faqs.org - Internet FAQ Archives

RFC 6768 - ATM-Based xDSL Bonded Interfaces MIB


Or Display the document by number




Internet Engineering Task Force (IETF)                          E. Beili
Request for Comments: 6768                              Actelis Networks
Category: Standards Track                                  February 2013
ISSN: 2070-1721

                  ATM-Based xDSL Bonded Interfaces MIB

Abstract

   This document defines a Management Information Base (MIB) module for
   use with network management protocols in TCP/IP-based internets.
   This document proposes an extension to the GBOND-MIB module with a
   set of objects for managing ATM-based multi-pair bonded xDSL
   interfaces, as defined in ITU-T Recommendation G.998.1.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6768.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1. Introduction ....................................................2
   2. The Internet-Standard Management Framework ......................3
   3. The Broadband Forum Management Framework for xDSL Bonding .......3
   4. Relationship to Other MIB Modules ...............................3
      4.1. Relationship to Interfaces Group MIB Module ................3
      4.2. Relationship to G.Bond MIB Module ..........................3
      4.3. Relationship to ATM MIB Module .............................4
   5. MIB Structure ...................................................4
      5.1. Overview ...................................................4
      5.2. Performance Monitoring .....................................4
      5.3. Mapping of Broadband Forum TR-159 Managed Objects ..........5
   6. G.Bond/ATM MIB Definitions ......................................7
   7. Security Considerations ........................................31
   8. IANA Considerations ............................................32
   9. Acknowledgments ................................................32
   10. References ....................................................32
      10.1. Normative References .....................................32
      10.2. Informative References ...................................33

1.  Introduction

   ATM-Based Multi-Pair Bonding, a.k.a. G.Bond/ATM, is specified in
   ITU-T Recommendation G.998.1 [G.998.1], which defines a method for
   bonding (or aggregating) multiple xDSL lines (or individual bearer
   channels in multiple xDSL lines) into a single bidirectional logical
   link carrying an ATM stream.

   This specification can be viewed as an evolution of the legacy
   Inverse Multiplexing for ATM (IMA) technology [AF-PHY-0086], applied
   to xDSL with variable rates on each line/bearer channel.  As with the
   other bonding schemes, ATM bonding also allows bonding of up to 32
   individual sub-layers with variable rates, providing common
   functionality for the configuration, initialization, operation, and
   monitoring of the bonded link.

   The MIB module defined in this document defines a set of managed
   objects for the management of G.998.1 bonded interfaces, extending
   the common objects specified in the GBOND-MIB module [RFC6765].

2.  The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
   [RFC2580].

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   BCP 14, RFC 2119 [RFC2119].

3.  The Broadband Forum Management Framework for xDSL Bonding

   This document makes use of the Broadband Forum technical report
   "Management Framework for xDSL Bonding" [TR-159], defining a
   management model and a hierarchy of management objects for the bonded
   xDSL interfaces.

4.  Relationship to Other MIB Modules

   This section outlines the relationship of the MIB modules defined in
   this document with other MIB modules described in the relevant RFCs.
   Specifically, the following MIB modules are discussed: the Interfaces
   Group MIB (IF-MIB) and the G.Bond MIB (GBOND-MIB).

4.1.  Relationship to Interfaces Group MIB Module

   A G.Bond/ATM port is a private case of a bonded multi-pair xDSL
   interface and as such is managed using generic interface management
   objects defined in the IF-MIB [RFC2863].  In particular, an interface
   index (ifIndex) is used to index instances of G.Bond/ATM ports, as
   well as xDSL lines/channels, in a managed system.

4.2.  Relationship to G.Bond MIB Module

   The GBOND-MIB module [RFC6765] defines management objects common for
   all bonded multi-pair xDSL interfaces.  In particular, it describes
   the bonding management, bonded port and channel configuration,
   initialization sequence, etc.

   Both the GBOND-MIB and G9981-MIB modules are REQUIRED to manage a
   G.Bond/ATM port.

4.3.  Relationship to ATM MIB Module

   The ATM-MIB [RFC2515] module defines management objects for an ATM
   interface.

   The ATM-MIB module can be used to manage the ATM aspects of a G.Bond/
   ATM port.

5.  MIB Structure

5.1.  Overview

   All management objects defined in the G9981-MIB module are contained
   in a single group g9981Port.  This group is further split into 4
   sub-groups, structured as recommended by RFC 4181 [RFC4181]:

   o  g9981PortNotifications - containing notifications (Up/Downstream
      Differential Delay Tolerance Exceeded).

   o  g9981PortConfTable - containing objects for configuration of a
      G.Bond/ATM port.

   o  g9981PortStatusTable - containing objects providing overall status
      information of a G.Bond/ATM port, complementing the generic status
      information from the ifTable of the IF-MIB and the gBondFltStatus
      of the GBOND-MIB.

   o  g9981PM - containing objects providing historical Performance
      Monitoring (PM) information of a G.Bond/ATM port, complementing
      the PM information from the gBondPortPM of the GBOND-MIB.

   Note that the rest of the objects for the Generic Bonding Sub-layer
   (GBS) port configuration, capabilities, status, notifications, and
   Performance Monitoring are located in the GBOND-MIB module.

5.2.  Performance Monitoring

   The OPTIONAL Performance Monitoring counters, thresholds, and history
   buckets (interval-counters) are implemented using the textual
   conventions defined in the HC-PerfHist-TC-MIB [RFC3705].  The
   HC-PerfHist-TC-MIB defines 64-bit versions of the textual conventions
   found in the PerfHist-TC-MIB [RFC3593].

   The agent SHOULD align the beginning of each interval to a fifteen-
   minute boundary of a wall clock.  Likewise, the beginning of each
   one-day interval SHOULD be aligned with the start of a day.

   Counters are not reset when a GBS is re-initialized, but rather only
   when the agent is reset or re-initialized.

   Note that the accumulation of certain performance events for a
   monitored entity is inhibited (counting stops) during periods of
   service unavailability on that entity.  The DESCRIPTION clause of
   Performance Monitoring counters in this MIB module specifies which of
   the counters are inhibited during periods of service unavailability.

5.3.  Mapping of Broadband Forum TR-159 Managed Objects

   This section contains the mapping between relevant managed objects
   (attributes) defined in [TR-159] and the managed objects defined in
   this document.

   +-----------------------------+-------------------------------------+
   | TR-159 Managed Object       | Corresponding SNMP Object           |
   +-----------------------------+-------------------------------------+
   | oBondATM - Basic Package    |                                     |
   | (Mandatory)                 |                                     |
   +-----------------------------+-------------------------------------+
   | aIMARxLostCells             | g9981PortStatRxLostCells            |
   +-----------------------------+-------------------------------------+
   | aIMAPeerRxLostCells         | g9981PortStatTxLostCells            |
   +-----------------------------+-------------------------------------+
   | aIMAMaxUpDiffDelay          | g9981PortStatMaxUpDiffDelay         |
   +-----------------------------+-------------------------------------+
   | aIMAMaxDownDiffDelay        | g9981PortStatMaxDnDiffDelay         |
   +-----------------------------+-------------------------------------+
   | aIMAUpDiffDelayTolerance    | g9981PortConfUpDiffDelayTolerance   |
   +-----------------------------+-------------------------------------+
   | aIMADownDiffDelayTolerance  | g9981PortConfDnDiffDelayTolerance   |
   +-----------------------------+-------------------------------------+
   | aIMADiffDelayToleranceExcee | g9981PortConfDiffDelayToleranceExce |
   | dedEnable                   | ededEnable                          |
   +-----------------------------+-------------------------------------+
   | nIMAUpDiffDelayToleranceExc | g9981UpDiffDelayToleranceExceeded   |
   | eeded                       |                                     |
   +-----------------------------+-------------------------------------+
   | nIMADownDiffDelayToleranceE | g9981DnDiffDelayToleranceExceeded   |
   | xceeded                     |                                     |
   +-----------------------------+-------------------------------------+

                Table 1: Mapping of TR-159 Managed Objects

   Note that some of the mapping between the objects defined in TR-159
   and the ones defined in this MIB module is not one-to-one; for
   example, while TR-159 PM attributes aGroupPerf* map to the
   corresponding gBondPortPm* objects of the GBOND-MIB module, there are
   no dedicated PM attributes for the g9981PortPm* objects introduced in
   this MIB module.  However, since their definition is identical to the
   definition of gBondPortPm* objects of the GBOND-MIB module, we can
   map g9981PortPm* to the relevant aGroupPerf* attributes of TR-159 and
   use the term 'partial mapping' to denote the fact that this mapping
   is not one-to-one.

6.  G.Bond/ATM MIB Definitions

   The G9981-MIB module IMPORTS objects from SNMPv2-SMI [RFC2578],
   SNMPv2-TC [RFC2579], SNMPv2-CONF [RFC2580], IF-MIB [RFC2863], and
   HC-PerfHist-TC-MIB [RFC3705].  The module has been structured as
   recommended by [RFC4181].

G9981-MIB DEFINITIONS ::= BEGIN

  IMPORTS
    MODULE-IDENTITY,
    OBJECT-TYPE,
    NOTIFICATION-TYPE,
    mib-2,
    Unsigned32,
    Counter32
      FROM SNMPv2-SMI           -- RFC 2578
    TEXTUAL-CONVENTION,
    TruthValue
      FROM SNMPv2-TC            -- RFC 2579
    MODULE-COMPLIANCE,
    OBJECT-GROUP,
    NOTIFICATION-GROUP
      FROM SNMPv2-CONF          -- RFC 2580
    ifIndex
      FROM IF-MIB               -- RFC 2863
    HCPerfCurrentCount,
    HCPerfIntervalCount,
    HCPerfValidIntervals,
    HCPerfInvalidIntervals,
    HCPerfTimeElapsed
      FROM  HC-PerfHist-TC-MIB  -- RFC 3705
    ;
------------------------------------------------------------------------
  g9981MIB MODULE-IDENTITY
    LAST-UPDATED "201302200000Z"  -- 20 February 2013
    ORGANIZATION "IETF ADSL MIB Working Group"
    CONTACT-INFO
      "WG charter:
        http://datatracker.ietf.org/wg/adslmib/charter/

      Mailing Lists:
        General Discussion: adslmib@ietf.org
        To Subscribe: adslmib-request@ietf.org
        In Body: subscribe your_email_address

       Chair: Menachem Dodge
      Postal: ECI Telecom, Ltd.
              30 Hasivim St.,
              Petach-Tikva 4951169
              Israel
       Phone: +972-3-926-8421
       EMail: menachemdodge1@gmail.com

      Editor: Edward Beili
      Postal: Actelis Networks, Inc.
              25 Bazel St., P.O.B. 10173
              Petach-Tikva 49103
              Israel
       Phone: +972-3-924-3491
       EMail: edward.beili@actelis.com"

    DESCRIPTION
      "The objects in this MIB module are used to manage the
      multi-pair bonded xDSL interfaces using ATM inverse
      multiplexing, as defined in ITU-T Recommendation G.998.1
      (G.Bond/ATM).

      This MIB module MUST be used in conjunction with the GBOND-MIB
      module, common to all G.Bond technologies.

      The following references are used throughout this MIB module:

      [G.998.1] refers to:
        ITU-T Recommendation G.998.1: 'ATM-based multi-pair bonding',
        January 2005.

      [TR-159] refers to:
        Broadband Forum Technical Report: 'Management Framework for
        xDSL Bonding', December 2008.

      Naming Conventions:
        ATM   - Asynchronous Transfer Mode
        BCE   - Bonding Channel Entity
        BTU   - Bonding Terminating Unit
        CO    - Central Office
        CPE   - Customer Premises Equipment
        GBS   - Generic Bonding Sub-layer
        GBS-C - Generic Bonding Sub-layer, CO side
        GBS-R - Generic Bonding Sub-layer, RT (or CPE) side
        PM    - Performance Monitoring
        RT    - Remote Terminal

        SNR   - Signal to Noise Ratio
        SES   - Severely Errored Seconds
        UAS   - Unavailable Seconds

     Copyright (c) 2013 IETF Trust and the persons identified as
     authors of the code.  All rights reserved.

     Redistribution and use in source and binary forms, with or without
     modification, is permitted pursuant to, and subject to the license
     terms contained in, the Simplified BSD License set forth in Section
     4.c of the IETF Trust's Legal Provisions Relating to IETF Documents
     (http://trustee.ietf.org/license-info)."

    REVISION    "201302200000Z"  -- 20 February 2013
    DESCRIPTION "Initial version, published as RFC 6768."

    ::= { mib-2 208 }

   -- Sections of the module
   -- Structured as recommended by RFC 4181, Appendix D

   g9981Objects     OBJECT IDENTIFIER ::= { g9981MIB 1 }

   g9981Conformance OBJECT IDENTIFIER ::= { g9981MIB 2 }

   -- Groups in the module

   g9981Port        OBJECT IDENTIFIER ::= { g9981Objects 1 }

   -- Textual Conventions

   MilliSeconds ::= TEXTUAL-CONVENTION
     DISPLAY-HINT "d"
     STATUS      current
     DESCRIPTION
       "Represents time unit value in milliseconds."
     SYNTAX      Unsigned32

   -- Port Notifications group

   g9981PortNotifications OBJECT IDENTIFIER
     ::= { g9981Port 0 }

   g9981UpDiffDelayToleranceExceeded NOTIFICATION-TYPE
     OBJECTS {
       -- ifIndex is not needed here, since we are under specific GBS
       g9981PortConfUpDiffDelayTolerance,
       g9981PortStatMaxUpDiffDelay
     }
     STATUS      current
     DESCRIPTION
       "This notification indicates that the maximum upstream
       differential delay has exceeded the max upstream differential
       delay threshold, specified by
       g9981PortConfUpDiffDelayTolerance.

       This notification MAY be sent for the GBS-C ports while the
       port is 'up', on the crossing event in both directions: from
       normal (diff. delay is above the threshold) to low (diff.
       delay equals the threshold or is below it) and from low to
       normal.  This notification is not applicable to the GBS-R
       ports.

       Generation of this notification is controlled by the
       g9981PortConfDiffDelayToleranceExceededEnable attribute.

       This object maps to the TR-159 notification
       nIMAUpDiffDelayToleranceExceeded."
     REFERENCE
       "[TR-159], Section 5.5.2.8"
     ::= { g9981PortNotifications 1 }

   g9981DnDiffDelayToleranceExceeded NOTIFICATION-TYPE
     OBJECTS {
       -- ifIndex is not needed here, since we are under specific GBS
       g9981PortConfDnDiffDelayTolerance,
       g9981PortStatMaxDnDiffDelay
     }
     STATUS      current
     DESCRIPTION
       "This notification indicates that the maximum downstream
       differential delay has exceeded the max downstream
       differential delay threshold, specified by
       g9981PortConfDnDiffDelayTolerance.

       This notification MAY be sent for the GBS-C ports while the
       port is 'up', on the crossing event in both directions: from
       normal (diff. delay is above the threshold) to low (diff.
       delay equals the threshold or is below it) and from low to
       normal.  This notification is not applicable to the GBS-R
       ports.

       Generation of this notification is controlled by the
       g9981PortConfDiffDelayToleranceExceededEnable attribute.

       This object maps to the TR-159 notification
       nIMADownDiffDelayToleranceExceeded."
     REFERENCE
       "[TR-159], Section 5.5.2.9"
     ::= { g9981PortNotifications 2 }

   -- G.Bond/ATM Port group

   g9981PortConfTable OBJECT-TYPE
     SYNTAX      SEQUENCE OF G9981PortConfEntry
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "Table for configuration of G.Bond/ATM ports.  Entries in
       this table MUST be maintained in a persistent manner."
     ::= { g9981Port 1 }

   g9981PortConfEntry OBJECT-TYPE
     SYNTAX      G9981PortConfEntry
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "An entry in the G.Bond/ATM Port Configuration table.
       Each entry represents a G.Bond/ATM port indexed by the
       ifIndex.  Additional configuration parameters are available
       via the gBondPortConfEntry of the GBOND-MIB.
       Note that a G.Bond/ATM port runs on top of a single or
       multiple BCE port(s), which are also indexed by the ifIndex."
     INDEX  { ifIndex }
     ::= { g9981PortConfTable 1 }

   G9981PortConfEntry ::=
     SEQUENCE {
       g9981PortConfUpDiffDelayTolerance             MilliSeconds,
       g9981PortConfDnDiffDelayTolerance             MilliSeconds,
       g9981PortConfDiffDelayToleranceExceededEnable TruthValue
     }

   g9981PortConfUpDiffDelayTolerance  OBJECT-TYPE
     SYNTAX      MilliSeconds (0..2047)
     UNITS       "milliseconds"
     MAX-ACCESS  read-write
     STATUS      current

     DESCRIPTION
       "A maximum tolerated upstream differential delay (among
       the member BCEs) of a G.Bond/ATM port, expressed in ms.

       This object is read-write for the GBS-C ports.
       It is irrelevant for the GBS-R ports -- an attempt to read or
       change this object MUST be rejected (in the case of SNMP, with
       the error inconsistentValue).

       This object maps to the TR-159 attribute
       aIMAUpDiffDelayTolerance."
     REFERENCE
       "[TR-159], Section 5.5.2.5; [G.998.1], Section 11.4.1 (6)"
     ::= { g9981PortConfEntry 1 }

   g9981PortConfDnDiffDelayTolerance  OBJECT-TYPE
     SYNTAX      MilliSeconds (0..2047)
     UNITS       "milliseconds"
     MAX-ACCESS  read-write
     STATUS      current
     DESCRIPTION
       "A maximum tolerated downstream differential delay (among
       the member BCEs) of a G.Bond/ATM port, expressed in ms.

       This object is read-write for the GBS-C ports.
       It is irrelevant for the GBS-R ports -- an attempt to read or
       change this object MUST be rejected (in the case of SNMP, with
       the error inconsistentValue).

       This object maps to the TR-159 attribute
       aIMADownDiffDelayTolerance."
     REFERENCE
       "[TR-159], Section 5.5.2.6; [G.998.1], Section 11.4.1 (6)"
     ::= { g9981PortConfEntry 2 }

   g9981PortConfDiffDelayToleranceExceededEnable  OBJECT-TYPE
     SYNTAX      TruthValue
     MAX-ACCESS  read-write
     STATUS      current
     DESCRIPTION
       "Indicates whether g9981UpDiffDelayToleranceExceeded and
       g9981DnDiffDelayToleranceExceeded notifications should
       be generated for G.Bond/ATM port.

       A value of true(1) indicates that the notifications are enabled.
       A value of false(2) indicates that the notifications are
       disabled.

       This object is read-write for the GBS-C.
       It is irrelevant for the GBS-R ports -- an attempt to read or
       change this object MUST be rejected (in the case of SNMP, with
       the error inconsistentValue).

       This object maps to the TR-159 attribute
       aIMADiffDelayToleranceExceededEnable."
     REFERENCE
       "[TR-159], Section 5.5.5.7"
     ::= { g9981PortConfEntry 3 }

   g9981PortStatTable OBJECT-TYPE
     SYNTAX      SEQUENCE OF G9981PortStatEntry
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "This table provides overall status information of G.Bond/ATM
       ports, complementing the generic status information from the
       ifTable of the IF-MIB and the gBondFltStatus of the GBOND-MIB.
       Additional status information about connected BCEs is available
       from the relevant line MIBs.

       This table contains live data from the equipment.  As such, it
       is NOT persistent."
     ::= { g9981Port 2 }

   g9981PortStatEntry OBJECT-TYPE
     SYNTAX      G9981PortStatEntry
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "An entry in the G.Bond/ATM Port Status table.
       Each entry represents a G.Bond/ATM port indexed by the
       ifIndex.
       Note that a GBS port runs on top of a single or multiple BCE
       port(s), which are also indexed by the ifIndex."
     INDEX  { ifIndex }
     ::= { g9981PortStatTable 1 }

   G9981PortStatEntry ::=
     SEQUENCE {
       g9981PortStatRxLostCells      Counter32,
       g9981PortStatTxLostCells      Counter32,
       g9981PortStatMaxUpDiffDelay   Unsigned32,
       g9981PortStatMaxDnDiffDelay   Unsigned32
     }

   g9981PortStatRxLostCells  OBJECT-TYPE
     SYNTAX      Counter32
     UNITS       "cells"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "The number of lost ATM cells detected by the G.Bond/ATM port
       in the receive direction (e.g., upstream direction for
       a GBS-C port).

       Discontinuities in the value of this counter can occur at
       re-initialization of the management system, and at other times
       as indicated by the value of ifCounterDiscontinuityTime as
       defined in the IF-MIB.

       This object maps to the TR-159 attribute aIMARxLostCells."
     REFERENCE
       "[TR-159], Section 5.5.2.1; [G.998.1], Section 11.4.2 (4)"
     ::= { g9981PortStatEntry 1 }

   g9981PortStatTxLostCells  OBJECT-TYPE
     SYNTAX      Counter32
     UNITS       "cells"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "The number of lost ATM cells detected by the peer G.Bond/ATM
       port in the receive direction, i.e., downstream direction for a
       GBS-C port.

       This object is irrelevant for the GBS-R ports -- an attempt to
       read it MUST be rejected (in the case of SNMP, with the error
       inconsistentValue).

       Discontinuities in the value of this counter can occur at
       re-initialization of the management system, and at other times
       as indicated by the value of ifCounterDiscontinuityTime as
       defined in the IF-MIB.

       This object maps to the TR-159 attribute aIMAPeerRxLostCells."
     REFERENCE
       "[TR-159], Section 5.5.2.2; [G.998.1], Section 11.4.2 (4)"
     ::= { g9981PortStatEntry 2 }

   g9981PortStatMaxUpDiffDelay  OBJECT-TYPE
     SYNTAX      Unsigned32
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only

     STATUS      current
     DESCRIPTION
       "Current maximum upstream differential delay between all
       operational BCEs in the G.Bond/ATM bonding group, measured in
       units of 0.1 ms.

       This object is read-only for the GBS-C ports.
       It is irrelevant for the GBS-R ports -- an attempt to read this
       object MUST be rejected (in the case of SNMP, with the error
       inconsistentValue).

       This object maps to the TR-159 attribute aIMAMaxUpDiffDelay."
     REFERENCE
       "[TR-159], Section 5.5.2.3"
     ::= { g9981PortStatEntry 3 }

   g9981PortStatMaxDnDiffDelay  OBJECT-TYPE
     SYNTAX      Unsigned32
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "Current maximum downstream differential delay between all
       operational BCEs in the G.Bond/ATM bonding group, measured in
       units of 0.1 ms.

       This object is read-only for the GBS-C ports.
       It is irrelevant for the GBS-R ports -- an attempt to read this
       object MUST be rejected (in the case of SNMP, with the error
       inconsistentValue).

       This object maps to the TR-159 attribute aIMAMaxDownDiffDelay."
     REFERENCE
       "[TR-159], Section 5.5.2.4"
     ::= { g9981PortStatEntry 4 }

   -------------------------------
   -- Performance Monitoring group
   -------------------------------

   g9981PM   OBJECT IDENTIFIER ::= { g9981Port 3 }

   g9981PortPmCurTable OBJECT-TYPE
     SYNTAX      SEQUENCE OF G9981PortPmCurEntry
     MAX-ACCESS  not-accessible
     STATUS      current

     DESCRIPTION
       "This table contains current Performance Monitoring information
       for a G.Bond/ATM port.  This table contains live data from the
       equipment and as such is NOT persistent."
     ::= { g9981PM 1 }

   g9981PortPmCurEntry OBJECT-TYPE
     SYNTAX      G9981PortPmCurEntry
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "An entry in the G.Bond/ATM Port PM table.
       Each entry represents a G.Bond/ATM port indexed by the
       ifIndex."
     INDEX  { ifIndex }
     ::= { g9981PortPmCurTable 1 }

   G9981PortPmCurEntry ::=
     SEQUENCE {
       g9981PortPmCur15MinValidIntervals   HCPerfValidIntervals,
       g9981PortPmCur15MinInvalidIntervals HCPerfInvalidIntervals,
       g9981PortPmCur15MinTimeElapsed      HCPerfTimeElapsed,
       g9981PortPmCur15MinRxLostCells      HCPerfCurrentCount,
       g9981PortPmCur15MinTxLostCells      HCPerfCurrentCount,
       g9981PortPmCur15MinUpDiffDelay      HCPerfCurrentCount,
       g9981PortPmCur15MinDnDiffDelay      HCPerfCurrentCount,
       g9981PortPmCur1DayValidIntervals    Unsigned32,
       g9981PortPmCur1DayInvalidIntervals  Unsigned32,
       g9981PortPmCur1DayTimeElapsed       HCPerfTimeElapsed,
       g9981PortPmCur1DayRxLostCells       HCPerfCurrentCount,
       g9981PortPmCur1DayTxLostCells       HCPerfCurrentCount,
       g9981PortPmCur1DayUpDiffDelay       HCPerfCurrentCount,
       g9981PortPmCur1DayDnDiffDelay       HCPerfCurrentCount
     }

   g9981PortPmCur15MinValidIntervals  OBJECT-TYPE
     SYNTAX      HCPerfValidIntervals
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only number of 15-minute intervals for which the
       performance data was collected.  The value of this object will
       be 96 or the maximum number of 15-minute history intervals
       collected by the implementation, unless the measurement was
       (re)started recently, in which case the value will be the
       number of complete 15-minute intervals for which there are at
       least some data.

       In certain cases, it is possible that some intervals are
       unavailable.  In this case, this object reports the maximum
       interval number for which data is available.

       This object partially maps to the TR-159 attribute
       aGroupPerf15MinValidIntervals."
     REFERENCE
       "[TR-159], Section 5.5.1.32"
     ::= { g9981PortPmCurEntry 1 }

   g9981PortPmCur15MinInvalidIntervals  OBJECT-TYPE
     SYNTAX      HCPerfInvalidIntervals
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only number of 15-minute intervals for which the
       performance data was not always available.  The value will
       typically be zero, except in cases where the data for some
       intervals are not available.

       This object partially maps to the TR-159 attribute
       aGroupPerf15MinInvalidIntervals."
     REFERENCE
       "[TR-159], Section 5.5.1.33"
     ::= { g9981PortPmCurEntry 2 }

   g9981PortPmCur15MinTimeElapsed  OBJECT-TYPE
     SYNTAX      HCPerfTimeElapsed
     UNITS       "seconds"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only count of seconds that have elapsed since the
       beginning of the current 15-minute performance interval.

       This object partially maps to the TR-159 attribute
       aGroupPerfCurr15MinTimeElapsed."
     REFERENCE
       "[TR-159], Section 5.5.1.34"
     ::= { g9981PortPmCurEntry 3 }

   g9981PortPmCur15MinRxLostCells  OBJECT-TYPE
     SYNTAX      HCPerfCurrentCount
     UNITS       "cells"
     MAX-ACCESS  read-only
     STATUS      current

     DESCRIPTION
       "A read-only count of lost ATM cells detected by a G.Bond/ATM
       port (e.g., the GBS-C) in the receive direction, during the
       current 15-minute performance history interval.

       Note that the total number of lost ATM cells is indicated by the
       g9981PortStatRxLostCells object.

       This object is inhibited during Severely Errored Seconds (SES)
       or Unavailable Seconds (UAS)."
     REFERENCE
       "[TR-159], Section 5.5.2.1"
     ::= { g9981PortPmCurEntry 4}

   g9981PortPmCur15MinTxLostCells  OBJECT-TYPE
     SYNTAX      HCPerfCurrentCount
     UNITS       "cells"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only count of lost ATM cells detected by the peer
       G.Bond/ATM port (e.g., by the GBS-R for the GBS-C) during the
       current 15-minute performance history interval.

       Note that the total number of lost ATM cells is indicated by the
       g9981PortStatTxLostCells object.

       This object is inhibited during Unavailable Seconds (UAS)."
     REFERENCE
       "[TR-159], Section 5.5.2.2"
     ::= { g9981PortPmCurEntry 5}

   g9981PortPmCur15MinUpDiffDelay  OBJECT-TYPE
     SYNTAX      HCPerfCurrentCount
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only value specifying the maximum upstream differential
       delay between all operational BCEs in the GBS-C, measured in
       units of 0.1 ms, during the current 15-minute performance
       interval.

       Note that the current max upstream differential delay is
       indicated by the g9981PortStatMaxUpDiffDelay object.

       This object is inhibited during Unavailable Seconds (UAS)."

     REFERENCE
       "[TR-159], Section 5.5.2.3"
     ::= { g9981PortPmCurEntry 6}

   g9981PortPmCur15MinDnDiffDelay  OBJECT-TYPE
     SYNTAX      HCPerfCurrentCount
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only value specifying the maximum downstream
       differential delay between all operational BCEs in the GBS-C
       (as perceived by the GBS-R), measured in units of 0.1 ms,
       during the current 15-minute performance history interval.

       Note that the current max downstream differential delay is
       indicated by the g9981PortStatMaxDnDiffDelay object.

       This object is inhibited during Unavailable Seconds (UAS)."
     REFERENCE
       "[TR-159], Section 5.5.2.4"
     ::= { g9981PortPmCurEntry 7}

   g9981PortPmCur1DayValidIntervals  OBJECT-TYPE
     SYNTAX      Unsigned32 (0..7)
     UNITS       "days"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only number of 1-day intervals for which data was
       collected.  The value of this object will be 7 or the maximum
       number of 1-day history intervals collected by the
       implementation, unless the measurement was (re)started recently,
       in which case the value will be the number of complete 1-day
       intervals for which there are at least some data.
       In certain cases, it is possible that some intervals are
       unavailable.  In this case, this object reports the maximum
       interval number for which data is available."
     REFERENCE
       "[TR-159], Section 5.5.1.45"
     ::= { g9981PortPmCurEntry 8 }

   g9981PortPmCur1DayInvalidIntervals  OBJECT-TYPE
     SYNTAX      Unsigned32 (0..7)
     UNITS       "days"
     MAX-ACCESS  read-only
     STATUS      current

     DESCRIPTION
       "A read-only number of 1-day intervals for which data was
       not always available.  The value will typically be zero, except
       in cases where the data for some intervals are not available."
     REFERENCE
       "[TR-159], Section 5.5.1.46"
     ::= { g9981PortPmCurEntry 9 }

   g9981PortPmCur1DayTimeElapsed  OBJECT-TYPE
     SYNTAX      HCPerfTimeElapsed
     UNITS       "seconds"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only count of seconds that have elapsed since the
       beginning of the current 1-day performance interval."
     REFERENCE
       "[TR-159], Section 5.5.1.47"
     ::= { g9981PortPmCurEntry 10 }

   g9981PortPmCur1DayRxLostCells  OBJECT-TYPE
     SYNTAX      HCPerfCurrentCount
     UNITS       "cells"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only count of lost ATM cells detected by the G.Bond/ATM
       port (e.g., the GBS-C) during the current 1-day performance
       interval.

       This object is inhibited during Severely Errored Seconds (SES)
       and Unavailable Seconds (UAS)."
     ::= { g9981PortPmCurEntry 11 }

   g9981PortPmCur1DayTxLostCells OBJECT-TYPE
     SYNTAX      HCPerfCurrentCount
     UNITS       "cells"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only count of lost ATM cells detected by the peer
       G.Bond/ATM port (e.g., by the GBS-R for the GBS-C) during the
       current 1-day performance history interval.

       This object is inhibited during Unavailable Seconds (UAS)."
     ::= { g9981PortPmCurEntry 12 }

   g9981PortPmCur1DayUpDiffDelay  OBJECT-TYPE
     SYNTAX      HCPerfCurrentCount
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only value specifying the maximum upstream differential
       delay between all operational BCEs in the GBS-C, measured in
       units of 0.1 ms, during the current 1-day performance
       interval.

       This object is inhibited during Unavailable Seconds (UAS)."
     ::= { g9981PortPmCurEntry 13 }

   g9981PortPmCur1DayDnDiffDelay  OBJECT-TYPE
     SYNTAX      HCPerfCurrentCount
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only value specifying the maximum downstream
       differential delay between all operational BCEs in the GBS-C,
       measured in units of 0.1 ms, during the current 1-day
       performance interval.

       This object is inhibited during Unavailable Seconds (UAS)."
     ::= { g9981PortPmCurEntry 14 }

   -- Port PM history: 15-min buckets

   g9981PortPm15MinTable OBJECT-TYPE
     SYNTAX      SEQUENCE OF G9981PortPm15MinEntry
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "This table contains historical 15-minute buckets of Performance
       Monitoring information for a G.Bond/ATM port (a row for each
       15-minute interval, up to 96 intervals).
       Entries in this table MUST be maintained in a persistent manner."
     ::= { g9981PM 2 }

   g9981PortPm15MinEntry OBJECT-TYPE
     SYNTAX      G9981PortPm15MinEntry
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "An entry in the G.Bond/ATM Port historical 15-minute PM table.
       Each entry represents Performance Monitoring data for a

       G.Bond/ATM port, indexed by the ifIndex, collected during a
       particular 15-minute interval, indexed by the
       g9981PortPm15MinIntervalIndex."
     INDEX  { ifIndex, g9981PortPm15MinIntervalIndex }
     ::= { g9981PortPm15MinTable 1 }

   G9981PortPm15MinEntry ::=
     SEQUENCE {
       g9981PortPm15MinIntervalIndex       Unsigned32,
       g9981PortPm15MinIntervalMoniTime    HCPerfTimeElapsed,
       g9981PortPm15MinIntervalRxLostCells HCPerfIntervalCount,
       g9981PortPm15MinIntervalTxLostCells HCPerfIntervalCount,
       g9981PortPm15MinIntervalUpDiffDelay HCPerfIntervalCount,
       g9981PortPm15MinIntervalDnDiffDelay HCPerfIntervalCount,
       g9981PortPm15MinIntervalValid       TruthValue
     }

   g9981PortPm15MinIntervalIndex  OBJECT-TYPE
     SYNTAX      Unsigned32 (1..96)
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "Performance data interval number.  1 is the most recent previous
       interval; interval 96 is 24 hours ago.
       Intervals 2..96 are OPTIONAL.

       This object partially maps to the TR-159 attribute
       aGroupPerf15MinIntervalNumber."
     REFERENCE
       "[TR-159], Section 5.5.1.57"
     ::= { g9981PortPm15MinEntry 1 }

   g9981PortPm15MinIntervalMoniTime  OBJECT-TYPE
     SYNTAX      HCPerfTimeElapsed
     UNITS       "seconds"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only count of seconds over which the performance data
       was actually monitored.  This value will be the same as the
       interval duration (900 seconds), except in a situation where
       performance data could not be collected for any reason."
     ::= { g9981PortPm15MinEntry 2 }

   g9981PortPm15MinIntervalRxLostCells  OBJECT-TYPE
     SYNTAX      HCPerfIntervalCount
     UNITS       "cells"
     MAX-ACCESS  read-only

     STATUS      current
     DESCRIPTION
       "A read-only count of lost ATM cells detected by a G.Bond/ATM
       port (e.g., the GBS-C) in the receive direction, during the
       15-minute performance history interval.

       Note that the total number of lost ATM cells is indicated by the
       g9981PortStatRxLostCells object.

       This object is inhibited during Severely Errored Seconds (SES)
       or Unavailable Seconds (UAS)."
     REFERENCE
       "[TR-159], Section 5.5.2.1"
     ::= { g9981PortPm15MinEntry 3 }

   g9981PortPm15MinIntervalTxLostCells  OBJECT-TYPE
     SYNTAX      HCPerfIntervalCount
     UNITS       "cells"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only count of lost ATM cells detected by the peer
       G.Bond/ATM port (e.g., by the GBS-R for the GBS-C) during the
       15-minute performance history interval.

       Note that the total number of lost ATM cells is indicated by the
       g9981PortStatTxLostCells object.

       This object is inhibited during Unavailable Seconds (UAS)."
     REFERENCE
       "[TR-159], Section 5.5.2.2"
     ::= { g9981PortPm15MinEntry 4 }

   g9981PortPm15MinIntervalUpDiffDelay  OBJECT-TYPE
     SYNTAX      HCPerfIntervalCount
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only value specifying the maximum upstream differential
       delay between all operational BCEs in the GBS, measured in
       units of 0.1 ms, during the 15-minute performance history
       interval.

       Note that the current max upstream differential delay is
       indicated by the g9981PortStatMaxUpDiffDelay object.

       This object is inhibited during Unavailable Seconds (UAS)."

     REFERENCE
       "[TR-159], Section 5.5.2.3"
     ::= { g9981PortPm15MinEntry 5 }

   g9981PortPm15MinIntervalDnDiffDelay  OBJECT-TYPE
     SYNTAX      HCPerfIntervalCount
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only value specifying the maximum downstream
       differential delay between all operational BCEs in the GBS,
       as perceived by its peer port, measured in units of 0.1 ms,
       during the 15-minute performance history interval.

       Note that the current max downstream differential delay is
       indicated by the g9981PortStatMaxDnDiffDelay object.

       This object is inhibited during Unavailable Seconds (UAS)."
     REFERENCE
       "[TR-159], Section 5.5.2.4"
     ::= { g9981PortPm15MinEntry 6 }

   g9981PortPm15MinIntervalValid  OBJECT-TYPE
     SYNTAX      TruthValue
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only object indicating whether or not this history
       bucket contains valid data.  A valid bucket is reported as
       true(1) and an invalid bucket as false(2).
       If this history bucket is invalid, the BTU MUST NOT produce
       notifications based upon the value of the counters in this
       bucket.
       Note that an implementation may decide not to store invalid
       history buckets in its database.  In such a case, this object
       is not required, as only valid history buckets are available
       while invalid history buckets are simply not in the database.

       This object partially maps to the TR-159 attribute
       aGroupPerf15MinIntervalValid."
     REFERENCE
       "[TR-159], Section 5.5.1.58"
     ::= { g9981PortPm15MinEntry 7 }

   -- Port PM history: 1-day buckets

   g9981PortPm1DayTable OBJECT-TYPE
     SYNTAX      SEQUENCE OF G9981PortPm1DayEntry
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "This table contains historical 1-day buckets of Performance
       Monitoring information for a G.Bond/ATM port (a row for each
       1-day interval, up to 7 intervals).
       Entries in this table MUST be maintained in a persistent manner."
     ::= { g9981PM 3 }

   g9981PortPm1DayEntry OBJECT-TYPE
     SYNTAX      G9981PortPm1DayEntry
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "An entry in the G.Bond/ATM Port historical 1-day PM table.
       Each entry represents Performance Monitoring data for such a
       port, indexed by the ifIndex, collected during a particular
       1-day interval, indexed by the g9981PortPm1DayIntervalIndex."
     INDEX  { ifIndex, g9981PortPm1DayIntervalIndex }
     ::= { g9981PortPm1DayTable 1 }

   G9981PortPm1DayEntry ::=
     SEQUENCE {
       g9981PortPm1DayIntervalIndex        Unsigned32,
       g9981PortPm1DayIntervalMoniTime     HCPerfTimeElapsed,
       g9981PortPm1DayIntervalRxLostCells  HCPerfIntervalCount,
       g9981PortPm1DayIntervalTxLostCells  HCPerfIntervalCount,
       g9981PortPm1DayIntervalUpDiffDelay  HCPerfIntervalCount,
       g9981PortPm1DayIntervalDnDiffDelay  HCPerfIntervalCount,
       g9981PortPm1DayIntervalValid        TruthValue
     }

   g9981PortPm1DayIntervalIndex  OBJECT-TYPE
     SYNTAX      Unsigned32 (1..7)
     MAX-ACCESS  not-accessible
     STATUS      current
     DESCRIPTION
       "Performance data interval number.  1 is the most recent previous
       interval; interval 7 is 24 hours ago.
       Intervals 2..7 are OPTIONAL.

       This object partially maps to the TR-159 attribute
       aGroupPerf1DayIntervalNumber."

     REFERENCE
       "[TR-159], Section 5.5.1.62"
     ::= { g9981PortPm1DayEntry 1 }

   g9981PortPm1DayIntervalMoniTime  OBJECT-TYPE
     SYNTAX      HCPerfTimeElapsed
     UNITS       "seconds"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A count of seconds over which the performance data was actually
       monitored.  This value will be the same as the interval duration
       (86400 seconds), except in a situation where performance data
       could not be collected for any reason.

       This object partially maps to the TR-159 attribute
       aGroupPerf1DayIntervalMoniSecs."
     REFERENCE
       "[TR-159], Section 5.5.1.64"
     ::= { g9981PortPm1DayEntry 2 }

   g9981PortPm1DayIntervalRxLostCells  OBJECT-TYPE
     SYNTAX      HCPerfIntervalCount
     UNITS       "cells"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A count of lost ATM cells detected by the G.Bond/ATM port
       (e.g., the GBS-C) during the 1-day performance history interval.

       This object is inhibited during Severely Errored Seconds (SES)
       and Unavailable Seconds (UAS)."
     ::= { g9981PortPm1DayEntry 3 }

   g9981PortPm1DayIntervalTxLostCells  OBJECT-TYPE
     SYNTAX      HCPerfIntervalCount
     UNITS       "cells"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A count of lost ATM cells detected by the peer G.Bond/ATM port
       (e.g., by the GBS-R for the GBS-C) during the 1-day performance
       history interval.

       This object is inhibited during Unavailable Seconds (UAS)."
     ::= { g9981PortPm1DayEntry 4 }

   g9981PortPm1DayIntervalUpDiffDelay  OBJECT-TYPE
     SYNTAX      HCPerfIntervalCount
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only value specifying the maximum upstream differential
       delay between all operational BCEs in the GBS-C, measured in
       units of 0.1 ms, during the 1-day performance history interval.

       This object is inhibited during Unavailable Seconds (UAS)."
     ::= { g9981PortPm1DayEntry 5 }

   g9981PortPm1DayIntervalDnDiffDelay  OBJECT-TYPE
     SYNTAX      HCPerfIntervalCount
     UNITS       "0.1 ms"
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only value specifying the maximum downstream
       differential delay between all operational BCEs in the GBS-C,
       measured in units of 0.1 ms, during the 1-day performance
       history interval.

       This object is inhibited during Unavailable Seconds (UAS)."
     ::= { g9981PortPm1DayEntry 6 }

   g9981PortPm1DayIntervalValid  OBJECT-TYPE
     SYNTAX      TruthValue
     MAX-ACCESS  read-only
     STATUS      current
     DESCRIPTION
       "A read-only object indicating whether or not this history
       bucket contains valid data.  A valid bucket is reported as
       true(1) and an invalid bucket as false(2).
       If this history bucket is invalid, the BTU MUST NOT produce
       notifications based upon the value of the counters in this
       bucket.
       Note that an implementation may decide not to store invalid
       history buckets in its database.  In such a case, this object
       is not required, as only valid history buckets are available
       while invalid history buckets are simply not in the database.

       This object partially maps to the TR-159 attribute
       aGroupPerf1DayIntervalValid."
     REFERENCE
       "[TR-159], Section 5.5.1.63"
     ::= { g9981PortPm1DayEntry 7 }

  --
  -- Conformance Statements
  --

   g9981Groups      OBJECT IDENTIFIER
     ::= { g9981Conformance 1 }

   g9981Compliances OBJECT IDENTIFIER
     ::= { g9981Conformance 2 }

   -- Object Groups

   g9981BasicGroup OBJECT-GROUP
     OBJECTS {
       g9981PortStatRxLostCells,
       g9981PortStatTxLostCells,
       g9981PortStatMaxUpDiffDelay,
       g9981PortStatMaxDnDiffDelay
     }
     STATUS      current
     DESCRIPTION
       "A collection of objects representing management information
       for a G.Bond/ATM port."
     ::= { g9981Groups 1 }

   g9981AlarmConfGroup OBJECT-GROUP
     OBJECTS {
       g9981PortConfUpDiffDelayTolerance,
       g9981PortConfDnDiffDelayTolerance,
       g9981PortConfDiffDelayToleranceExceededEnable
     }
     STATUS      current
     DESCRIPTION
       "A collection of objects required for configuration of alarm
       thresholds and notifications in G.Bond/ATM ports."
     ::= { g9981Groups 2 }

   g9981NotificationGroup NOTIFICATION-GROUP
     NOTIFICATIONS {
       g9981UpDiffDelayToleranceExceeded,
       g9981DnDiffDelayToleranceExceeded
     }
     STATUS      current
     DESCRIPTION
       "This group supports notifications of significant conditions
       associated with G.Bond/ATM ports."
     ::= { g9981Groups 3 }

   g9981PerfCurrGroup OBJECT-GROUP
     OBJECTS {
       g9981PortPmCur15MinValidIntervals,
       g9981PortPmCur15MinInvalidIntervals,
       g9981PortPmCur15MinTimeElapsed,
       g9981PortPmCur15MinRxLostCells,
       g9981PortPmCur15MinTxLostCells,
       g9981PortPmCur15MinUpDiffDelay,
       g9981PortPmCur15MinDnDiffDelay,
       g9981PortPmCur1DayValidIntervals,
       g9981PortPmCur1DayInvalidIntervals,
       g9981PortPmCur1DayTimeElapsed,
       g9981PortPmCur1DayRxLostCells,
       g9981PortPmCur1DayTxLostCells,
       g9981PortPmCur1DayUpDiffDelay,
       g9981PortPmCur1DayDnDiffDelay
     }
     STATUS      current
     DESCRIPTION
       "A collection of objects supporting OPTIONAL current Performance
       Monitoring information for G.Bond/ATM ports."
     ::= { g9981Groups 4 }

   g9981Perf15MinGroup OBJECT-GROUP
     OBJECTS {
       g9981PortPm15MinIntervalMoniTime,
       g9981PortPm15MinIntervalRxLostCells,
       g9981PortPm15MinIntervalTxLostCells,
       g9981PortPm15MinIntervalUpDiffDelay,
       g9981PortPm15MinIntervalDnDiffDelay,
       g9981PortPm15MinIntervalValid
     }
     STATUS      current
     DESCRIPTION
       "A collection of objects supporting OPTIONAL historical
       Performance Monitoring information for G.Bond/ATM ports, during
       previous 15-minute intervals."
     ::= { g9981Groups 5 }

   g9981Perf1DayGroup OBJECT-GROUP
     OBJECTS {
       g9981PortPm1DayIntervalMoniTime,
       g9981PortPm1DayIntervalRxLostCells,
       g9981PortPm1DayIntervalTxLostCells,
       g9981PortPm1DayIntervalUpDiffDelay,
       g9981PortPm1DayIntervalDnDiffDelay,
       g9981PortPm1DayIntervalValid
     }

     STATUS      current
     DESCRIPTION
       "A collection of objects supporting OPTIONAL historical
       Performance Monitoring information for G.Bond/ATM ports, during
       previous 1-day intervals."
     ::= { g9981Groups 6 }

   -- Compliance Statements

   g9981Compliance MODULE-COMPLIANCE
     STATUS      current
     DESCRIPTION
       "The compliance statement for G.Bond/ATM interfaces.
       Compliance with the following external compliance statements
       is REQUIRED:

       MIB Module             Compliance Statement
       ----------             --------------------
       IF-MIB                 ifCompliance3
       GBOND-MIB              gBondCompliance"

     MODULE  -- this module
       MANDATORY-GROUPS {
         g9981BasicGroup,
         g9981AlarmConfGroup,
         g9981NotificationGroup
       }

       GROUP       g9981PerfCurrGroup
       DESCRIPTION
         "Support for this group is only required for implementations
         supporting Performance Monitoring."

       GROUP       g9981Perf15MinGroup
       DESCRIPTION
         "Support for this group is only required for implementations
         supporting historical Performance Monitoring."

       GROUP       g9981Perf1DayGroup
       DESCRIPTION
         "Support for this group is only required for implementations
         supporting 1-day historical Performance Monitoring."

     ::= { g9981Compliances 1 }
END

7.  Security Considerations

   There are a number of managed objects defined in this MIB module with
   a MAX-ACCESS clause of read-write.  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.  These
   are the tables and objects and their sensitivity/vulnerability:

   o  Changing of g9981PortConfTable configuration parameters MAY lead
      to a potential Service Level Agreement (SLA) breach, for example,
      if a traffic delay is increased as a result of the higher delay
      tolerance (increased g9981PortConfUpDiffDelayTolerance and/or
      g9981PortConfDnDiffDelayTolerance), or the differential delay
      tolerance notifications are disabled by manipulating the
      g9981PortConfDiffDelayToleranceExceededEnable parameter.

   Some of the readable objects in this MIB module (i.e., objects with a
   MAX-ACCESS other than not-accessible) may be considered sensitive or
   vulnerable in some network environments since, collectively, they
   provide information about the performance of network interfaces and
   can reveal some aspects of their configuration.

   It is thus important to control even GET and/or NOTIFY access to
   these objects and possibly to even encrypt the values of these
   objects when sending them over the network via SNMP.

   SNMP versions prior to SNMPv3 did not include adequate security.
   Even if the network itself is secure (for example by using IPsec),
   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 module.

   Implementations SHOULD provide the security features described by the
   SNMPv3 framework (see [RFC3410]), and implementations claiming
   compliance to the SNMPv3 standard MUST include full support for
   authentication and privacy via the User-based Security Model (USM)
   [RFC3414] with the AES cipher algorithm [RFC3826].  Implementations
   MAY also provide support for the Transport Security Model (TSM)
   [RFC5591] in combination with a secure transport such as SSH
   [RFC5592] or TLS/DTLS [RFC6353].

   Further, deployment of SNMP versions prior to SNMPv3 is NOT
   RECOMMENDED.  Instead, it is RECOMMENDED to deploy SNMPv3 and to
   enable cryptographic security.  It is then a customer/operator
   responsibility to ensure that the SNMP entity giving access to an

   instance of this MIB module 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.  IANA Considerations

   IANA has assigned 208 as the object identifier for g9981MIB
   MODULE-IDENTITY in the MIB-2 transmission sub-tree
   <http://www.iana.org/>.

9.  Acknowledgments

   This document was produced by the [ADSLMIB] working group.

   Special thanks to Dan Romascanu for his meticulous review of this
   text.

10.  References

10.1.  Normative References

   [G.998.1]  ITU-T, "ATM-based multi-pair bonding", ITU-T
              Recommendation G.998.1, January 2005,
              <http://www.itu.int/rec/T-REC-G.998.1/en>.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2578]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Structure of Management Information
              Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

   [RFC2579]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Textual Conventions for SMIv2",
              STD 58, RFC 2579, April 1999.

   [RFC2580]  McCloghrie, K., Perkins, D., and J. Schoenwaelder,
              "Conformance Statements for SMIv2", STD 58, RFC 2580,
              April 1999.

   [RFC2863]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group
              MIB", RFC 2863, June 2000.

   [RFC3414]  Blumenthal, U. and B. Wijnen, "User-based Security Model
              (USM) for version 3 of the Simple Network Management
              Protocol (SNMPv3)", STD 62, RFC 3414, December 2002.

   [RFC3705]  Ray, B. and R. Abbi, "High Capacity Textual Conventions
              for MIB Modules Using Performance History Based on 15
              Minute Intervals", RFC 3705, February 2004.

   [RFC3826]  Blumenthal, U., Maino, F., and K. McCloghrie, "The
              Advanced Encryption Standard (AES) Cipher Algorithm in the
              SNMP User-based Security Model", RFC 3826, June 2004.

   [RFC5591]  Harrington, D. and W. Hardaker, "Transport Security Model
              for the Simple Network Management Protocol (SNMP)",
              RFC 5591, June 2009.

   [RFC5592]  Harrington, D., Salowey, J., and W. Hardaker, "Secure
              Shell Transport Model for the Simple Network Management
              Protocol (SNMP)", RFC 5592, June 2009.

   [RFC6353]  Hardaker, W., "Transport Layer Security (TLS) Transport
              Model for the Simple Network Management Protocol (SNMP)",
              RFC 6353, July 2011.

   [RFC6765]  Beili, E. and M. Morgenstern, "xDSL Multi-Pair Bonding
              (G.Bond) MIB", RFC 6765, February 2013.

   [TR-159]   Beili, E. and M. Morgenstern, "Management Framework for
              xDSL Bonding", Broadband Forum Technical Report TR-159,
              December 2008, <http://www.broadband-forum.org/technical/
              download/TR-159.pdf>.

10.2.  Informative References

   [ADSLMIB]  IETF, "ADSL MIB (adslmib) Charter",
              <http://datatracker.ietf.org/wg/adslmib/charter/>.

   [AF-PHY-0086]
              ATM Forum, "Inverse Multiplexing for ATM (IMA)
              Specification Version 1.1", ATM Forum specification af-
              phy-0086.001, March 1999, <http://www.broadband-forum.org/
              ftp/pub/approved-specs/af-phy-0086.001.pdf>.

   [RFC2515]  Tesink, K., "Definitions of Managed Objects for ATM
              Management", RFC 2515, February 1999.

   [RFC3410]  Case, J., Mundy, R., Partain, D., and B. Stewart,
              "Introduction and Applicability Statements for Internet-
              Standard Management Framework", RFC 3410, December 2002.

   [RFC3593]  Tesink, K., "Textual Conventions for MIB Modules Using
              Performance History Based on 15 Minute Intervals",
              RFC 3593, September 2003.

   [RFC4181]  Heard, C., "Guidelines for Authors and Reviewers of MIB
              Documents", BCP 111, RFC 4181, September 2005.

Author's Address

   Edward Beili
   Actelis Networks
   25 Bazel St.
   Petach-Tikva  49103
   Israel

   Phone: +972-3-924-3491
   EMail: edward.beili@actelis.com

 

User Contributions:

Comment about this RFC, ask questions, or add new information about this topic:

CAPTCHA