rfc2954.txt

著名的RFC文档,其中有一些文档是已经翻译成中文的的.

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RFC 2954                Frame Relay Service MIB             October 2000


   The ifStackTable is then used to show the relationships between the
   various interfaces.

        ifStackTable Entries

        HigherLayer   LowerLayer
        0             1
        1             2
        2             3
        2             4
        2             5
        2             6
        3             7
        4             7
        5             7
        6             7
        7             0

   In the case where the frame relay service is using a single ds0, then
   the ds0Bundle is not required.

     +---------------------+
     | Frame Relay Service |
     +---------------------+
       |
     +---+
     |ds0|
     +---+
       |
     +---------------------+
     | ds1                 |
     +---------------------+

   The assignment of the index values could for example be:

        ifIndex  Description
        1        FrameRelayService (type 44)
        2        ds0               (type 81)
        3        ds1               (type 18)

   The ifStackTable is then used to show the relationships between the
   various interfaces.









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        ifStackTable Entries

        HigherLayer   LowerLayer
        0             1
        1             2
        2             3
        3             0

2.5.4.  Stack Table for V.35 Environments

   This section describes by example how to use ifStackTable to
   represent the relationship of frame relay service with V.35
   interfaces.

        +---------------------+
        | Frame Relay Service |
        +---------------------+
                   |
        +---------------------+
        | v35                 |
        +---------------------+

   An example of index values in this case could be:

           ifIndex  Description
           1        FrameRelayService (type 44)
           2        v35               (type 33)

   Note type 33 (RS232-like MIB) is used instead of type 45 (V.35).  V35
   does not pertain to this environment.

   The ifStackTable is then used to show the relationships between the
   various interfaces.

           ifStackTable Entries

           HigherLayer   LowerLayer
           0             1
           1             2
           2             0

2.5.5.  The Frame Relay/ATM PVC Service Interworking MIB

   Connections between two frame relay endpoints are represented with an
   entry in the frPVCConnectTable of this MIB.  Both endpoints are
   represented with rows in the frPVCEndptTable.  The
   frPVCEndptConnectIdentifier object of each endpoint points to the
   frPVCConnectTable cross-connect table row for the connection.



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RFC 2954                Frame Relay Service MIB             October 2000


   In contrast, a connection that spans frame relay and ATM endpoints is
   represented with an entry in the frAtmIwfConnectionTable of the
   FR/ATM PVC Service Interworking MIB defined in [28].

   In the case of an inter-worked connection, the
   frPVCEndptConnectIdentifier object is set to zero.  Instead, the
   frPVCEndptAtmIwfConnIndex object is set to the index of the FR/ATM
   IWF cross-connect table row.

   The frame relay PVC cross-connect table (frPVCConnectTable) does not
   contain an entry for the FR/ATM inter-worked connection.

2.6.  Textual Convention Change

   Version 1 of the Frame Relay Service MIB contains MIB objects defined
   with the DisplayString textual convention.  In version 2 of this MIB,
   the syntax for these objects has been updated to use the (now
   preferred) SnmpAdminString textual convention.  The new TC provides
   support for a greater variety of international character sets.

   The working group realizes that this change is not strictly supported
   by SMIv2.  In our judgment, the alternative of deprecating the old
   objects and defining new objects would have a more adverse impact on
   backward compatibility and interoperability, given the particular
   semantics of these objects.

3.  Object Definitions

FRNETSERV-MIB DEFINITIONS ::= BEGIN

IMPORTS
              MODULE-IDENTITY, OBJECT-TYPE,
              NOTIFICATION-TYPE, transmission,
              Counter32, Integer32             FROM SNMPv2-SMI
              TimeStamp, RowStatus             FROM SNMPv2-TC
              MODULE-COMPLIANCE, OBJECT-GROUP,
              NOTIFICATION-GROUP               FROM SNMPv2-CONF
              InterfaceIndex, ifIndex          FROM IF-MIB
              SnmpAdminString                  FROM SNMP-FRAMEWORK-MIB;

        frnetservMIB MODULE-IDENTITY
            LAST-UPDATED "200009280000Z" -- September 28, 2000
            ORGANIZATION "IETF Frame Relay Service MIB Working Group"
            CONTACT-INFO
                "WG Charter:
                   http://www.ietf.org/html.charters/frnetmib-charter
                 WG-email:
                   [e-mail]



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RFC 2954                Frame Relay Service MIB             October 2000


                 Subscribe:
                   [e-mail]
                 Email Archive:
                   ftp://ftp.ietf.org/ietf-mail-archive/frnetmib

                 Chair:      Andy Malis
                             Vivace Networks, Inc.
                 Email:      [e-mail]

                 WG editor:  Kenneth Rehbehn
                             Megisto Systems, Inc.
                 Email:      [e-mail]

                 Co-author:  David Fowler
                             Syndesis Limited,
                 EMail:      [e-mail]"

            DESCRIPTION
                 "The MIB module to describe generic objects for
                  Frame Relay Network Service."

            --
            -- Revision History
            --
            REVISION "200009280000Z"
            DESCRIPTION
                 "Published as RFC 2954.

                 The major new features of this revision include:

                     o  Support for read-write capability to
                        provision switch components providing service,

                     o  Support for cross-connection via a frame relay
                        to ATM service interworking function,

                     o  Support for frame relay fragmentation,

                     o  Additional frame counters to track frame
                        loss.

                 Refer to Appendix A for a comprehensive list of
                 changes since RFC 1604."

            REVISION "199311161200Z"
            DESCRIPTION
                 "Published as RFC 1604."
            ::= { transmission 44 }



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            frnetservObjects
                OBJECT IDENTIFIER ::= { frnetservMIB 1 }

            frnetservTraps
                OBJECT IDENTIFIER ::= { frnetservMIB 2 }

            frnetservTrapsPrefix
                OBJECT IDENTIFIER ::= { frnetservTraps 0 }

        --
        -- The Frame Relay Service Logical Port
        --
        frLportTable OBJECT-TYPE
            SYNTAX      SEQUENCE OF FrLportEntry
            MAX-ACCESS  not-accessible
            STATUS      current
            DESCRIPTION
                    "The Frame Relay Logical Port Information table is
                    an interface-specific addendum to the generic
                    ifTable of the Interface MIB."
            ::= { frnetservObjects 1 }

        frLportEntry OBJECT-TYPE
            SYNTAX      FrLportEntry
            MAX-ACCESS  not-accessible
            STATUS      current
            DESCRIPTION
                    "An entry in the Frame Relay Logical Port
                    Information table."
            INDEX   {   ifIndex }
            ::= { frLportTable 1 }

        FrLportEntry ::=
            SEQUENCE {
                frLportNumPlan            INTEGER,
                frLportContact            SnmpAdminString,
                frLportLocation           SnmpAdminString,
                frLportType               INTEGER,
                frLportAddrDLCILen        INTEGER,
                frLportVCSigProtocol      INTEGER,
                frLportVCSigPointer       OBJECT IDENTIFIER,
                frLportDLCIIndexValue     Integer32,
                frLportTypeAdmin          INTEGER,
                frLportVCSigProtocolAdmin INTEGER,
                frLportFragControl        INTEGER,
                frLportFragSize           Integer32
        }




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RFC 2954                Frame Relay Service MIB             October 2000


        frLportNumPlan OBJECT-TYPE
            SYNTAX      INTEGER {
                        other(1),
                        e164(2),
                        x121(3),
                        none(4)
                        }
            MAX-ACCESS  read-only
            STATUS      current
            DESCRIPTION
                    "The value of this object identifies the network
                    address numbering plan for this UNI/NNI logical
                    port. The network address is the object
                    ifPhysAddress. The value none(4) implies that
                    there is no ifPhysAddress.  The FRS agent will
                    return an octet string of zero length for
                    ifPhysAddress.  The value other(1) means that an
                    address has been assigned to this interface, but
                    the numbering plan is not enumerated here."
            REFERENCE   "E.164 [29]
                         X.121 [30]"
            ::= { frLportEntry 1 }

        frLportContact  OBJECT-TYPE
            SYNTAX      SnmpAdminString
            MAX-ACCESS  read-only
            STATUS      current
            DESCRIPTION
                    "The value of this object identifies the network
                    contact for this UNI/NNI logical port."
            ::= { frLportEntry 2 }

        frLportLocation OBJECT-TYPE
            SYNTAX      SnmpAdminString
            MAX-ACCESS  read-only
            STATUS      current
            DESCRIPTION
                    "The value of this object identifies the frame
                    relay network location for this UNI/NNI logical
                    port."
            ::= { frLportEntry 3 }

        frLportType     OBJECT-TYPE
            SYNTAX      INTEGER {
                        uni(1),
                        nni(2)
                        }