FROM P-BRIDGE-MIB
    TimeFilter
        FROM RMON2-MIB;

qBridgeMIB MODULE-IDENTITY
    LAST-UPDATED "9908250000Z"
    ORGANIZATION "IETF Bridge MIB Working Group"

    CONTACT-INFO
        "       Les Bell
        Postal: 3Com Europe Ltd.
                3Com Centre, Boundary Way
                Hemel Hempstead, Herts. HP2 7YU
                UK
         Phone: +44 1442 438025
         Email: Les_Bell@3Com.com

                Andrew Smith
        Postal: Extreme Networks
                3585 Monroe St.
                Santa Clara CA 95051
                USA
         Phone: +1 408 579 2821
         Email: andrew@extremenetworks.com

                Paul Langille
        Postal: Newbridge Networks
                5 Corporate Drive
                Andover, MA 01810
                USA
         Phone: +1 978 691 4665
         Email: langille@newbridge.com

                Anil Rijhsinghani
        Postal: Cabletron Systems
                50 Minuteman Road
                Andover, MA 01810
                USA
         Phone: +1 978 684 1295
         Email: anil@cabletron.com

                Keith McCloghrie
        Postal: cisco Systems, Inc.
                170 West Tasman Drive
                San Jose, CA 95134-1706
                USA
         Phone: +1 408 526 5260
         Email: kzm@cisco.com"
    DESCRIPTION
        "The VLAN Bridge MIB module for managing Virtual Bridged
        Local Area Networks, as defined by IEEE 802.1Q-1998."

-- revision history

    REVISION     "9908250000Z"
    DESCRIPTION
         "Initial version, published as RFC 2674."

    ::= { dot1dBridge 7 }

qBridgeMIBObjects OBJECT IDENTIFIER ::= { qBridgeMIB 1 }

-- -------------------------------------------------------------
-- Textual Conventions
-- -------------------------------------------------------------

PortList ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
        "Each octet within this value specifies a set of eight
        ports, with the first octet specifying ports 1 through
        8, the second octet specifying ports 9 through 16, etc.
        Within each octet, the most significant bit represents
        the lowest numbered port, and the least significant bit
        represents the highest numbered port.  Thus, each port
        of the bridge is represented by a single bit within the
        value of this object.  If that bit has a value of '1'
        then that port is included in the set of ports; the port
        is not included if its bit has a value of '0'."
    SYNTAX      OCTET STRING

VlanIndex ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
        "A value used to index per-VLAN tables: values of 0 and
        4095 are not permitted; if the value is between 1 and
        4094 inclusive, it represents an IEEE 802.1Q VLAN-ID with
        global scope within a given bridged domain (see VlanId
        textual convention).  If the value is greater than 4095
        then it represents a VLAN with scope local to the
        particular agent, i.e. one without a global VLAN-ID
        assigned to it. Such VLANs are outside the scope of
        IEEE 802.1Q but it is convenient to be able to manage them
        in the same way using this MIB."
    SYNTAX      Unsigned32

VlanId ::= TEXTUAL-CONVENTION
    STATUS      current
    DESCRIPTION
        "A 12-bit VLAN ID used in the VLAN Tag header."
    SYNTAX      INTEGER (1..4094)

-- -------------------------------------------------------------
-- groups in the Q-BRIDGE MIB
-- -------------------------------------------------------------

dot1qBase       OBJECT IDENTIFIER ::= { qBridgeMIBObjects 1 }
dot1qTp         OBJECT IDENTIFIER ::= { qBridgeMIBObjects 2 }
dot1qStatic     OBJECT IDENTIFIER ::= { qBridgeMIBObjects 3 }
dot1qVlan       OBJECT IDENTIFIER ::= { qBridgeMIBObjects 4 }

-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- dot1qBase group
-- -------------------------------------------------------------

dot1qVlanVersionNumber OBJECT-TYPE
    SYNTAX      INTEGER {
                    version1(1)
                }
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The version number of IEEE 802.1Q that this device
        supports."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.1.1"
    ::= { dot1qBase 1 }

dot1qMaxVlanId OBJECT-TYPE
    SYNTAX      VlanId
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The maximum IEEE 802.1Q VLAN ID that this device
        supports."
    REFERENCE
        "IEEE 802.1Q/D11 Section 9.3.2.3"
    ::= { dot1qBase 2 }

dot1qMaxSupportedVlans OBJECT-TYPE
    SYNTAX      Unsigned32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The maximum number of IEEE 802.1Q VLANs that this
        device supports."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.1.1"
    ::= { dot1qBase 3 }

dot1qNumVlans OBJECT-TYPE
    SYNTAX      Unsigned32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The current number of IEEE 802.1Q VLANs that are
        configured in this device."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.7.1.1"
    ::= { dot1qBase 4 }

dot1qGvrpStatus OBJECT-TYPE
    SYNTAX      EnabledStatus
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The administrative status requested by management for
        GVRP.  The value enabled(1) indicates that GVRP should
        be enabled on this device, on all ports for which it has
        not been specifically disabled.  When disabled(2), GVRP
        is disabled on all ports and all GVRP packets will be
        forwarded transparently.  This object affects all GVRP
        Applicant and Registrar state machines.  A transition
        from disabled(2) to enabled(1) will cause a reset of all
        GVRP state machines on all ports."
    DEFVAL      { enabled }
    ::= { dot1qBase 5 }

-- -------------------------------------------------------------
-- the dot1qTp group
-- -------------------------------------------------------------

-- -------------------------------------------------------------
-- the current Filtering Database Table
-- -------------------------------------------------------------

dot1qFdbTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qFdbEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table that contains configuration and control
        information for each Filtering Database currently
        operating on this device.  Entries in this table appear
        automatically when VLANs are assigned FDB IDs in the
        dot1qVlanCurrentTable."
    ::= { dot1qTp 1 }

dot1qFdbEntry OBJECT-TYPE
    SYNTAX      Dot1qFdbEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Information about a specific Filtering Database."
    INDEX   { dot1qFdbId }
    ::= { dot1qFdbTable 1 }

Dot1qFdbEntry ::=
    SEQUENCE {
        dot1qFdbId
            Unsigned32,
        dot1qFdbDynamicCount
            Counter32
    }

dot1qFdbId OBJECT-TYPE
    SYNTAX       Unsigned32
    MAX-ACCESS   not-accessible
    STATUS       current
    DESCRIPTION
        "The identity of this Filtering Database."
    ::= { dot1qFdbEntry 1 }

dot1qFdbDynamicCount OBJECT-TYPE
    SYNTAX       Counter32
    MAX-ACCESS   read-only
    STATUS       current
    DESCRIPTION
        "The current number of dynamic entries in this
        Filtering Database."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.7.1.1.3"
    ::= { dot1qFdbEntry 2 }

-- -------------------------------------------------------------
-- Multiple Forwarding Databases for 802.1Q Transparent devices
-- This table is an alternative to the dot1dTpFdbTable,
-- previously defined for 802.1D devices which only support a
-- single Forwarding Database.
-- -------------------------------------------------------------

dot1qTpFdbTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qTpFdbEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table that contains information about unicast entries
        for which the device has forwarding and/or filtering
        information.  This information is used by the
        transparent bridging function in determining how to
        propagate a received frame."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.7.7"
    ::= { dot1qTp 2 }

dot1qTpFdbEntry OBJECT-TYPE
    SYNTAX      Dot1qTpFdbEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Information about a specific unicast MAC address for
        which the device has some forwarding and/or filtering
        information."
    INDEX   { dot1qFdbId, dot1qTpFdbAddress }
    ::= { dot1qTpFdbTable 1 }

Dot1qTpFdbEntry ::=
    SEQUENCE {
        dot1qTpFdbAddress
            MacAddress,
        dot1qTpFdbPort
            INTEGER,
        dot1qTpFdbStatus
            INTEGER
    }

dot1qTpFdbAddress OBJECT-TYPE
    SYNTAX      MacAddress
    MAX-ACCESS  not-accessible
    STATUS      current

    DESCRIPTION
        "A unicast MAC address for which the device has
        forwarding and/or filtering information."
    ::= { dot1qTpFdbEntry 1 }

dot1qTpFdbPort OBJECT-TYPE
    SYNTAX      INTEGER (0..65535)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "Either the value '0', or the port number of the port on
        which a frame having a source address equal to the value
        of the corresponding instance of dot1qTpFdbAddress has
        been seen.  A value of '0' indicates that the port
        number has not been learned but that the device does
        have some forwarding/filtering information about this
        address (e.g. in the dot1qStaticUnicastTable).
        Implementors are encouraged to assign the port value to
        this object whenever it is learned even for addresses
        for which the corresponding value of dot1qTpFdbStatus is
        not learned(3)."
    ::= { dot1qTpFdbEntry 2 }

dot1qTpFdbStatus OBJECT-TYPE
    SYNTAX      INTEGER {
                    other(1),
                    invalid(2),
                    learned(3),
                    self(4),
                    mgmt(5)
                }
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The status of this entry.  The meanings of the values
        are:
            other(1) - none of the following.  This may include
                the case where some other MIB object (not the
                corresponding instance of dot1qTpFdbPort, nor an
                entry in the dot1qStaticUnicastTable) is being
                used to determine if and how frames addressed to
                the value of the corresponding instance of
                dot1qTpFdbAddress are being forwarded.
            invalid(2) - this entry is no longer valid (e.g., it
                was learned but has since aged out), but has not
                yet been flushed from the table.
            learned(3) - the value of the corresponding instance
                of dot1qTpFdbPort was learned and is being used.

            self(4) - the value of the corresponding instance of
                dot1qTpFdbAddress represents one of the device's
                addresses.  The corresponding instance of
                dot1qTpFdbPort indicates which of the device's
                ports has this address.
            mgmt(5) - the value of the corresponding instance of
                dot1qTpFdbAddress is also the value of an
                existing instance of dot1qStaticAddress."
    ::= { dot1qTpFdbEntry 3 }

-- -------------------------------------------------------------
-- Dynamic Group Registration Table
-- -------------------------------------------------------------

dot1qTpGroupTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qTpGroupEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing filtering information for VLANs
        configured into the bridge by (local or network)
        management, or learnt dynamically, specifying the set of
        ports to which frames received on a VLAN for this FDB
        and containing a specific Group destination address are
        allowed to be forwarded."
    ::= { dot1qTp 3 }

dot1qTpGroupEntry OBJECT-TYPE
    SYNTAX      Dot1qTpGroupEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Filtering information configured into the bridge by
        management, or learnt dynamically, specifying the set of
        ports to which frames received on a VLAN and containing
        a specific Group destination address, are allowed to be
        forwarded.  The subset of these ports learnt dynamically
        is also provided."
    INDEX   { dot1qVlanIndex, dot1qTpGroupAddress }
    ::= { dot1qTpGroupTable 1 }

Dot1qTpGroupEntry ::=
    SEQUENCE {
        dot1qTpGroupAddress
            MacAddress,
        dot1qTpGroupEgressPorts
            PortList,
        dot1qTpGroupLearnt

            PortList
    }

dot1qTpGroupAddress OBJECT-TYPE
    SYNTAX      MacAddress
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The destination Group MAC address in a frame to which
        this entry's filtering information applies."
    ::= { dot1qTpGroupEntry 1 }

dot1qTpGroupEgressPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The complete set of ports, in this VLAN, to which
        frames destined for this Group MAC address are currently
        being explicitly forwarded.  This does not include ports
        for which this address is only implicitly forwarded, in
        the dot1qForwardAllPorts list."
    ::= { dot1qTpGroupEntry 2 }

dot1qTpGroupLearnt OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The subset of ports in dot1qTpGroupEgressPorts which
        were learnt by GMRP or some other dynamic mechanism, in
        this Filtering database."
    ::= { dot1qTpGroupEntry 3 }

-- -------------------------------------------------------------
-- Service Requirements Group
-- -------------------------------------------------------------

dot1qForwardAllTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qForwardAllEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing forwarding information for each
        VLAN, specifying the set of ports to which forwarding of
        all multicasts applies, configured statically by
        management or dynamically by GMRP.  An entry appears in
        this table for all VLANs that are currently

        instantiated."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.7.2, 12.7.7"
    ::= { dot1qTp 4 }

dot1qForwardAllEntry OBJECT-TYPE
    SYNTAX      Dot1qForwardAllEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Forwarding information for a VLAN, specifying the set
        of ports to which all multicasts should be forwarded,
        configured statically by management or dynamically by
        GMRP."
    INDEX   { dot1qVlanIndex }
    ::= { dot1qForwardAllTable 1 }

Dot1qForwardAllEntry ::=
    SEQUENCE {
        dot1qForwardAllPorts
            PortList,
        dot1qForwardAllStaticPorts
            PortList,
        dot1qForwardAllForbiddenPorts
            PortList
    }

dot1qForwardAllPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The complete set of ports in this VLAN to which all
        multicast group-addressed frames are to be forwarded.
        This includes ports for which this need has been
        determined dynamically by GMRP, or configured statically
        by management."
    ::= { dot1qForwardAllEntry 1 }

dot1qForwardAllStaticPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-write
    STATUS      current

    DESCRIPTION
        "The set of ports configured by management in this VLAN
        to which all multicast group-addressed frames are to be
        forwarded.  Ports entered in this list will also appear
        in the complete set shown by dot1qForwardAllPorts.  This
        value will be restored after the device is reset.  This
        only applies to ports that are members of the VLAN,
        defined by dot1qVlanCurrentEgressPorts.  A port may not
        be added in this set if it is already a member of the
        set of ports in dot1qForwardAllForbiddenPorts.  The
        default value is a string of ones of appropriate length,
        to indicate standard non-EFS behaviour, i.e.  forward
        all multicasts to all ports."
    ::= { dot1qForwardAllEntry 2 }

dot1qForwardAllForbiddenPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The set of ports configured by management in this VLAN
        for which the Service Requirement attribute Forward All
        Multicast Groups may not be dynamically registered by
        GMRP.  This value will be restored after the device is
        reset.  A port may not be added in this set if it is
        already a member of the set of ports in
        dot1qForwardAllStaticPorts.  The default value is a
        string of zeros of appropriate length."
    ::= { dot1qForwardAllEntry 3 }

dot1qForwardUnregisteredTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qForwardUnregisteredEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing forwarding information for each
        VLAN, specifying the set of ports to which forwarding of
        multicast group-addressed frames for which there is no
        more specific forwarding information applies.  This is
        configured statically by management and determined
        dynamically by GMRP.  An entry appears in this table for
        all VLANs that are currently instantiated."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.7.2, 12.7.7"
    ::= { dot1qTp 5 }

dot1qForwardUnregisteredEntry OBJECT-TYPE
    SYNTAX      Dot1qForwardUnregisteredEntry

    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Forwarding information for a VLAN, specifying the set
        of ports to which all multicasts for which there is no
        more specific forwarding information shall be forwarded.
        This is configured statically by management or
        dynamically by GMRP."
    INDEX   { dot1qVlanIndex }
    ::= { dot1qForwardUnregisteredTable 1 }

Dot1qForwardUnregisteredEntry ::=
    SEQUENCE {
        dot1qForwardUnregisteredPorts
            PortList,
        dot1qForwardUnregisteredStaticPorts
            PortList,
        dot1qForwardUnregisteredForbiddenPorts
            PortList
    }

dot1qForwardUnregisteredPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The complete set of ports in this VLAN to which
        multicast group-addressed frames for which there is no
        more specific forwarding information will be forwarded.
        This includes ports for which this need has been
        determined dynamically by GMRP, or configured statically
        by management."
    ::= { dot1qForwardUnregisteredEntry 1 }

dot1qForwardUnregisteredStaticPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The set of ports configured by management, in this
        VLAN, to which multicast group-addressed frames for
        which there is no more specific forwarding information
        are to be forwarded.  Ports entered in this list will
        also appear in the complete set shown by
        dot1qForwardUnregisteredPorts.  This value will be
        restored after the device is reset.  A port may not be
        added in this set if it is already a member of the set
        of ports in dot1qForwardUnregisteredForbiddenPorts.  The

        default value is a string of zeros of appropriate
        length, although this has no effect with the default
        value of dot1qForwardAllStaticPorts."
    ::= { dot1qForwardUnregisteredEntry 2 }

dot1qForwardUnregisteredForbiddenPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The set of ports configured by management in this VLAN
        for which the Service Requirement attribute Forward
        Unregistered Multicast Groups may not be dynamically
        registered by GMRP.  This value will be restored after
        the device is reset.  A port may not be added in this
        set if it is already a member of the set of ports in
        dot1qForwardUnregisteredStaticPorts.  The default value
        is a string of zeros of appropriate length."
    ::= { dot1qForwardUnregisteredEntry 3 }

-- -------------------------------------------------------------
-- The Static (Destination-Address Filtering) Database
-- -------------------------------------------------------------

dot1qStaticUnicastTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qStaticUnicastEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing filtering information for Unicast
        MAC addresses for each Filtering Database, configured
        into the device by (local or network) management
        specifying the set of ports to which frames received
        from specific ports and containing specific unicast
        destination addresses are allowed to be forwarded.  A
        value of zero in this table as the port number from
        which frames with a specific destination address are
        received, is used to specify all ports for which there
        is no specific entry in this table for that particular
        destination address.  Entries are valid for unicast
        addresses only."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.7.7,
        ISO/IEC 15802-3 Section 7.9.1"
    ::= { dot1qStatic 1 }

dot1qStaticUnicastEntry OBJECT-TYPE
    SYNTAX      Dot1qStaticUnicastEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Filtering information configured into the device by
        (local or network) management specifying the set of
        ports to which frames received from a specific port and
        containing a specific unicast destination address are
        allowed to be forwarded."
    INDEX   {
        dot1qFdbId,
        dot1qStaticUnicastAddress,
        dot1qStaticUnicastReceivePort
    }
    ::= { dot1qStaticUnicastTable 1 }

Dot1qStaticUnicastEntry ::=
    SEQUENCE {
        dot1qStaticUnicastAddress
            MacAddress,
        dot1qStaticUnicastReceivePort
            INTEGER,
        dot1qStaticUnicastAllowedToGoTo
            PortList,
        dot1qStaticUnicastStatus
            INTEGER
    }

dot1qStaticUnicastAddress OBJECT-TYPE
    SYNTAX      MacAddress
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The destination MAC address in a frame to which this
        entry's filtering information applies.  This object must
        take the value of a unicast address."
    ::= { dot1qStaticUnicastEntry 1 }

dot1qStaticUnicastReceivePort OBJECT-TYPE
    SYNTAX      INTEGER (0..65535)
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Either the value '0', or the port number of the port
        from which a frame must be received in order for this
        entry's filtering information to apply.  A value of zero
        indicates that this entry applies on all ports of the

        device for which there is no other applicable entry."
    ::= { dot1qStaticUnicastEntry 2 }

dot1qStaticUnicastAllowedToGoTo OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The set of ports for which a frame with a specific
        unicast address will be flooded in the event that it
        has not been learned.  It also specifies the set of
        ports a specific unicast address may be dynamically
        learnt on.  The dot1qTpFdbTable will have an equivalent
        entry with a dot1qTpFdbPort value of '0' until this
        address has been learnt, when it will be updated with
        the port the address has been seen on.  This only
        applies to ports that are members of the VLAN, defined
        by dot1qVlanCurrentEgressPorts.  The default value of
        this object is a string of ones of appropriate length."
    REFERENCE
        "IEEE 802.1Q/D11 Table 8-5, ISO/IEC 15802-3 Table 7-5"
    ::= { dot1qStaticUnicastEntry 3 }

dot1qStaticUnicastStatus OBJECT-TYPE
    SYNTAX      INTEGER {
                    other(1),
                    invalid(2),
                    permanent(3),
                    deleteOnReset(4),
                    deleteOnTimeout(5)
                }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "This object indicates the status of this entry.
            other(1) - this entry is currently in use but
                the conditions under which it will remain
                so differ from the following values.
            invalid(2) - writing this value to the object
                removes the corresponding entry.
            permanent(3) - this entry is currently in use
                and will remain so after the next reset of
                the bridge.
            deleteOnReset(4) - this entry is currently in
                use and will remain so until the next
                reset of the bridge.

            deleteOnTimeout(5) - this entry is currently in
                use and will remain so until it is aged out."
    DEFVAL      { permanent }
    ::= { dot1qStaticUnicastEntry 4 }

dot1qStaticMulticastTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qStaticMulticastEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing filtering information for Multicast
        and Broadcast MAC addresses for each VLAN, configured
        into the device by (local or network) management
        specifying the set of ports to which frames received
        from specific ports and containing specific Multicast
        and Broadcast destination addresses are allowed to be
        forwarded.  A value of zero in this table as the port
        number from which frames with a specific destination
        address are received, is used to specify all ports for
        which there is no specific entry in this table for that
        particular destination address.  Entries are valid for
        Multicast and Broadcast addresses only."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.7.7,
        ISO/IEC 15802-3 Section 7.9.1"
    ::= { dot1qStatic 2 }

dot1qStaticMulticastEntry OBJECT-TYPE
    SYNTAX      Dot1qStaticMulticastEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Filtering information configured into the device by
        (local or network) management specifying the set of
        ports to which frames received from this specific port
        for this VLAN and containing this Multicast or Broadcast
        destination address are allowed to be forwarded."
    INDEX   {
        dot1qVlanIndex,
        dot1qStaticMulticastAddress,
        dot1qStaticMulticastReceivePort
    }
    ::= { dot1qStaticMulticastTable 1 }

Dot1qStaticMulticastEntry ::=
    SEQUENCE {
        dot1qStaticMulticastAddress
            MacAddress,
        dot1qStaticMulticastReceivePort
            INTEGER,
        dot1qStaticMulticastStaticEgressPorts
            PortList,
        dot1qStaticMulticastForbiddenEgressPorts
            PortList,
        dot1qStaticMulticastStatus
            INTEGER
    }

dot1qStaticMulticastAddress OBJECT-TYPE
    SYNTAX      MacAddress
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The destination MAC address in a frame to which this
        entry's filtering information applies.  This object must
        take the value of a Multicast or Broadcast address."
    ::= { dot1qStaticMulticastEntry 1 }

dot1qStaticMulticastReceivePort OBJECT-TYPE
    SYNTAX      INTEGER (0..65535)
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Either the value '0', or the port number of the port
        from which a frame must be received in order for this
        entry's filtering information to apply.  A value of zero
        indicates that this entry applies on all ports of the
        device for which there is no other applicable entry."
    ::= { dot1qStaticMulticastEntry 2 }

dot1qStaticMulticastStaticEgressPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-write
    STATUS      current

    DESCRIPTION
        "The set of ports to which frames received from a
        specific port and destined for a specific Multicast or
        Broadcast MAC address must be forwarded, regardless of
        any dynamic information e.g. from GMRP.  A port may not
        be added in this set if it is already a member of the
        set of ports in dot1qStaticMulticastForbiddenEgressPorts.
        The default value of this object is a string of ones of
        appropriate length."
    ::= { dot1qStaticMulticastEntry 3 }

dot1qStaticMulticastForbiddenEgressPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The set of ports to which frames received from a
        specific port and destined for a specific Multicast or
        Broadcast MAC address must not be forwarded, regardless
        of any dynamic information e.g. from GMRP.  A port may
        not be added in this set if it is already a member of the
        set of ports in dot1qStaticMulticastStaticEgressPorts.
        The default value of this object is a string of zeros of
        appropriate length."
    ::= { dot1qStaticMulticastEntry 4 }

dot1qStaticMulticastStatus OBJECT-TYPE
    SYNTAX      INTEGER {
                    other(1),
                    invalid(2),
                    permanent(3),
                    deleteOnReset(4),
                    deleteOnTimeout(5)
                }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "This object indicates the status of this entry.
            other(1) - this entry is currently in use but
                the conditions under which it will remain
                so differ from the following values.
            invalid(2) - writing this value to the object
                removes the corresponding entry.
            permanent(3) - this entry is currently in use
                and will remain so after the next reset of
                the bridge.

            deleteOnReset(4) - this entry is currently in
                use and will remain so until the next
                reset of the bridge.
            deleteOnTimeout(5) - this entry is currently in
                use and will remain so until it is aged out."
    DEFVAL      { permanent }
    ::= { dot1qStaticMulticastEntry 5 }

-- -------------------------------------------------------------
-- The Current VLAN Database
-- -------------------------------------------------------------

dot1qVlanNumDeletes OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
        "The number of times a VLAN entry has been deleted from
        the dot1qVlanCurrentTable (for any reason).  If an entry
        is deleted, then inserted, and then deleted, this
        counter will be incremented by 2."
    ::= { dot1qVlan 1 }

dot1qVlanCurrentTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qVlanCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing current configuration information
        for each VLAN currently configured into the device by
        (local or network) management, or dynamically created
        as a result of GVRP requests received."
    ::= { dot1qVlan 2 }

dot1qVlanCurrentEntry OBJECT-TYPE
    SYNTAX      Dot1qVlanCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Information for a VLAN configured into the device by
        (local or network) management, or dynamically created
        as a result of GVRP requests received."
    INDEX   { dot1qVlanTimeMark, dot1qVlanIndex }
    ::= { dot1qVlanCurrentTable 1 }

Dot1qVlanCurrentEntry ::=
    SEQUENCE {
        dot1qVlanTimeMark
            TimeFilter,
        dot1qVlanIndex
            VlanIndex,
        dot1qVlanFdbId
            Unsigned32,
        dot1qVlanCurrentEgressPorts
            PortList,
        dot1qVlanCurrentUntaggedPorts
            PortList,
        dot1qVlanStatus
            INTEGER,
        dot1qVlanCreationTime
            TimeTicks
    }

dot1qVlanTimeMark OBJECT-TYPE
    SYNTAX      TimeFilter
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A TimeFilter for this entry.  See the TimeFilter
        textual convention to see how this works."
    ::= { dot1qVlanCurrentEntry 1 }

dot1qVlanIndex OBJECT-TYPE
    SYNTAX      VlanIndex
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The VLAN-ID or other identifier refering to this VLAN."
    ::= { dot1qVlanCurrentEntry 2 }

dot1qVlanFdbId OBJECT-TYPE
    SYNTAX      Unsigned32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The Filtering Database used by this VLAN.  This is one
        of the dot1qFdbId values in the dot1qFdbTable.  This
        value is allocated automatically by the device whenever
        the VLAN is created: either dynamically by GVRP, or by

        management, in dot1qVlanStaticTable.  Allocation of this
        value follows the learning constraints defined for this
        VLAN in dot1qLearningConstraintsTable."
    ::= { dot1qVlanCurrentEntry 3 }

dot1qVlanCurrentEgressPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The set of ports which are transmitting traffic for
        this VLAN as either tagged or untagged frames."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.2.1"
    ::= { dot1qVlanCurrentEntry 4 }

dot1qVlanCurrentUntaggedPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The set of ports which are transmitting traffic for
        this VLAN as untagged frames."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.2.1"
    ::= { dot1qVlanCurrentEntry 5 }

dot1qVlanStatus OBJECT-TYPE
    SYNTAX      INTEGER {
                    other(1),
                    permanent(2),
                    dynamicGvrp(3)
                }
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "This object indicates the status of this entry.
            other(1) - this entry is currently in use but the
                conditions under which it will remain so differ
                from the following values.
            permanent(2) - this entry, corresponding to an entry
                in dot1qVlanStaticTable, is currently in use and
                will remain so after the next reset of the
                device.  The port lists for this entry include
                ports from the equivalent dot1qVlanStaticTable
                entry and ports learnt dynamically.
            dynamicGvrp(3) - this entry is currently in use

                and will remain so until removed by GVRP.  There
                is no static entry for this VLAN and it will be
                removed when the last port leaves the VLAN."
    ::= { dot1qVlanCurrentEntry 6 }

dot1qVlanCreationTime OBJECT-TYPE
    SYNTAX      TimeTicks
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The value of sysUpTime when this VLAN was created."
    ::= { dot1qVlanCurrentEntry 7 }

-- -------------------------------------------------------------
-- The Static VLAN Database
-- -------------------------------------------------------------

dot1qVlanStaticTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qVlanStaticEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing static configuration information for
        each VLAN configured into the device by (local or
        network) management.  All entries are permanent and will
        be restored after the device is reset."
    ::= { dot1qVlan 3 }

dot1qVlanStaticEntry OBJECT-TYPE
    SYNTAX      Dot1qVlanStaticEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Static information for a VLAN configured into the
        device by (local or network) management."
    INDEX   { dot1qVlanIndex }
    ::= { dot1qVlanStaticTable 1 }

Dot1qVlanStaticEntry ::=
    SEQUENCE {
        dot1qVlanStaticName
            SnmpAdminString,
        dot1qVlanStaticEgressPorts
            PortList,
        dot1qVlanForbiddenEgressPorts
            PortList,

        dot1qVlanStaticUntaggedPorts
            PortList,
        dot1qVlanStaticRowStatus
            RowStatus
    }

dot1qVlanStaticName OBJECT-TYPE
    SYNTAX      SnmpAdminString (SIZE (0..32))
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
        "An administratively assigned string, which may be used
        to identify the VLAN."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.2.1"
    ::= { dot1qVlanStaticEntry 1 }

dot1qVlanStaticEgressPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
        "The set of ports which are permanently assigned to the
        egress list for this VLAN by management.  Changes to a
        bit in this object affect the per-port per-VLAN
        Registrar control for Registration Fixed for the
        relevant GVRP state machine on each port.  A port may
        not be added in this set if it is already a member of
        the set of ports in dot1qVlanForbiddenEgressPorts.  The
        default value of this object is a string of zeros of
        appropriate length, indicating not fixed."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.7.7.3, 11.2.3.2.3"
    ::= { dot1qVlanStaticEntry 2 }

dot1qVlanForbiddenEgressPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
        "The set of ports which are prohibited by management
        from being included in the egress list for this VLAN.
        Changes to this object that cause a port to be included
        or excluded affect the per-port per-VLAN Registrar

        control for Registration Forbidden for the relevant GVRP
        state machine on each port.  A port may not be added in
        this set if it is already a member of the set of ports
        in dot1qVlanStaticEgressPorts.  The default value of
        this object is a string of zeros of appropriate length,
        excluding all ports from the forbidden set."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.7.7.3, 11.2.3.2.3"
    ::= { dot1qVlanStaticEntry 3 }

dot1qVlanStaticUntaggedPorts OBJECT-TYPE
    SYNTAX      PortList
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
        "The set of ports which should transmit egress packets
        for this VLAN as untagged.  The default value of this
        object for the default VLAN (dot1qVlanIndex = 1) is a string
        of appropriate length including all ports.  There is no
        specified default for other VLANs.  If a device agent cannot
        support the set of ports being set then it will reject the
        set operation with an error. An example might be if a
        manager attempts to set more than one VLAN to be untagged
        on egress where the device does not support this IEEE 802.1Q
        option."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.2.1"
    ::= { dot1qVlanStaticEntry 4 }

dot1qVlanStaticRowStatus OBJECT-TYPE
    SYNTAX      RowStatus
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
        "This object indicates the status of this entry."
    ::= { dot1qVlanStaticEntry 5 }

dot1qNextFreeLocalVlanIndex OBJECT-TYPE
    SYNTAX      INTEGER (0|4096..2147483647)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The next available value for dot1qVlanIndex of a local
        VLAN entry in dot1qVlanStaticTable.  This will report
        values >=4096 if a new Local VLAN may be created or else
        the value 0 if this is not possible.

        A row creation operation in this table for an entry with a local
        VlanIndex value may fail if the current value of this object
        is not used as the index. Even if the value read is used,
        there is no guarantee that it will still be the valid index
        when the create operation is attempted - another manager may
        have already got in during the intervening time interval.
        In this case, dot1qNextFreeLocalVlanIndex should be re-read
        and the creation re-tried with the new value.

        This value will automatically change when the current value is
        used to create a new row."
    ::= { dot1qVlan 4 }

-- -------------------------------------------------------------
-- The VLAN Port Configuration Table
-- -------------------------------------------------------------

dot1qPortVlanTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qPortVlanEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing per port control and status
        information for VLAN configuration in the device."
    ::= { dot1qVlan 5 }

dot1qPortVlanEntry OBJECT-TYPE
    SYNTAX      Dot1qPortVlanEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Information controlling VLAN configuration for a port
        on the device.  This is indexed by dot1dBasePort."
    AUGMENTS { dot1dBasePortEntry }
    ::= { dot1qPortVlanTable 1 }

Dot1qPortVlanEntry ::=
    SEQUENCE {
        dot1qPvid
            VlanIndex,
        dot1qPortAcceptableFrameTypes
            INTEGER,
        dot1qPortIngressFiltering
            TruthValue,
        dot1qPortGvrpStatus
            EnabledStatus,

        dot1qPortGvrpFailedRegistrations
            Counter32,
        dot1qPortGvrpLastPduOrigin
            MacAddress
    }

dot1qPvid OBJECT-TYPE
    SYNTAX      VlanIndex
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The PVID, the VLAN ID assigned to untagged frames or
        Priority-Tagged frames received on this port."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.1.1"
    DEFVAL      { 1 }
    ::= { dot1qPortVlanEntry 1 }

dot1qPortAcceptableFrameTypes OBJECT-TYPE
    SYNTAX      INTEGER {
                    admitAll(1),
                    admitOnlyVlanTagged(2)
                }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "When this is admitOnlyVlanTagged(2) the device will
        discard untagged frames or Priority-Tagged frames
        received on this port.  When admitAll(1), untagged
        frames or Priority-Tagged frames received on this port
        will be accepted and assigned to the PVID for this port.

        This control does not affect VLAN independent BPDU
        frames, such as GVRP and STP.  It does affect VLAN
        dependent BPDU frames, such as GMRP."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.1.3"
    DEFVAL      { admitAll }
    ::= { dot1qPortVlanEntry 2 }

dot1qPortIngressFiltering OBJECT-TYPE
    SYNTAX      TruthValue
    MAX-ACCESS  read-write
    STATUS      current

    DESCRIPTION
        "When this is true(1) the device will discard incoming
        frames for VLANs which do not include this Port in its
        Member set.  When false(2), the port will accept all
        incoming frames.

        This control does not affect VLAN independent BPDU
        frames, such as GVRP and STP.  It does affect VLAN
        dependent BPDU frames, such as GMRP."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.1.4"
    DEFVAL      { false }
    ::= { dot1qPortVlanEntry 3 }

dot1qPortGvrpStatus OBJECT-TYPE
    SYNTAX      EnabledStatus
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The state of GVRP operation on this port.  The value
        enabled(1) indicates that GVRP is enabled on this port,
        as long as dot1qGvrpStatus is also enabled for this
        device.  When disabled(2) but dot1qGvrpStatus is still
        enabled for the device, GVRP is disabled on this port:
        any GVRP packets received will be silently discarded and
        no GVRP registrations will be propagated from other
        ports.  This object affects all GVRP Applicant and
        Registrar state machines on this port.  A transition
        from disabled(2) to enabled(1) will cause a reset of all
        GVRP state machines on this port."
    DEFVAL      { enabled }
    ::= { dot1qPortVlanEntry 4 }

dot1qPortGvrpFailedRegistrations OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The total number of failed GVRP registrations, for any
        reason, on this port."
    ::= { dot1qPortVlanEntry 5 }

dot1qPortGvrpLastPduOrigin OBJECT-TYPE
    SYNTAX      MacAddress
    MAX-ACCESS  read-only
    STATUS      current

    DESCRIPTION
        "The Source MAC Address of the last GVRP message
        received on this port."
    ::= { dot1qPortVlanEntry 6 }

-- -------------------------------------------------------------
-- Per port VLAN Statistics Table
-- -------------------------------------------------------------

dot1qPortVlanStatisticsTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qPortVlanStatisticsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing per-port, per-VLAN statistics for
        traffic received. Separate objects are provided for both the
        most-significant and least-significant bits of statistics
        counters for ports that are associated with this transparent
        bridge. The most-significant bit objects are only required on
        high capacity interfaces, as defined in the conformance clauses
        for these objects. This mechanism is provided as a way to read
        64-bit counters for agents which support only SNMPv1.

        Note that the reporting of most-significant and least-
        significant counter bits separately runs the risk of missing
        an overflow of the lower bits in the interval between sampling.
        The manager must be aware of this possibility, even within the
        same varbindlist, when interpreting the results of a request or
        asynchronous notification."
    ::= { dot1qVlan 6 }

dot1qPortVlanStatisticsEntry OBJECT-TYPE
    SYNTAX      Dot1qPortVlanStatisticsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Traffic statistics for a VLAN on an interface."
    INDEX   { dot1dBasePort, dot1qVlanIndex }
    ::= { dot1qPortVlanStatisticsTable 1 }

Dot1qPortVlanStatisticsEntry ::=
    SEQUENCE {

        dot1qTpVlanPortInFrames
            Counter32,
        dot1qTpVlanPortOutFrames
            Counter32,
        dot1qTpVlanPortInDiscards
            Counter32,
        dot1qTpVlanPortInOverflowFrames
            Counter32,
        dot1qTpVlanPortOutOverflowFrames
            Counter32,
        dot1qTpVlanPortInOverflowDiscards
            Counter32
    }

dot1qTpVlanPortInFrames OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of valid frames received by this port from
        its segment which were classified as belonging to this
        VLAN.  Note that a frame received on this port is
        counted by this object if and only if it is for a
        protocol being processed by the local forwarding process
        for this VLAN.  This object includes received bridge
        management frames classified as belonging to this VLAN
        (e.g. GMRP, but not GVRP or STP)."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.6.1.1.3(a)"
    ::= { dot1qPortVlanStatisticsEntry 1 }

dot1qTpVlanPortOutFrames OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of valid frames transmitted by this port to
        its segment from the local forwarding process for this
        VLAN.  This includes bridge management frames originated
        by this device which are classified as belonging to this
        VLAN (e.g. GMRP, but not GVRP or STP)."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.6.1.1.3(d)"
    ::= { dot1qPortVlanStatisticsEntry 2 }

dot1qTpVlanPortInDiscards OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of valid frames received by this port from
        its segment which were classified as belonging to this
        VLAN which were discarded due to VLAN related reasons.
        Specifically, the IEEE 802.1Q counters for Discard
        Inbound and Discard on Ingress Filtering."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.6.1.1.3"
    ::= { dot1qPortVlanStatisticsEntry 3 }

dot1qTpVlanPortInOverflowFrames OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of times the associated
        dot1qTpVlanPortInFrames counter has overflowed."
    REFERENCE
        "ISO/IEC 15802-3 Section 14.6.1.1.3"
    ::= { dot1qPortVlanStatisticsEntry 4 }

dot1qTpVlanPortOutOverflowFrames OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of times the associated
        dot1qTpVlanPortOutFrames counter has overflowed."
    REFERENCE
        "ISO/IEC 15802-3 Section 14.6.1.1.3"
    ::= { dot1qPortVlanStatisticsEntry 5 }

dot1qTpVlanPortInOverflowDiscards OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of times the associated
        dot1qTpVlanPortInDiscards counter has overflowed."
    REFERENCE
        "ISO/IEC 15802-3 Section 14.6.1.1.3"
    ::= { dot1qPortVlanStatisticsEntry 6 }

dot1qPortVlanHCStatisticsTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qPortVlanHCStatisticsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing per port, per VLAN statistics for
        traffic on high capacity interfaces."
    ::= { dot1qVlan 7 }

dot1qPortVlanHCStatisticsEntry OBJECT-TYPE
    SYNTAX      Dot1qPortVlanHCStatisticsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "Traffic statistics for a VLAN on a high capacity
        interface."
    INDEX   { dot1dBasePort, dot1qVlanIndex }
    ::= { dot1qPortVlanHCStatisticsTable 1 }

Dot1qPortVlanHCStatisticsEntry ::=
    SEQUENCE {
        dot1qTpVlanPortHCInFrames
            Counter64,
        dot1qTpVlanPortHCOutFrames
            Counter64,
        dot1qTpVlanPortHCInDiscards
            Counter64
    }

dot1qTpVlanPortHCInFrames OBJECT-TYPE
    SYNTAX      Counter64
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of valid frames received by this port from
        its segment which were classified as belonging to this
        VLAN.  Note that a frame received on this port is
        counted by this object if and only if it is for a
        protocol being processed by the local forwarding process
        for this VLAN.  This object includes received bridge
        management frames classified as belonging to this VLAN
        (e.g. GMRP, but not GVRP or STP)."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.6.1.1.3(a)"
    ::= { dot1qPortVlanHCStatisticsEntry 1 }

dot1qTpVlanPortHCOutFrames OBJECT-TYPE
    SYNTAX      Counter64
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of valid frames transmitted by this port to
        its segment from the local forwarding process for this
        VLAN.  This includes bridge management frames originated
        by this device which are classified as belonging to this
        VLAN (e.g. GMRP, but not GVRP or STP)."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.6.1.1.3(d)"
    ::= { dot1qPortVlanHCStatisticsEntry 2 }

dot1qTpVlanPortHCInDiscards OBJECT-TYPE
    SYNTAX      Counter64
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
        "The number of valid frames received by this port from
        its segment which were classified as belonging to this
        VLAN which were discarded due to VLAN related reasons.
        Specifically, the IEEE 802.1Q counters for Discard
        Inbound and Discard on Ingress Filtering."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.6.1.1.3"
    ::= { dot1qPortVlanHCStatisticsEntry 3 }

-- -------------------------------------------------------------
-- The VLAN Learning Constraints Table
-- -------------------------------------------------------------

dot1qLearningConstraintsTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF Dot1qLearningConstraintsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "A table containing learning constraints for sets of
        Shared and Independendent VLANs."
    REFERENCE
        "IEEE 802.1Q/D11 Section 12.10.3.1"
    ::= { dot1qVlan 8 }

dot1qLearningConstraintsEntry OBJECT-TYPE
    SYNTAX      Dot1qLearningConstraintsEntry
    MAX-ACCESS  not-accessible
    STATUS      current

    DESCRIPTION
        "A learning constraint defined for a VLAN."
    INDEX   { dot1qConstraintVlan, dot1qConstraintSet }
    ::= { dot1qLearningConstraintsTable 1 }

Dot1qLearningConstraintsEntry ::=
    SEQUENCE {
        dot1qConstraintVlan
            VlanIndex,
        dot1qConstraintSet
            INTEGER,
        dot1qConstraintType
            INTEGER,
        dot1qConstraintStatus
            RowStatus
    }

dot1qConstraintVlan OBJECT-TYPE
    SYNTAX      VlanIndex
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The index of the row in dot1qVlanCurrentTable for the
        VLAN constrained by this entry."
    ::= { dot1qLearningConstraintsEntry 1 }

dot1qConstraintSet OBJECT-TYPE
    SYNTAX      INTEGER (0..65535)
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
        "The identity of the constraint set to which
        dot1qConstraintVlan belongs.  These values may be chosen
        by the management station."
    ::= { dot1qLearningConstraintsEntry 2 }

dot1qConstraintType OBJECT-TYPE
    SYNTAX      INTEGER {
                    independent(1),
                    shared(2)
                }
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
        "The type of constraint this entry defines.
            independent(1) - the VLAN, dot1qConstraintVlan,
                uses an independent filtering database from all

                other VLANs in the same set, defined by
                dot1qConstraintSet.
            shared(2) - the VLAN, dot1qConstraintVlan, shares
                the same filtering database as all other VLANs
                in the same set, defined by dot1qConstraintSet."
    ::= { dot1qLearningConstraintsEntry 3 }

dot1qConstraintStatus OBJECT-TYPE
    SYNTAX      RowStatus
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
        "The status of this entry."
    ::= { dot1qLearningConstraintsEntry 4 }

dot1qConstraintSetDefault OBJECT-TYPE
    SYNTAX      INTEGER (0..65535)
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The identity of the constraint set to which a VLAN
        belongs, if there is not an explicit entry for that VLAN
        in dot1qLearningConstraintsTable."
    ::= { dot1qVlan 9 }

dot1qConstraintTypeDefault OBJECT-TYPE
    SYNTAX      INTEGER {
                    independent(1),
                    shared(2)
                }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
        "The type of constraint set to which a VLAN belongs, if
        there is not an explicit entry for that VLAN in
        dot1qLearningConstraintsTable.  The types are as defined
        for dot1qConstraintType."
    ::= { dot1qVlan 10 }

-- -------------------------------------------------------------
-- IEEE 802.1Q MIB - Conformance Information
-- -------------------------------------------------------------

qBridgeConformance OBJECT IDENTIFIER ::= { qBridgeMIB 2 }

qBridgeGroups OBJECT IDENTIFIER ::= { qBridgeConformance 1 }

qBridgeCompliances OBJECT IDENTIFIER
    ::= { qBridgeConformance 2 }

-- -------------------------------------------------------------
-- units of conformance
-- -------------------------------------------------------------

qBridgeBaseGroup OBJECT-GROUP
    OBJECTS {
        dot1qVlanVersionNumber,
        dot1qMaxVlanId,
        dot1qMaxSupportedVlans,
        dot1qNumVlans,
        dot1qGvrpStatus
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing device level control
        and status information for the Virtual LAN bridge
        services."
    ::= { qBridgeGroups 1 }

qBridgeFdbUnicastGroup OBJECT-GROUP
    OBJECTS {
        dot1qFdbDynamicCount,
        dot1qTpFdbPort,
        dot1qTpFdbStatus
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing information about all
        unicast addresses, learnt dynamically or statically
        configured by management, in each Filtering Database."
    ::= { qBridgeGroups 2 }

qBridgeFdbMulticastGroup OBJECT-GROUP
    OBJECTS {
        dot1qTpGroupEgressPorts,
        dot1qTpGroupLearnt
    }

    STATUS      current
    DESCRIPTION
        "A collection of objects providing information about all
        multicast addresses, learnt dynamically or statically
        configured by management, in each Filtering Database."
    ::= { qBridgeGroups 3 }

qBridgeServiceRequirementsGroup OBJECT-GROUP
    OBJECTS {
        dot1qForwardAllPorts,
        dot1qForwardAllStaticPorts,
        dot1qForwardAllForbiddenPorts,
        dot1qForwardUnregisteredPorts,
        dot1qForwardUnregisteredStaticPorts,
        dot1qForwardUnregisteredForbiddenPorts
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing information about
        service requirements, learnt dynamically or statically
        configured by management, in each Filtering Database."
    ::= { qBridgeGroups 4 }

qBridgeFdbStaticGroup OBJECT-GROUP
    OBJECTS {
        dot1qStaticUnicastAllowedToGoTo,
        dot1qStaticUnicastStatus,
        dot1qStaticMulticastStaticEgressPorts,
        dot1qStaticMulticastForbiddenEgressPorts,
        dot1qStaticMulticastStatus
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing information about
        unicast and multicast addresses statically configured by
        management, in each Filtering Database or VLAN."
    ::= { qBridgeGroups 5 }

qBridgeVlanGroup OBJECT-GROUP
    OBJECTS {
        dot1qVlanNumDeletes,
        dot1qVlanFdbId,
        dot1qVlanCurrentEgressPorts,
        dot1qVlanCurrentUntaggedPorts,
        dot1qVlanStatus,
        dot1qVlanCreationTime
    }

    STATUS      current
    DESCRIPTION
        "A collection of objects providing information about
        all VLANs currently configured on this device."
    ::= { qBridgeGroups 6 }

qBridgeVlanStaticGroup OBJECT-GROUP
    OBJECTS {
        dot1qVlanStaticName,
        dot1qVlanStaticEgressPorts,
        dot1qVlanForbiddenEgressPorts,
        dot1qVlanStaticUntaggedPorts,
        dot1qVlanStaticRowStatus,
        dot1qNextFreeLocalVlanIndex
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing information about
        VLANs statically configured by management."
    ::= { qBridgeGroups 7 }

qBridgePortGroup OBJECT-GROUP
    OBJECTS {
        dot1qPvid,
        dot1qPortAcceptableFrameTypes,
        dot1qPortIngressFiltering,
        dot1qPortGvrpStatus,
        dot1qPortGvrpFailedRegistrations,
        dot1qPortGvrpLastPduOrigin
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing port level VLAN
        control and status information for all ports."
    ::= { qBridgeGroups 8 }

qBridgeVlanStatisticsGroup OBJECT-GROUP
    OBJECTS {
        dot1qTpVlanPortInFrames,
        dot1qTpVlanPortOutFrames,
        dot1qTpVlanPortInDiscards
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing per-port packet
        statistics for all VLANs currently configured on this
        device."
    ::= { qBridgeGroups 9 }

qBridgeVlanStatisticsOverflowGroup OBJECT-GROUP
    OBJECTS {
        dot1qTpVlanPortInOverflowFrames,
        dot1qTpVlanPortOutOverflowFrames,
        dot1qTpVlanPortInOverflowDiscards
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing overflow counters for
        per-port packet statistics for all VLANs currently configured
        on this device for high capacity interfaces, defined as those
        that have the value of the corresponding instance of
        ifSpeed greater than 650,000,000 bits/second."
    ::= { qBridgeGroups 10 }

qBridgeVlanHCStatisticsGroup OBJECT-GROUP
    OBJECTS {
        dot1qTpVlanPortHCInFrames,
        dot1qTpVlanPortHCOutFrames,
        dot1qTpVlanPortHCInDiscards
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects providing per-port packet
        statistics for all VLANs currently configured on this
        device for high capacity interfaces, defined as those
        that have the value of the corresponding instance of
        ifSpeed greater than 650,000,000 bits/second."
    ::= { qBridgeGroups 11 }

qBridgeLearningConstraintsGroup OBJECT-GROUP
    OBJECTS {
        dot1qConstraintType,
        dot1qConstraintStatus
    }
    STATUS      current
    DESCRIPTION
        "A collection of objects defining the Filtering Database
        constraints all VLANs have with each other."
    ::= { qBridgeGroups 12 }

qBridgeLearningConstraintDefaultGroup OBJECT-GROUP
    OBJECTS {
        dot1qConstraintSetDefault,
        dot1qConstraintTypeDefault
    }

    STATUS      current
    DESCRIPTION
        "A collection of objects defining the default Filtering
        Database constraints for VLANs which have no specific
        constraints defined."
    ::= { qBridgeGroups 13 }

-- -------------------------------------------------------------
-- compliance statements
-- -------------------------------------------------------------

qBridgeCompliance MODULE-COMPLIANCE
    STATUS  current
    DESCRIPTION
        "The compliance statement for device support of Virtual
        LAN Bridge services."

    MODULE
        MANDATORY-GROUPS {
            qBridgeBaseGroup,
            qBridgeVlanGroup,
            qBridgeVlanStaticGroup,
            qBridgePortGroup
        }

        GROUP       qBridgeFdbUnicastGroup
        DESCRIPTION
            "This group is mandatory for bridges that implement
            802.1Q transparent bridging."

        GROUP       qBridgeFdbMulticastGroup
        DESCRIPTION
            "This group is mandatory for bridges that implement
            802.1Q transparent bridging."

        GROUP       qBridgeServiceRequirementsGroup
        DESCRIPTION
            "This group is mandatory for bridges that implement
            extended filtering services.  All objects must be
            read-write if extended-filtering services are
            enabled."

        GROUP       qBridgeFdbStaticGroup
        DESCRIPTION
            "This group is optional."

        GROUP       qBridgeVlanStatisticsGroup
        DESCRIPTION
            "This group is optional as there may be significant
            implementation cost associated with its support."

        GROUP       qBridgeVlanStatisticsOverflowGroup
        DESCRIPTION
            "This group is optional as there may be significant
            implementation cost associated with its support. It is most
            relevant for high capacity interfaces where the SNMP agent
            supports only SNMPv1."

        GROUP       qBridgeVlanHCStatisticsGroup
        DESCRIPTION
            "This group is optional as there may be significant
            implementation cost associated with its support. It is most
            relevant for high capacity interfaces."

        GROUP       qBridgeLearningConstraintsGroup
        DESCRIPTION
            "This group is mandatory for devices implementing
             both Independent VLAN Learning (IVL) and Shared
             VLAN Learning (SVL) modes of operation of the
             filtering database, as defined by IEEE 802.1Q."

        GROUP       qBridgeLearningConstraintDefaultGroup
        DESCRIPTION
            "This group is mandatory for devices implementing
             both Independent VLAN Learning (IVL) and Shared
             VLAN Learning (SVL) modes of operation of the
             filtering database, as defined by IEEE 802.1Q."

        OBJECT      dot1qPortAcceptableFrameTypes
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required as this is an optional
            capability in IEEE 802.1Q."

        OBJECT      dot1qPortIngressFiltering
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required as this is an optional
            capability in IEEE 802.1Q."

        OBJECT      dot1qConstraintSetDefault
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required as this is an optional
            capability in IEEE 802.1Q."

        OBJECT      dot1qConstraintTypeDefault
        MIN-ACCESS  read-only
        DESCRIPTION
            "Write access is not required as this is an optional
            capability in IEEE 802.1Q."

       ::= { qBridgeCompliances 1 }

END

6.  Acknowledgments

   This document expands upon previous work which resulted in the
   original bridge MIB [BRIDGEMIB].

   Much of the groundwork for this document was performed by the IEEE
   802.1 working group during the definition of the IEEE 802.1D updates
   [802.1D] and IEEE 802.1Q [802.1Q].

   The authors wish to thank the members of the Bridge Working Group and
   David Harrington in particular for their many comments and
   suggestions which improved this effort.

7.  Security Considerations

   There are a number of management objects defined in this MIB that
   have a MAX-ACCESS clause of read-write and/or read-create.  Such
   objects may be considered sensitive or vulnerable in some network
   environments.  The support for SET operations in a non-secure
   environment without proper protection can have a negative effect on
   network operations.

   SNMPv1 by itself is not a secure environment.  Even if the network
   itself is secure (for example by using IPSec), even then, there is no
   control as to who on the secure network is allowed to access and
   GET/SET (read/change/create/delete) the objects in this MIB.

   It is recommended that the implementers consider the security
   features as provided by the SNMPv3 framework.  Specifically, the use
   of the User-based Security Model [USM] and the View-based Access
   Control Model [VACM] is recommended.

   It is then a customer/user responsibility to ensure that the SNMP
   entity giving access to an instance of this MIB, is properly
   configured to give access to the objects only to those principals
   (users) that have legitimate rights to indeed GET or SET
   (change/create/delete) them.

8. References

   [ARCH]
        Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for
        Describing SNMP Management Frameworks", RFC 2571, April 1999.

   [V1PROTO]
        Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
        Network Management Protocol", STD 15, RFC 1157, May 1990.

   [V1SMI]
        Rose, M. and K. McCloghrie, "Structure and Identification of
        Management Information for TCP/IP-based Internets", STD 16, RFC
        1155, May 1990.

   [V1CONCISE]
        Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16,
        RFC 1212, March 1991.

   [V1TRAPS]
        Rose, M., "A Convention for Defining Traps for use with the
        SNMP", RFC 1215, March 1991.

   [V2SMI]
        McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M.  and S. Waldbusser, "Structure of Management Information
        Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

   [V2TC]
        McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M.  and S. Waldbusser, "Textual Conventions for SMIv2", STD 58,
        RFC 2579, April 1999.

   [V2CONFORM]
        McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M.  and S. Waldbusser, "Conformance Statements for SMIv2", STD
        58, RFC 2580, April 1999.

   [V2COMMUNITY]
        Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
        "Introduction to Community-based SNMPv2", RFC 1901, January
        1996.

   [V2TRANS]
        Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Transport
        Mappings for Version 2 of the Simple Network Management Protocol
        (SNMPv2)", RFC 1906, January 1996.

   [V2PROTO]
        Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol
        Operations for Version 2 of the Simple Network Management
        Protocol (SNMPv2)", RFC 1905, January 1996.

   [V3INTRO]
        Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction
        to Version 3 of the Internet-standard Network Management
        Framework", RFC 2570, April 1999.

   [V3MPC]
        Case, J., Harrington D., Presuhn, R. and B. Wijnen, "Message
        Processing and Dispatching for the Simple Network Management
        Protocol (SNMP)", RFC 2572, April 1999.

   [V3USM]
        Blumenthal, U. and B. Wijnen, "The User-Based Security Model
        (USM) for Version 3 of the Simple Network Management Protocol
        (SNMPv3)", RFC 2574, April 1999.

   [V3APPS]
        Levi, D., Meyer, P. and B. Stewart, "SNMP Applications", RFC
        2573, April 1999.

   [V3VACM]
        Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access
        Control Model for the Simple Network Management Protocol
        (SNMP)", RFC 2575, April 1999.

   [ASN1]
        Information processing systems - Open Systems Interconnection -
        Specification of Abstract Syntax Notation One (ASN.1),
        International Organization for Standardization, International
        Standard 8824, December 1987.

   [ASN1BER]
        Information processing systems - Open Systems Interconnection -
        Specification of Basic Encoding Rules for Abstract Notation One
        (ASN.1), International Organization for Standardization,
        International Standard 8825, December 1987.

   [802.1D-ORIG]
        ISO/IEC 10038, ANSI/IEEE Std 802.1D-1993 "MAC Bridges".

   [802.1D]
        "Information technology - Telecommunications and information
        exchange between systems - Local and metropolitan area networks
        - Common specifications - Part 3: Media Access Control (MAC)
        Bridges:  Revision.  This is a revision of ISO/IEC 10038: 1993,
        802.1j-1992 and 802.6k-1992.  It incorporates P802.11c, P802.1p
        and P802.12e."  ISO/IEC 15802-3: 1998.

   [802.1Q]
        ANSI/IEEE Standard 802.1Q, "IEEE Standards for Local and
        Metropolitan Area Networks: Virtual Bridged Local Area
        Networks", 1998.

   [BRIDGEMIB]
        Decker, E., Langille, P., Rijsinghani, A. and K.  McCloghrie,
        "Definitions of Managed Objects for Bridges", RFC 1493, July
        1993.

   [INTERFACEMIB]
        McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB
        using SMIv2", RFC 2233, November 1997.

   [SRBRIDGEMIB]
        Decker, E., McCloghrie, K., Langille, P. and A. Rijsinghani,
        "Definitions of Managed Objects for Source Routing Bridges", RFC
        1525, September 1993.

   [MIB2]
        McCloghrie K. and M. Rose, Editors, "Management Information Base
        for Network Management of TCP/IP-based internets", STD 17, RFC
        1213, March 1991.

9.  Authors' Addresses

   Les Bell
   3Com Europe Limited
   3Com Centre, Boundary Way
   Hemel Hempstead
   Herts.  HP2 7YU
   UK

   Phone: +44 1442 438025
   EMail: Les_Bell@3Com.com

   Andrew Smith
   Extreme Networks
   3585 Monroe St.
   Santa Clara, CA 95051
   USA

   Phone: +1 408 579 2821
   EMail: andrew@extremenetworks.com

   Paul Langille
   Newbridge Networks
   5 Corporate Drive
   Andover, MA 01810
   USA

   Phone: +1 978 691 4665
   EMail: langille@newbridge.com

   Anil Rijhsinghani
   Cabletron Systems
   50 Minuteman Road
   Andover, MA 01810
   USA

   Phone: +1 978 684 1295
   EMail: anil@cabletron.com

   Keith McCloghrie
   cisco Systems, Inc.
   170 West Tasman Drive
   San Jose, CA 95134-1706
   USA

   Phone: +1 408 526 5260
   EMail: kzm@cisco.com

10.  Intellectual Property

   The IETF takes no position regarding the validity or scope of any
   intellectual property or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; neither does it represent that it
   has made any effort to identify any such rights.  Information on the
   IETF's procedures with respect to rights in standards-track and
   standards-related documentation can be found in BCP-11.  Copies of
   claims of rights made available for publication and any assurances of
   licenses to be made available, or the result of an attempt made to
   obtain a general license or permission for the use of such
   proprietary rights by implementors or users of this specification can
   be obtained from the IETF Secretariat.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights which may cover technology that may be required to practice
   this standard.  Please address the information to the IETF Executive
   Director.

11.  Full Copyright Statement

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

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