rfc2115.txt

著名的RFC文档,其中有一些文档是已经翻译成中文的的.

Brown & Baker               Standards Track                     [Page 8]

RFC 2115                  Frame Relay DTE MIB             September 1997




     --
     --      the range of a Data Link Connection Identifier
     --
     DLCI ::= TEXTUAL-CONVENTION
         STATUS      current
         DESCRIPTION
            "The range of DLCI values.  Note that this varies by
            interface configuration; normally, interfaces may use
            0..1023, but may be configured to use ranges as large
            as 0..2^23."
         SYNTAX      Integer32(0..8388607)



     --

     --  Data Link Connection Management Interface

     --      The variables that configure the DLC Management Interface.

     frDlcmiTable OBJECT-TYPE
         SYNTAX   SEQUENCE OF FrDlcmiEntry
         MAX-ACCESS   not-accessible
         STATUS   current
         DESCRIPTION
            "The Parameters for the Data Link Connection Management
            Interface for the frame relay service on this
            interface."
         REFERENCE
            "American National Standard T1.617-1991, Annex D"
         ::= { frameRelayDTE 1 }

     frDlcmiEntry OBJECT-TYPE
         SYNTAX   FrDlcmiEntry
         MAX-ACCESS   not-accessible
         STATUS   current
         DESCRIPTION
            "The Parameters for a particular Data Link Connection
            Management Interface."
         INDEX { frDlcmiIfIndex }
         ::= { frDlcmiTable 1 }








Brown & Baker               Standards Track                     [Page 9]

RFC 2115                  Frame Relay DTE MIB             September 1997


     FrDlcmiEntry ::=
         SEQUENCE {
             frDlcmiIfIndex                  InterfaceIndex,
             frDlcmiState                    INTEGER,
             frDlcmiAddress                  INTEGER,
             frDlcmiAddressLen               INTEGER,
             frDlcmiPollingInterval          Integer32,
             frDlcmiFullEnquiryInterval      Integer32,
             frDlcmiErrorThreshold           Integer32,
             frDlcmiMonitoredEvents          Integer32,
             frDlcmiMaxSupportedVCs          DLCI,
             frDlcmiMulticast                INTEGER,
             frDlcmiStatus                   INTEGER,
             frDlcmiRowStatus                RowStatus
     }


     frDlcmiIfIndex OBJECT-TYPE

         SYNTAX   InterfaceIndex
         MAX-ACCESS   read-only
         STATUS   current
         DESCRIPTION
            "The ifIndex value of the corresponding ifEntry."
         ::= { frDlcmiEntry 1 }


     frDlcmiState OBJECT-TYPE
         SYNTAX INTEGER      {
             noLmiConfigured (1),
             lmiRev1         (2),
             ansiT1617D      (3),  -- ANSI T1.617 Annex D
             ansiT1617B      (4),  -- ANSI T1.617 Annex B
             itut933A        (5),  -- CCITT Q933 Annex A
             ansiT1617D1994  (6)   -- ANSI T1.617a-1994 Annex D
         }
         MAX-ACCESS   read-create
         STATUS   current
         DESCRIPTION
            "This variable states which Data Link Connection
            Management scheme is active (and by implication, what
            DLCI it uses) on the Frame Relay interface."
         REFERENCE
            "American National Standard T1.617-1991, American
            National Standard T1.617a-1994, ITU-T Recommendation
            Q.933 (03/93)."

         ::= { frDlcmiEntry 2 }



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RFC 2115                  Frame Relay DTE MIB             September 1997




     frDlcmiAddress OBJECT-TYPE
         SYNTAX      INTEGER {
                     q921           (1),  -- 13 bit DLCI
                     q922March90    (2),  -- 11 bit DLCI
                     q922November90 (3),  -- 10 bit DLCI
                     q922           (4)   -- Final Standard
         }
         MAX-ACCESS  read-create
         STATUS  current
         DESCRIPTION
            "This variable states which address format is in use on
            the Frame Relay interface."
         ::= { frDlcmiEntry 3 }


     frDlcmiAddressLen OBJECT-TYPE
         SYNTAX  INTEGER     {
                 twoOctets (2),
                 threeOctets (3),
                 fourOctets (4)
         }
         MAX-ACCESS  read-create
         STATUS  current
         DESCRIPTION
            "This variable states the address length in octets.  In
            the case of Q922 format, the length indicates the
            entire length of the address including the control
            portion."
         ::= { frDlcmiEntry 4 }


     frDlcmiPollingInterval OBJECT-TYPE
         SYNTAX   Integer32 (5..30)
         UNITS    "seconds"
         MAX-ACCESS   read-create
         STATUS   current
         DESCRIPTION
            "This is the number of seconds between successive
            status enquiry messages."
         REFERENCE
            "American National Standard T1.617-1991, Section D.7
            Timer T391."
         DEFVAL { 10 }
         ::= { frDlcmiEntry 5 }





Brown & Baker               Standards Track                    [Page 11]

RFC 2115                  Frame Relay DTE MIB             September 1997


     frDlcmiFullEnquiryInterval OBJECT-TYPE
         SYNTAX   Integer32 (1..255)
         MAX-ACCESS   read-create
         STATUS   current
         DESCRIPTION
            "Number of status enquiry intervals that pass before
            issuance of a full status enquiry message."
         REFERENCE
            "American National Standard T1.617-1991, Section D.7
            Counter N391."
         DEFVAL { 6 }
         ::= { frDlcmiEntry 6 }


     frDlcmiErrorThreshold OBJECT-TYPE
         SYNTAX   Integer32 (1..10)
         MAX-ACCESS   read-create
         STATUS   current
         DESCRIPTION
            "This is the maximum number of unanswered Status
            Enquiries the equipment shall accept before declaring
            the interface down."
         REFERENCE
            "American National Standard T1.617-1991, Section D.5.1
            Counter N392."
         DEFVAL { 3 }
         ::= { frDlcmiEntry 7 }


     frDlcmiMonitoredEvents OBJECT-TYPE
         SYNTAX   Integer32 (1..10)
         MAX-ACCESS   read-create
         STATUS   current
         DESCRIPTION
            "This is the number of status polling intervals over
            which the error threshold is counted.  For example, if
            within 'MonitoredEvents' number of events the station
            receives 'ErrorThreshold' number of errors, the
            interface is marked as down."
         REFERENCE
            "American National Standard T1.617-1991, Section D.5.2
            Counter N393."
         DEFVAL { 4 }
         ::= { frDlcmiEntry 8 }







Brown & Baker               Standards Track                    [Page 12]

RFC 2115                  Frame Relay DTE MIB             September 1997


     frDlcmiMaxSupportedVCs OBJECT-TYPE
         SYNTAX   DLCI
         MAX-ACCESS   read-create
         STATUS   current
         DESCRIPTION
            "The maximum number of Virtual Circuits allowed for
            this interface.  Usually dictated by the Frame Relay
            network.

            In response to a SET, if a value less than zero or
            higher than the agent's maximal capability is
            configured, the agent should respond badValue"
         ::= { frDlcmiEntry 9 }


     frDlcmiMulticast OBJECT-TYPE
         SYNTAX   INTEGER    {
                     nonBroadcast (1),
                     broadcast (2)
                     }
         MAX-ACCESS   read-create
         STATUS   current
         DESCRIPTION
            "This indicates whether the Frame Relay interface is
            using a multicast service."
         ::= { frDlcmiEntry 10 }



     frDlcmiStatus OBJECT-TYPE
         SYNTAX   INTEGER    {
                     running      (1),    -- init complete, system running
                     fault        (2),    -- error threshold exceeded
                     initializing (3)     -- system start up
                     }
         MAX-ACCESS   read-only
         STATUS   current
         DESCRIPTION
            "This indicates the status of the Frame Relay interface
            as determined by the performance of the dlcmi.  If no
            dlcmi is running, the Frame Relay interface will stay
            in the running state indefinitely."
         ::= { frDlcmiEntry 11 }








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RFC 2115                  Frame Relay DTE MIB             September 1997


     frDlcmiRowStatus OBJECT-TYPE
         SYNTAX   RowStatus
         MAX-ACCESS   read-create
         STATUS   current
         DESCRIPTION
            "SNMP Version 2 Row Status Variable.  Writable objects
            in the table may be written in any RowStatus state."
         ::= { frDlcmiEntry 12 }


     --
     -- A Frame Relay service is a multiplexing service.  Data
     -- Link Connection Identifiers enumerate virtual circuits
     -- (permanent or dynamic) which are layered onto the underlying
     -- circuit, represented by ifEntry.  Therefore, each of the entries
     -- in the Standard MIB's Interface Table with an IfType of
     -- Frame Relay represents a Q.922 interface.  Zero or more
     -- virtual circuits are layered onto this interface and provide
     -- interconnection with various remote destinations.
     -- Each such virtual circuit is represented by an entry in the
     -- circuit table.  The management virtual circuit (i.e. DLCI 0)
     -- is a virtual circuit by this definition and will be represented
     -- with an entry in the circuit table.

     --   Circuit Table

     -- The table describing the use of the DLCIs attached to
     -- each Frame Relay Interface.

     frCircuitTable OBJECT-TYPE
         SYNTAX   SEQUENCE OF FrCircuitEntry
         MAX-ACCESS   not-accessible
         STATUS   current
         DESCRIPTION
            "A table containing information about specific Data
            Link Connections (DLC) or virtual circuits."
         ::= { frameRelayDTE 2 }














Brown & Baker               Standards Track                    [Page 14]

RFC 2115                  Frame Relay DTE MIB             September 1997


     frCircuitEntry OBJECT-TYPE
         SYNTAX   FrCircuitEntry
         MAX-ACCESS   not-accessible
         STATUS   current
         DESCRIPTION
            "The information regarding a single Data Link
            Connection.  Discontinuities in the counters contained
            in this table are indicated by the value in
            frCircuitCreationTime."
         INDEX { frCircuitIfIndex, frCircuitDlci }
         ::= { frCircuitTable 1 }


     FrCircuitEntry ::=
         SEQUENCE {
             frCircuitIfIndex                InterfaceIndex,
             frCircuitDlci                   DLCI,
             frCircuitState                  INTEGER,
             frCircuitReceivedFECNs          Counter32,
             frCircuitReceivedBECNs          Counter32,
             frCircuitSentFrames             Counter32,
             frCircuitSentOctets             Counter32,
             frCircuitReceivedFrames         Counter32,
             frCircuitReceivedOctets         Counter32,
             frCircuitCreationTime           TimeStamp,
             frCircuitLastTimeChange         TimeStamp,
             frCircuitCommittedBurst         Integer32,
             frCircuitExcessBurst            Integer32,
             frCircuitThroughput             Integer32,
             frCircuitMulticast              INTEGER,
             frCircuitType                   INTEGER,
             frCircuitDiscards               Counter32,
             frCircuitReceivedDEs            Counter32,
             frCircuitSentDEs                Counter32,
             frCircuitLogicalIfIndex         InterfaceIndex,
             frCircuitRowStatus              RowStatus
     }


     frCircuitIfIndex OBJECT-TYPE
         SYNTAX   InterfaceIndex
         MAX-ACCESS   read-only
         STATUS   current
         DESCRIPTION
            "The ifIndex Value of the ifEntry this virtual circuit
            is layered onto."
         ::= { frCircuitEntry 1 }




Brown & Baker               Standards Track                    [Page 15]

RFC 2115                  Frame Relay DTE MIB             September 1997



     frCircuitDlci OBJECT-TYPE
         SYNTAX   DLCI
         MAX-ACCESS   read-only
         STATUS   current
         DESCRIPTION
            "The Data Link Connection Identifier for this virtual
            circuit."
         REFERENCE
            "American National Standard T1.618-1991, Section 3.3.6"
         ::= { frCircuitEntry 2 }


     frCircuitState OBJECT-TYPE
         SYNTAX   INTEGER    {

                     invalid (1),
                     active (2),
                     inactive (3)
                  }
         MAX-ACCESS   read-create
         STATUS   current
         DESCRIPTION
            "Indicates whether the particular virtual circuit is
            operational.  In the absence of a Data Link Connection
            Management Interface, virtual circuit entries (rows)
            may be created by setting virtual circuit state to
            'active', or deleted by changing Circuit state to
            'invalid'.

            Whether or not the row actually disappears is left to
            the implementation, so this object may actually read as
            'invalid' for some arbitrary length of time.  It is
            also legal to set the state of a virtual circuit to
            'inactive' to temporarily disable a given circuit.

            The use of 'invalid' is deprecated in this SNMP Version
            2 MIB, in favor of frCircuitRowStatus."
         DEFVAL { active }
         ::= { frCircuitEntry 3 }











Brown & Baker               Standards Track                    [Page 16]