rfc2955.txt

著名的RFC文档,其中有一些文档是已经翻译成中文的的.

         frAtmIwfConnAtm2FrLastChange  OBJECT-TYPE
             SYNTAX      TimeStamp
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                     "The value of sysUpTime at the time this
                     interworking connection entered its current
                     operational state in the ATM to FR direction.  If
                     the current state was entered prior to the last
                     re-initialization of the local network management
                     subsystem, then this object contains a zero
                     value."
             ::= { frAtmIwfConnectionEntry 10 }

         frAtmIwfConnFr2AtmOperStatus     OBJECT-TYPE
             SYNTAX      INTEGER { up(1), down(2) }
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                     "The current operational state of this
                     interworking connection in the frame relay
                     to ATM direction."
             ::= { frAtmIwfConnectionEntry 11 }

         frAtmIwfConnFr2AtmLastChange  OBJECT-TYPE
             SYNTAX      TimeStamp
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                     "The value of sysUpTime at the time this
                     interworking connection entered its current
                     operational state in the FR to ATM direction.  If
                     the current state was entered prior to the last



Rehbehn, et al.             Standards Track                    [Page 18]

RFC 2955           FR to ATM Service Interworking MIB       October 2000


                     re-initialization of the local network management
                     subsystem, then this object contains a zero
                     value."
             ::= { frAtmIwfConnectionEntry 12 }

         frAtmIwfConnectionDescriptor  OBJECT-TYPE
             SYNTAX      Integer32
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                     "The value represents a pointer to the relevant
                     descriptor in the IWF descriptor table.  An
                     attempt to set this value to an inactive or non-
                     existent row in the Connection Descriptor Table
                     MUST fail (error code 'inconsistentValue')."
             ::= { frAtmIwfConnectionEntry 13 }

         frAtmIwfConnFailedFrameTranslate OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "Frames"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                     "This object counts the number of frames discarded
                     by the IWF because, while operating in Translation
                     Mode, the IWF is unable to decode the incoming
                     frame payload header according to the mapping
                     rules. (i.e., payload header not recognized by the
                     IWF).

                     Frame relay frames are received in the frame relay
                     to ATM direction of the PVC.

                     When operating in Transparent Mode, the IWF MUST
                     return noSuchInstance."
                       REFERENCE
                                "FRF.8 [17], Section 5.3.1"
                       ::= { frAtmIwfConnectionEntry 14 }

         frAtmIwfConnOverSizedFrames OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "Frames"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                     "Count of frames discarded by the IWF because the
                     frame is too large to be processed by the AAL5
                     segmentation procedure.  Specifically, the frame



Rehbehn, et al.             Standards Track                    [Page 19]

RFC 2955           FR to ATM Service Interworking MIB       October 2000


                     does not conform to the size specified in the
                     atmVccAal5CpcsTransmitSduSize object associated
                     with the atmVclEntry at the ATM endpoint.
                     Frame relay frames are received in the frame relay
                     to ATM direction of the PVC."
                       REFERENCE
                                "ATM MIB [21], atmVclTable
                                 FRF.8 [17], 5.3.1.4"
                       ::= { frAtmIwfConnectionEntry 15 }

         frAtmIwfConnFailedAal5PduTranslate OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "PDUs"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                     "This attribute counts the number of AAL5 PDUs
                     discarded by the IWF because, while operating in
                     Translation Mode, the IWF is unable to decode the
                     incoming AAL5 PDU payload header according to the
                     mapping rules. (i.e., payload header not
                     recognized by the IWF).

                     AAL5 PDUs are received in the ATM to frame relay
                     direction of the PVC.

                     When operating in Transparent Mode, the IWF MUST
                     return noSuchInstance."
                       REFERENCE
                                "FRF.8 [17], Section 5.3.1"
                       ::= { frAtmIwfConnectionEntry 16 }

         frAtmIwfConnOverSizedSDUs OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "SDUs"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                     "Count of AAL5 SDUs discarded by the IWF because
                     the SDU is too large to be forwarded on the frame
                     relay segment of the connection.  Specifically,
                     the frame does not conform to the size specified
                     in the frLportFragSize object of the FRS MIB [19].

                     AAL5 PDUs are received in the ATM to frame relay
                     direction of the PVC."
                       REFERENCE
                                "FRS MIB [19], frLportTable



Rehbehn, et al.             Standards Track                    [Page 20]

RFC 2955           FR to ATM Service Interworking MIB       October 2000


                                 FRF.8 [17], 5.3.1.4"
                       ::= { frAtmIwfConnectionEntry 17 }

         frAtmIwfConnCrcErrors OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "PDUs"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                     "The number of AAL5 CPCS PDUs received with CRC-32
                     errors on this AAL5 VCC at the IWF.

                     AAL5 PDUs are received in the ATM to frame relay
                     direction of the PVC."
                       REFERENCE
                                "ATM MIB [21], atmVclTable"
                       ::= { frAtmIwfConnectionEntry 18 }

         frAtmIwfConnSarTimeOuts OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "PDUs"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                     "The number of partially re-assembled AAL5 CPCS
                     PDUs which were discarded on this AAL5 VCC at the
                     IWF because they were not fully re-assembled
                     within the required time period.  If the re-
                     assembly timer is not supported, then this object
                     contains a zero value.

                     AAL5 PDUs are received in the ATM to frame relay
                     direction of the PVC."
                       REFERENCE
                                "ATM MIB [21], atmVclTable"
                       ::= { frAtmIwfConnectionEntry 19 }

         --
         -- The FR/ATM PVC Service IWF Connection Descriptor Group
         --
         --     The Frame Relay/ATM PVC Service Interworking Function
         --     Connection Descriptor table.  A descriptor provides the
         --     attributes for a type of interworked connection.
         --

         frAtmIwfConnectionDescriptorIndexNext OBJECT-TYPE
              SYNTAX      Integer32 (0..2147483647)
              MAX-ACCESS  read-only



Rehbehn, et al.             Standards Track                    [Page 21]

RFC 2955           FR to ATM Service Interworking MIB       October 2000


              STATUS      current
              DESCRIPTION
                     "This object contains an appropriate value to be
                     used for frAtmIwfConnectionDescriptorIndex  when
                     creating entries in the
                     frAtmIwfConnectionDescriptorTable. The value 0
                     indicates that no unassigned entries are
                     available. To obtain the
                     frAtmIwfConnectionDescriptorIndexNext value for a
                     new entry, the manager issues a management
                     protocol retrieval operation to obtain the current
                     value of this object.  After each retrieval, the
                     agent should modify the value to the next
                     unassigned index."
              ::= { frAtmIwfMIBObjects 3 }

         frAtmIwfConnectionDescriptorTable OBJECT-TYPE
             SYNTAX      SEQUENCE OF FrAtmIwfConnectionDescriptorEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                     "A table in which each row represents a descriptor
                     for one type of Frame Relay/ATM interworking
                     connection.  A descriptor may be assigned to zero
                     or more FR/ATM PVC service IWF connections."
             ::= { frAtmIwfMIBObjects 4 }

         frAtmIwfConnectionDescriptorEntry OBJECT-TYPE
             SYNTAX      FrAtmIwfConnectionDescriptorEntry
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                     "An entry for a descriptor in an interworking
                     connection between a frame relay PVC and an ATM
                     PVC."
             INDEX   { frAtmIwfConnectionDescriptorIndex  }
             ::= { frAtmIwfConnectionDescriptorTable 1 }

         FrAtmIwfConnectionDescriptorEntry ::=
             SEQUENCE {
                 frAtmIwfConnectionDescriptorIndex      Integer32,
                 frAtmIwfConnDescriptorRowStatus        RowStatus,
                 frAtmIwfConnDeToClpMappingMode         INTEGER,
                 frAtmIwfConnClpToDeMappingMode         INTEGER,
                 frAtmIwfConnCongestionMappingMode      INTEGER,
                 frAtmIwfConnEncapsulationMappingMode   INTEGER,
                 frAtmIwfConnEncapsulationMappings      BITS,
                 frAtmIwfConnFragAndReassEnabled        INTEGER,



Rehbehn, et al.             Standards Track                    [Page 22]

RFC 2955           FR to ATM Service Interworking MIB       October 2000


                 frAtmIwfConnArpTranslationEnabled      INTEGER
         }

         frAtmIwfConnectionDescriptorIndex OBJECT-TYPE
             SYNTAX      Integer32 (1..2147483647)
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                     "A unique value to identify a descriptor in the
                     table "
             ::= { frAtmIwfConnectionDescriptorEntry 1 }

         frAtmIwfConnDescriptorRowStatus OBJECT-TYPE
             SYNTAX      RowStatus
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                     "The status of this table row.  This object is
                     used to create or delete an entry in the
                     descriptor table.

                     Creation of the row requires a row index (see
                     frAtmIwfConnectionDescriptorIndexNext).  If not
                     explicitly set or in existence, all other columns
                     of the row will be created and initialized to the
                     default value.  During creation, this object MAY
                     be set to 'createAndGo(4)' or 'createAndWait(5)'.
                     The object MUST contain the value 'active(1)'
                     before any connection table entry references the
                     row.

                     To destroy a row in this table, this object is set
                     to the 'destroy(6)' action.  Row destruction MUST
                     fail (error code 'inconsistentValue') if any
                     connection references the row."
             ::= { frAtmIwfConnectionDescriptorEntry 2 }

         frAtmIwfConnDeToClpMappingMode OBJECT-TYPE
             SYNTAX      INTEGER {
                            mode1(1),
                            mode2Const0(2),
                            mode2Const1(3)
                         }
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                     "This object describes which mode of translation
                     is in use for loss priority mapping in the frame



Rehbehn, et al.             Standards Track                    [Page 23]

RFC 2955           FR to ATM Service Interworking MIB       October 2000


                     relay to ATM direction.