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RFC 4070 - Definitions of Managed Object Extensions for Very Hig


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Network Working Group                                           M. Dodge
Request for Comments: 4070                                   ECI Telecom
Category: Standards Track                                         B. Ray
                                                  PESA Switching Systems
                                                                May 2005

                Definitions of Managed Object Extensions
       for Very High Speed Digital Subscriber Lines (VDSL) Using
             Multiple Carrier Modulation (MCM) Line Coding

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 (2005).

Abstract

   This document defines a portion of the Management Information Base
   (MIB) module for use with network management protocols in the
   Internet community.  In particular, it describes objects used for
   managing the Line Code Specific parameters of Very High Speed Digital
   Subscriber Line (VDSL) interfaces using Multiple Carrier Modulation
   (MCM) Line Coding.  It is an optional extension to the VDSL-LINE-MIB,
   RFC 3728, which handles line code independent objects.

Table of Contents

   1. The Internet-Standard Management Framework ......................2
   2. Overview ........................................................2
      2.1. Relationship of this MIB Module to other MIB Modules .......3
      2.2. Conventions used in the MIB Module .........................3
      2.3. Structure ..................................................3
      2.4. Persistence ................................................4
   3. Conformance and Compliance ......................................5
   4. Definitions .....................................................5
   5. Acknowledgments ................................................19
   6. Security Considerations ........................................19
   7. IANA Considerations ............................................21
   8. References .....................................................21
      8.1. Normative References ......................................21
      8.2. Informative References ....................................23

1.  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].

2.  Overview

   This document describes an SNMP MIB module for managing the Line Code
   Dependent, Physical Medium Dependent (PMD), Layer of MCM VDSL Lines.
   These definitions are based upon the specifications for VDSL as
   defined in T1E1, European Telecommunications Standards Institute
   (ETSI), and International Telecommunication Union (ITU) documentation
   [T1E1311, T1E1011, T1E1013, ETSI2701, ETSI2702, ITU9931, ITU9971].
   Additionally the protocol-dependent (and line-code dependent)
   management framework for VDSL lines specified by the Digital
   Subscriber Line Forum (DSLF) has been taken into consideration
   [DSLFTR57].

   The MIB module is located in the MIB tree under MIB-2 transmission.

   The key words "MUST", "MUST NOT", "RECOMMENDED", and "SHOULD" in this
   document are to be interpreted as described in [RFC2119].

2.1.  Relationship of this MIB Module to other MIB Modules

   The relationship of the VDSL Line MIB module to other MIB modules and
   in particular to the IF-MIB, as presented in RFC 2863 [RFC2863], is
   discussed in the VDSL-LINE-MIB, RFC 3728 [RFC3728].  This section
   outlines the relationship of this VDSL Line Extension MIB to the
   VDSL-LINE-MIB, RFC 3728 [RFC3728].

2.2.  Conventions used in the MIB Module

2.2.1.  Naming Conventions

   A.  Vtuc -- (VTUC) transceiver at near (Central) end of line
   B.  Vtur -- (VTUR) transceiver at Remote end of line
   C.  Vtu  -- One of either Vtuc or Vtur
   D.  Curr -- Current
   E.  LCS  -- Line Code Specific
   F.  Max  -- Maximum
   G.  PSD  -- Power Spectral Density
   H.  Rx   -- Receive
   I.  Tx   -- Transmit

2.3.  Structure

   The MCM VDSL Line Extension MIB contains the following MIB group:

   o   vdslMCMGroup :

   This group supports MIB objects for defining configuration profiles
   and for monitoring individual bands of Multiple Carrier Modulation
   (MCM) VDSL modems.  It contains the following tables:

       - vdslLineMCMConfProfileTable
       - vdslLineMCMConfProfileTxBandTable
       - vdslLineMCMConfProfileRxBandTable
       - vdslLineMCMConfProfileTxPSDTable
       - vdslLineMCMConfProfileMaxTxPSDTable
       - vdslLineMCMConfProfileMaxRxPSDTable

   If the MCM VDSL Line Extension MIB is implemented then all of the
   objects in this group MUST be implemented.

   Figure 1, below, displays the relationship of the tables in the
   vdslMCMGroup to the vdslGroup and to the ifEntry:

      ifEntry(ifType=97)  ----> vdslLineTableEntry 1:(0..1)

      vdslLineTableEntry (vdslLineCoding=MCM)

      vdslLineConfProfileEntry(vdslLineConfProfileName)
                 ----> vdslLineMCMConfProfileTable 1:(0..1)
                 ----> vdslLineMCMConfProfileTxBandTable 1:(0..n)
                 ----> vdslLineMCMConfProfileRxBandTable 1:(0..n)
                 ----> vdslLineMCMConfProfileTxPSDTable 1:(0..n)
                 ----> vdslLineMCMConfProfileMaxTxPSDTable 1:(0..n)
                 ----> vdslLineMCMConfProfileMaxRxPSDTable 1:(0..n)

                       Figure 1: Table Relationships

   When the object vdslLineCoding is set to MCM, vdslLineConfProfileName
   is used as the index to each of the six vdslLineMCMConfProfile
   Tables.  The existence of an entry in any of the tables of the
   vdslMCMGroup is optional.

2.4.  Persistence

   All read-create objects defined in this MIB module SHOULD be stored
   persistently.  Following is an exhaustive list of these persistent
   objects:

        vdslMCMConfProfileTxWindowLength
        vdslMCMConfProfileRowStatus
        vdslMCMConfProfileTxBandNumber
        vdslMCMConfProfileTxBandStart
        vdslMCMConfProfileTxBandStop
        vdslMCMConfProfileTxBandRowStatus
        vdslMCMConfProfileRxBandStart
        vdslMCMConfProfileRxBandStop
        vdslMCMConfProfileRxBandRowStatus
        vdslMCMConfProfileTxPSDTone
        vdslMCMConfProfileTxPSDPSD
        vdslMCMConfProfileTxPSDRowStatus
        vdslMCMConfProfileMaxTxPSDTone
        vdslMCMConfProfileMaxTxPSDPSD
        vdslMCMConfProfileMaxTxPSDRowStatus
        vdslMCMConfProfileMaxRxPSDTone
        vdslMCMConfProfileMaxRxPSDPSD
        vdslMCMConfProfileMaxRxPSDRowStatus

   Note also that the interface indices in this MIB are maintained
   persistently.  View-based Access Control Model (VACM) data relating
   to these SHOULD be stored persistently as well [RFC3415].

3.  Conformance and Compliance

   An MCM based VDSL agent does not have to implement this MIB to be
   compliant with RFC 3728 [RFC3728].  If the MCM VDSL Line Extension
   MIB is implemented then the following group is mandatory:

      -  vdslMCMGroup

4.  Definitions

   VDSL-LINE-EXT-MCM-MIB DEFINITIONS ::= BEGIN

   IMPORTS
   MODULE-IDENTITY,
   OBJECT-TYPE,
   transmission,
   Unsigned32                      FROM SNMPv2-SMI         -- [RFC2578]
   RowStatus                       FROM SNMPv2-TC          -- [RFC2579]
   MODULE-COMPLIANCE,
   OBJECT-GROUP                    FROM SNMPv2-CONF        -- [RFC2580]
   vdslLineConfProfileName         FROM VDSL-LINE-MIB;     -- [RFC3728]

   vdslExtMCMMIB MODULE-IDENTITY
      LAST-UPDATED "200504280000Z" --    April 28, 2005
      ORGANIZATION "ADSLMIB Working Group"
      CONTACT-INFO "WG-email:  adslmib@ietf.org
            Info:      https://www1.ietf.org/mailman/listinfo/adslmib

            Chair:     Mike Sneed
                       Sand Channel Systems
            Postal:    P.O. Box 37324
                       Raleigh NC 27627-732
            Email:     sneedmike@hotmail.com
            Phone:     +1 206 600 7022

            Co-Chair/Co-editor:
                       Bob Ray
                       PESA Switching Systems, Inc.
            Postal:    330-A Wynn Drive
                       Huntsville, AL 35805
                       USA
            Email:     rray@pesa.com
            Phone:     +1 256 726 9200 ext.  142

            Co-editor: Menachem Dodge
                       ECI Telecom Ltd.
            Postal:    30 hasivim St.
                       Petach Tikva 49517,
                       Israel.
            Email:     mbdodge@ieee.org
            Phone:     +972 3 926 8421
           "

   DESCRIPTION
       "The VDSL-LINE-MIB found in RFC 3728 defines objects for
       the management of a pair of VDSL transceivers at each end of
       the VDSL line.  The VDSL-LINE-MIB configures and monitors the
       line code independent parameters (TC layer) of the VDSL line.
       This MIB module is an optional extension of the VDSL-LINE-MIB
       and defines objects for configuration and monitoring of the
       line code specific (LCS) elements (PMD layer) for VDSL lines
       using MCM coding.  The objects in this extension MIB MUST NOT
       be used for VDSL lines using Single Carrier Modulation (SCM)
       line coding.  If an object in this extension MIB is referenced
       by a line which does not use MCM, it has no effect on the
       operation of that line.

       Naming Conventions:
           Vtuc -- (VTUC) transceiver at near (Central) end of line
           Vtur -- (VTUR) transceiver at Remote end of line
           Vtu  -- One of either Vtuc or Vtur
           Curr -- Current
           LCS  -- Line Code Specific
           Max  -- Maximum
           PSD  -- Power Spectral Density
           Rx   -- Receive
           Tx   -- Transmit

       Copyright (C) The Internet Society (2005).  This version
       of this MIB module is part of RFC 4070: see the RFC
       itself for full legal notices."
           REVISION "200504280000Z" --    April 28, 2005
           DESCRIPTION "Initial version, published as RFC 4070."
       ::= { transmission 229 }

   vdslLineExtMCMMib OBJECT IDENTIFIER ::= { vdslExtMCMMIB 1 }
   vdslLineExtMCMMibObjects OBJECT IDENTIFIER ::= {vdslLineExtMCMMib 1}

   --
   -- Multiple carrier modulation (MCM) configuration profile tables
   --

   vdslLineMCMConfProfileTable OBJECT-TYPE
       SYNTAX       SEQUENCE OF VdslLineMCMConfProfileEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "This table contains additional information on multiple
           carrier VDSL lines.  One entry in this table reflects a
           profile defined by a manager which can be used to
           configure the VDSL line.

           If an entry in this table is referenced by a line which
           does not use MCM, it has no effect on the operation of that
           line.

           All read-create-objects defined in this table SHOULD be
           stored persistently."

       ::= { vdslLineExtMCMMibObjects  1 }

   vdslLineMCMConfProfileEntry OBJECT-TYPE
       SYNTAX       VdslLineMCMConfProfileEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "Each entry consists of a list of parameters that
           represents the configuration of a multiple carrier
           modulation VDSL modem."
       INDEX { vdslLineConfProfileName }
       ::= { vdslLineMCMConfProfileTable 1 }

   VdslLineMCMConfProfileEntry ::=
       SEQUENCE
           {
           vdslLineMCMConfProfileTxWindowLength       Unsigned32,
           vdslLineMCMConfProfileRowStatus            RowStatus
           }

   vdslLineMCMConfProfileTxWindowLength OBJECT-TYPE
       SYNTAX       Unsigned32 (1..255)
       UNITS        "samples"
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "Specifies the length of the transmit window, counted
           in samples at the sampling rate corresponding to the
           negotiated value of N."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileEntry 1 }

   vdslLineMCMConfProfileRowStatus OBJECT-TYPE
       SYNTAX       RowStatus
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "This object is used to create a new row or modify or
           delete an existing row in this table.

           A profile is activated by setting this object to `active'.
           When `active' is set, the system will validate the profile.

           None of the columns in this row may be modified while the
           row is in the 'active' state.

           Before a profile can be deleted or taken out of
           service, (by setting this object to `destroy' or
           `notInService') it must first be unreferenced
           from all associated lines."
       ::= { vdslLineMCMConfProfileEntry 2 }

   vdslLineMCMConfProfileTxBandTable OBJECT-TYPE
       SYNTAX       SEQUENCE OF VdslLineMCMConfProfileTxBandEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "This table contains transmit band descriptor configuration
           information for a VDSL line.  Each entry in this table
           reflects the configuration for one of possibly many bands
           with a multiple carrier modulation (MCM) VDSL line.
           These entries are defined by a manager and can be used to
           configure the VDSL line.

           If an entry in this table is referenced by a line which
           does not use MCM, it has no effect on the operation of that
           line.

           All read-create-objects defined in this table SHOULD be
           stored persistently."
       ::= { vdslLineExtMCMMibObjects  2 }

   vdslLineMCMConfProfileTxBandEntry OBJECT-TYPE
       SYNTAX       VdslLineMCMConfProfileTxBandEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "Each entry consists of a transmit band descriptor, which
           is defined by a start and a stop tone index."
       INDEX { vdslLineConfProfileName,

               vdslLineMCMConfProfileTxBandNumber }
       ::= { vdslLineMCMConfProfileTxBandTable 1 }

   VdslLineMCMConfProfileTxBandEntry ::=
       SEQUENCE
           {
           vdslLineMCMConfProfileTxBandNumber           Unsigned32,
           vdslLineMCMConfProfileTxBandStart            Unsigned32,
           vdslLineMCMConfProfileTxBandStop             Unsigned32,
           vdslLineMCMConfProfileTxBandRowStatus        RowStatus
           }

   vdslLineMCMConfProfileTxBandNumber OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "The index for this band descriptor entry."
       ::= { vdslLineMCMConfProfileTxBandEntry 1 }

   vdslLineMCMConfProfileTxBandStart OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "Start tone index for this band."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileTxBandEntry 2 }

   vdslLineMCMConfProfileTxBandStop OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "Stop tone index for this band."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileTxBandEntry 3 }

   vdslLineMCMConfProfileTxBandRowStatus OBJECT-TYPE
       SYNTAX       RowStatus
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "This object is used to create a new row or modify or
           delete an existing row in this table.
           A profile is activated by setting this object to `active'.
           When `active' is set, the system will validate the profile.

           Each entry must be internally consistent, the Stop Tone must
           be greater than the Start Tone.  Each entry must also be
           externally consistent, all entries indexed by a specific
           profile must not overlap.  Validation of the profile will
           check both internal and external consistency.

           None of the columns in this row may be modified while the
           row is in the 'active' state.

           Before a profile can be deleted or taken out of
           service, (by setting this object to `destroy' or
           `notInService') it must be first unreferenced
           from all associated lines."
       ::= { vdslLineMCMConfProfileTxBandEntry 4 }

   vdslLineMCMConfProfileRxBandTable OBJECT-TYPE
       SYNTAX       SEQUENCE OF VdslLineMCMConfProfileRxBandEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "This table contains receive band descriptor configuration
           information for a VDSL line.  Each entry in this table
           reflects the configuration for one of possibly many bands
           with a multiple carrier modulation (MCM) VDSL line.
           These entries are defined by a manager and can be used to
           configure the VDSL line.

           If an entry in this table is referenced by a line which
           does not use MCM, it has no effect on the operation of that
           line.

           All read-create-objects defined in this table SHOULD be
           stored persistently."
       ::= { vdslLineExtMCMMibObjects 3 }

   vdslLineMCMConfProfileRxBandEntry OBJECT-TYPE
       SYNTAX       VdslLineMCMConfProfileRxBandEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "Each entry consists of a transmit band descriptor, which
           is defined by a start and a stop tone index."

       INDEX { vdslLineConfProfileName,
               vdslLineMCMConfProfileRxBandNumber }
       ::= { vdslLineMCMConfProfileRxBandTable 1 }

   VdslLineMCMConfProfileRxBandEntry ::=

       SEQUENCE
           {
           vdslLineMCMConfProfileRxBandNumber           Unsigned32,
           vdslLineMCMConfProfileRxBandStart            Unsigned32,
           vdslLineMCMConfProfileRxBandStop             Unsigned32,
           vdslLineMCMConfProfileRxBandRowStatus        RowStatus
           }

   vdslLineMCMConfProfileRxBandNumber OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "The index for this band descriptor entry."
       ::= { vdslLineMCMConfProfileRxBandEntry 1 }

   vdslLineMCMConfProfileRxBandStart OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "Start tone index for this band."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileRxBandEntry 2 }

   vdslLineMCMConfProfileRxBandStop OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "Stop tone index for this band."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileRxBandEntry 3 }

   vdslLineMCMConfProfileRxBandRowStatus OBJECT-TYPE
       SYNTAX       RowStatus
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "This object is used to create a new row or modify or
           delete an existing row in this table.

           A profile is activated by setting this object to `active'.
           When `active' is set, the system will validate the profile.
           Each entry must be internally consistent, the Stop Tone must
           be greater than the Start Tone.  Each entry must also be
           externally consistent, all entries indexed by a specific

           profile must not overlap.  Validation of the profile will
           check both internal and external consistency.

           None of the columns in this row may be modified while the
           row is in the 'active' state.

           Before a profile can be deleted or taken out of
           service, (by setting this object to `destroy' or
           `notInService') it must be first unreferenced
           from all associated lines."
       ::= { vdslLineMCMConfProfileRxBandEntry 4 }

   vdslLineMCMConfProfileTxPSDTable OBJECT-TYPE
       SYNTAX       SEQUENCE OF VdslLineMCMConfProfileTxPSDEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "This table contains transmit PSD mask descriptor
           configuration information for a VDSL line.  Each entry in
           this table reflects the configuration for one tone within
           a multiple carrier modulation (MCM) VDSL line.  These
           entries are defined by a manager and can be used to
           configure the VDSL line.

           If an entry in this table is referenced by a line which
           does not use MCM, it has no effect on the operation of that
           line.

           All read-create-objects defined in this table SHOULD be
           stored persistently."
       ::= { vdslLineExtMCMMibObjects 4 }

   vdslLineMCMConfProfileTxPSDEntry OBJECT-TYPE
       SYNTAX       VdslLineMCMConfProfileTxPSDEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "Each entry consists of a transmit PSD mask descriptor,
           which defines the power spectral density (PSD) for a tone."

       INDEX { vdslLineConfProfileName,
               vdslLineMCMConfProfileTxPSDNumber }
       ::= { vdslLineMCMConfProfileTxPSDTable 1 }

   VdslLineMCMConfProfileTxPSDEntry ::=
       SEQUENCE
           {
           vdslLineMCMConfProfileTxPSDNumber            Unsigned32,

           vdslLineMCMConfProfileTxPSDTone              Unsigned32,
           vdslLineMCMConfProfileTxPSDPSD               Unsigned32,
           vdslLineMCMConfProfileTxPSDRowStatus         RowStatus
           }

   vdslLineMCMConfProfileTxPSDNumber OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "The index for this mask descriptor entry."
       ::= { vdslLineMCMConfProfileTxPSDEntry 1 }

   vdslLineMCMConfProfileTxPSDTone OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "The tone index for which the PSD is being specified."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileTxPSDEntry 2 }

   vdslLineMCMConfProfileTxPSDPSD OBJECT-TYPE
       SYNTAX       Unsigned32
       UNITS        "0.5dBm/Hz"
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "Power Spectral Density level in steps of 0.5dBm/Hz with
           an offset of -140dBm/Hz."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileTxPSDEntry 3 }

       vdslLineMCMConfProfileTxPSDRowStatus OBJECT-TYPE
           SYNTAX       RowStatus
           MAX-ACCESS   read-create
           STATUS       current
           DESCRIPTION
               "This object is used to create a new row or modify or
           delete an existing row in this table.

           A profile is activated by setting this object to `active'.
           When `active' is set, the system will validate the profile.

           None of the columns in this row may be modified while the
           row is in the 'active' state.

           Before a profile can be deleted or taken out of

           service, (by setting this object to `destroy' or
           `notInService') it must be first unreferenced
           from all associated lines."
       ::= { vdslLineMCMConfProfileTxPSDEntry 4 }

   vdslLineMCMConfProfileMaxTxPSDTable OBJECT-TYPE
       SYNTAX       SEQUENCE OF VdslLineMCMConfProfileMaxTxPSDEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "This table contains transmit maximum PSD mask descriptor
           configuration information for a VDSL line.  Each entry in
           this table reflects the configuration for one tone within
           a multiple carrier modulation (MCM) VDSL modem.  These
           entries are defined by a manager and can be used to
           configure the VDSL line.

           If an entry in this table is referenced by a line which
           does not use MCM, it has no effect on the operation of that
           line.

           All read-create-objects defined in this table SHOULD be
           stored persistently."
       ::= { vdslLineExtMCMMibObjects 5 }

   vdslLineMCMConfProfileMaxTxPSDEntry OBJECT-TYPE
       SYNTAX       VdslLineMCMConfProfileMaxTxPSDEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "Each entry consists of a transmit PSD mask descriptor,
           which defines the maximum power spectral density (PSD)
           for a tone."
       INDEX { vdslLineConfProfileName,
               vdslLineMCMConfProfileMaxTxPSDNumber }
       ::= { vdslLineMCMConfProfileMaxTxPSDTable 1 }

   VdslLineMCMConfProfileMaxTxPSDEntry ::=
       SEQUENCE
           {
           vdslLineMCMConfProfileMaxTxPSDNumber            Unsigned32,
           vdslLineMCMConfProfileMaxTxPSDTone              Unsigned32,
           vdslLineMCMConfProfileMaxTxPSDPSD               Unsigned32,
           vdslLineMCMConfProfileMaxTxPSDRowStatus         RowStatus
           }

   vdslLineMCMConfProfileMaxTxPSDNumber OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)

       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "The index for this band descriptor entry."
       ::= { vdslLineMCMConfProfileMaxTxPSDEntry 1 }

   vdslLineMCMConfProfileMaxTxPSDTone OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "The tone index for which the PSD is being specified.
            There must not be multiple rows defined, for a particular
            profile, with the same value for this field."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileMaxTxPSDEntry 2 }

   vdslLineMCMConfProfileMaxTxPSDPSD OBJECT-TYPE
       SYNTAX       Unsigned32
       UNITS        "0.5dBm/Hz"
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "Power Spectral Density level in steps of 0.5dBm/Hz with
           an offset of -140dBm/Hz."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileMaxTxPSDEntry 3 }

   vdslLineMCMConfProfileMaxTxPSDRowStatus OBJECT-TYPE
       SYNTAX       RowStatus
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "This object is used to create a new row or modify or
           delete an existing row in this table.
           A profile is activated by setting this object to `active'.
           When `active' is set, the system will validate the profile.
           There must be only one entry in this table for each tone
           associated with a specific profile.  This will be checked
           during the validation process.

           None of the columns in this row may be modified while the
           row is in the 'active' state.

           Before a profile can be deleted or taken out of
           service, (by setting this object to `destroy' or
           `notInService') it must be first unreferenced
           from all associated lines."

       ::= { vdslLineMCMConfProfileMaxTxPSDEntry 4 }

   vdslLineMCMConfProfileMaxRxPSDTable OBJECT-TYPE
       SYNTAX       SEQUENCE OF VdslLineMCMConfProfileMaxRxPSDEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "This table contains maximum receive PSD mask descriptor
           configuration information for a VDSL line.  Each entry in
           this table reflects the configuration for one tone within
           a multiple carrier modulation (MCM) VDSL modem.  These
           entries are defined by a manager and can be used to
           configure the VDSL line.

           If an entry in this table is referenced by a line which
           does not use MCM, it has no effect on the operation of that
           line.

           All read-create-objects defined in this table SHOULD be
           stored persistently."
       ::= { vdslLineExtMCMMibObjects 6 }

   vdslLineMCMConfProfileMaxRxPSDEntry OBJECT-TYPE
       SYNTAX       VdslLineMCMConfProfileMaxRxPSDEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "Each entry consists of a transmit PSD mask descriptor,
           which defines the power spectral density (PSD) for a
           tone."

       INDEX { vdslLineConfProfileName,
               vdslLineMCMConfProfileMaxRxPSDNumber }
       ::= { vdslLineMCMConfProfileMaxRxPSDTable 1 }

   VdslLineMCMConfProfileMaxRxPSDEntry ::=
       SEQUENCE
           {
           vdslLineMCMConfProfileMaxRxPSDNumber            Unsigned32,
           vdslLineMCMConfProfileMaxRxPSDTone              Unsigned32,
           vdslLineMCMConfProfileMaxRxPSDPSD               Unsigned32,
           vdslLineMCMConfProfileMaxRxPSDRowStatus         RowStatus
           }

   vdslLineMCMConfProfileMaxRxPSDNumber OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   not-accessible
       STATUS       current

       DESCRIPTION
           "The index for this band descriptor entry."
       ::= { vdslLineMCMConfProfileMaxRxPSDEntry 1 }

   vdslLineMCMConfProfileMaxRxPSDTone OBJECT-TYPE
       SYNTAX       Unsigned32 (1..4096)
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "The tone index for which the PSD is being specified.
            There must not be multiple rows defined, for a particular
            profile, with the same value for this field."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileMaxRxPSDEntry 2 }

   vdslLineMCMConfProfileMaxRxPSDPSD OBJECT-TYPE
       SYNTAX       Unsigned32
       UNITS        "0.5dBm/Hz"
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "Power Spectral Density level in steps of 0.5dBm/Hz with
           an offset of -140dBm/Hz."
       REFERENCE    "T1E1.4/2000-013R4"    -- Part 3, MCM
       ::= { vdslLineMCMConfProfileMaxRxPSDEntry 3 }

   vdslLineMCMConfProfileMaxRxPSDRowStatus OBJECT-TYPE
       SYNTAX       RowStatus
       MAX-ACCESS   read-create
       STATUS       current
       DESCRIPTION
           "This object is used to create a new row or modify or
           delete an existing row in this table.

           A profile is activated by setting this object to `active'.
           When `active' is set, the system will validate the profile.
           There must be only one entry in this table for each tone
           associated with a specific profile.  This will be checked
           during the validation process.

           None of the columns in this row may be modified while the
           row is in the 'active' state.

           Before a profile can be deleted or taken out of
           service, (by setting this object to `destroy' or
           `notInService') it must be first unreferenced
           from all associated lines."
       ::= { vdslLineMCMConfProfileMaxRxPSDEntry 4 }

   -- conformance information

   vdslLineExtMCMConformance OBJECT IDENTIFIER ::=
                    { vdslLineExtMCMMib 2 }
   vdslLineExtMCMGroups OBJECT IDENTIFIER ::=
                    { vdslLineExtMCMConformance 1 }
   vdslLineExtMCMCompliances OBJECT IDENTIFIER ::=
                    { vdslLineExtMCMConformance 2 }

   vdslLineExtMCMMibCompliance MODULE-COMPLIANCE
       STATUS  current
       DESCRIPTION
           "The compliance statement for SNMP entities which
           manage VDSL interfaces."
       MODULE  -- this module
       MANDATORY-GROUPS
       {
           vdslLineExtMCMGroup
       }

       ::= { vdslLineExtMCMCompliances 1 }

   -- units of conformance

       vdslLineExtMCMGroup OBJECT-GROUP
           OBJECTS
               {
               vdslLineMCMConfProfileTxWindowLength,
               vdslLineMCMConfProfileRowStatus,
               vdslLineMCMConfProfileTxBandStart,
               vdslLineMCMConfProfileTxBandStop,
               vdslLineMCMConfProfileTxBandRowStatus,
               vdslLineMCMConfProfileRxBandStart,
               vdslLineMCMConfProfileRxBandStop,
               vdslLineMCMConfProfileRxBandRowStatus,
               vdslLineMCMConfProfileTxPSDTone,
               vdslLineMCMConfProfileTxPSDPSD,
               vdslLineMCMConfProfileTxPSDRowStatus,
               vdslLineMCMConfProfileMaxTxPSDTone,
               vdslLineMCMConfProfileMaxTxPSDPSD,
               vdslLineMCMConfProfileMaxTxPSDRowStatus,
               vdslLineMCMConfProfileMaxRxPSDTone,
               vdslLineMCMConfProfileMaxRxPSDPSD,
               vdslLineMCMConfProfileMaxRxPSDRowStatus
               }
            STATUS     current
            DESCRIPTION
                "A collection of objects providing configuration

                information for a VDSL line based upon multiple
                carrier modulation modem."
        ::= { vdslLineExtMCMGroups 1 }

   END

5.  Acknowledgments

   This document contains many definitions taken from an early version
   of the VDSL MIB [RFC3728].  As such any credit for the text found
   within should be fully attributed to the authors of that document.

6.  Security Considerations

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

      vdslLineMCMConfProfileTable,
      vdslLineMCMConfProfileTxWindowLength,
      vdslLineMCMConfProfileRowStatus,
      vdslLineMCMConfProfileTxBandTable,
      vdslLineMCMConfProfileTxBandStart,
      vdslLineMCMConfProfileTxBandStop,
      vdslLineMCMConfProfileTxBandRowStatus,
      vdslLineMCMConfProfileRxBandTable,
      vdslLineMCMConfProfileRxBandStart,
      vdslLineMCMConfProfileRxBandStop,
      vdslLineMCMConfProfileRxBandRowStatus,
      vdslLineMCMConfProfileTxPSDTable,
      vdslLineMCMConfProfileTxPSDTone,
      vdslLineMCMConfProfileTxPSDPSD,
      vdslLineMCMConfProfileTxPSDRowStatus,
      vdslLineMCMConfProfileMaxTxPSDTable
      vdslLineMCMConfProfileMaxTxPSDTone,
      vdslLineMCMConfProfileMaxTxPSDPSD,
      vdslLineMCMConfProfileMaxTxPSDRowStatus,
      vdslLineMCMConfProfileMaxRxPSDTable
      vdslLineMCMConfProfileMaxRxPSDTone,
      vdslLineMCMConfProfileMaxRxPSDPSD,
      vdslLineMCMConfProfileMaxRxPSDRowStatus

   VDSL layer connectivity from the Vtur will permit the subscriber to
   manipulate both the VDSL link directly and the VDSL embedded
   operations channel (EOC) for their own loop.  For example, unchecked
   or unfiltered fluctuations initiated by the subscriber could generate
   sufficient notifications to potentially overwhelm either the
   management interface to the network or the element manager.

   Additionally, allowing write access to configuration data may allow
   an end-user to increase their service levels or affect other end-
   users in either a positive or negative manner.  For this reason, the
   tables and objects listed above should be considered to contain
   sensitive information.

   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.  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.  These are the tables and objects and their
   sensitivity/vulnerability:

      vdslLineMCMConfProfileTable,
      vdslLineMCMConfProfileTxWindowLength,
      vdslLineMCMConfProfileRowStatus,
      vdslLineMCMConfProfileTxBandTable,
      vdslLineMCMConfProfileTxBandStart,
      vdslLineMCMConfProfileTxBandStop,
      vdslLineMCMConfProfileTxBandRowStatus,
      vdslLineMCMConfProfileRxBandTable,
      vdslLineMCMConfProfileRxBandStart,
      vdslLineMCMConfProfileRxBandStop,
      vdslLineMCMConfProfileRxBandRowStatus,
      vdslLineMCMConfProfileTxPSDTable,
      vdslLineMCMConfProfileTxPSDTone,
      vdslLineMCMConfProfileTxPSDPSD,
      vdslLineMCMConfProfileTxPSDRowStatus,
      vdslLineMCMConfProfileMaxTxPSDTable
      vdslLineMCMConfProfileMaxTxPSDTone,
      vdslLineMCMConfProfileMaxTxPSDPSD,
      vdslLineMCMConfProfileMaxTxPSDRowStatus,
      vdslLineMCMConfProfileMaxRxPSDTable
      vdslLineMCMConfProfileMaxRxPSDTone,
      vdslLineMCMConfProfileMaxRxPSDPSD,
      vdslLineMCMConfProfileMaxRxPSDRowStatus

   Read access of the physical band parameters may provide knowledge to
   an end-user that would allow malicious behavior, for example the
   application of an intentional interference on one or all of the
   physical bands in use.

   SNMP versions prior to SNMPv3 did not include adequate security.
   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 module.

   It is RECOMMENDED that implementers consider the security features as
   provided by the SNMPv3 framework (see [RFC3410], section 8),
   including full support for the SNMPv3 cryptographic mechanisms (for
   authentication and privacy).

   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 a MIB module which utilizes the textual conventions
   defined in 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.

7.  IANA Considerations

   The IANA has assigned the transmission value 229 to VDSL-LINE-EXT-
   MCM-MIB.

8.  References

8.1.  Normative References

   [DSLFTR57] DSL Forum TR-057, "VDSL Network Element Management",
              February 2003.

   [ETSI2701] ETSI TS 101 270-1 V1.2.1, "Transmission and Multiplexing
              (TM); Access transmission systems on metallic access
              cables; Very high speed Digital Subscriber Line (VDSL);
              Part 1: Functional requirements", October 1999.

   [ETSI2702] ETSI TS 101 270-2 V1.1.1, "Transmission and Multiplexing
              (TM); Access transmission systems on metallic access
              cables; Very high speed Digital Subscriber Line (VDSL);
              Part 1: Transceiver specification", February 2001.

   [ITU9931]  ITU-T G.993.1, "Very-high-speed digital subscriber line
              foundation", November 2001.

   [ITU9971]  ITU-T G.997.1, "Physical layer management for Digital
              Subscriber Line (DSL) Transceivers", July 1999.

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

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

   [RFC2579]  McCloghrie, K., Perkins, D., and J. Schoenwaelder,
              "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.

   [RFC3728]  Ray, B. and R. Abbi, "Definitions of Managed Objects for
              Very High Speed Digital Subscriber Lines (VDSL)", RFC
              3728, February 2004.

   [T1E1311]  ANSI T1E1.4/2001-311, "Very-high-bit-rate Digital
              Subscriber Line (VDSL) Metallic Interface, Part 1:
              Functional Requirements and Common Specification",
              February 2001.

   [T1E1011]  ANSI T1E1.4/2001-011R3, "VDSL Metallic Interface, Part 2:
              Technical Specification for a Single-Carrier Modulation
              (SCM) Transceiver", November 2001.

   [T1E1013]  ANSI T1E1.4/2001-013R4, "VDSL Metallic Interface, Part 3:
              Technical Specification for a Multi-Carrier Modulation
              (MCM) Transceiver", November 2000.

8.2.  Informative References

   [RFC3415]  Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based
              Access Control Model (VACM) for the Simple Network
              Management Protocol (SNMP)", STD 62, RFC 3415, December
              2002.

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

Authors' Addresses

   Menachem Dodge
   ECI Telecom Ltd.
   30 Hasivim St.
   Petach Tikva 49517,
   Israel

   Phone: +972 3 926 8421
   Fax: +972 3 928 7342
   EMail: mbdodge@ieee.org

   Bob Ray
   PESA Switching Systems, Inc.
   330-A Wynn Drive
   Huntsville, AL 35805
   USA

   Phone: +1 256 726 9200 ext.  142
   Fax: +1 256 726 9271
   EMail: rray@pesa.com

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