rfc1493.txt

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              ::= { dot1dStp 13 }

          dot1dStpBridgeForwardDelay OBJECT-TYPE
              SYNTAX  Timeout (400..3000)
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The value that all bridges use for ForwardDelay
                      when this bridge is acting as the root.  Note that
                      802.1D-1990 specifies that the range for this
                      parameter is related to the value of
                      dot1dStpBridgeMaxAge.  The granularity of this
                      timer is specified by 802.1D-1990 to be 1 second.
                      An agent may return a badValue error if a set is
                      attempted to a value which is not a whole number
                      of seconds."
              REFERENCE
                      "IEEE 802.1D-1990: Section 4.5.3.10"
              ::= { dot1dStp 14 }



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          -- The Spanning Tree Port Table

          dot1dStpPortTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF Dot1dStpPortEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "A table that contains port-specific information
                      for the Spanning Tree Protocol."
              ::= { dot1dStp 15 }

          dot1dStpPortEntry OBJECT-TYPE
              SYNTAX  Dot1dStpPortEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "A list of information maintained by every port
                      about the Spanning Tree Protocol state for that
                      port."
              INDEX   { dot1dStpPort }
              ::= { dot1dStpPortTable 1 }

          Dot1dStpPortEntry ::=
              SEQUENCE {
                  dot1dStpPort
                      INTEGER,
                  dot1dStpPortPriority
                      INTEGER,
                  dot1dStpPortState
                      INTEGER,
                  dot1dStpPortEnable
                      INTEGER,
                  dot1dStpPortPathCost
                      INTEGER,
                  dot1dStpPortDesignatedRoot
                      BridgeId,
                  dot1dStpPortDesignatedCost
                      INTEGER,
                  dot1dStpPortDesignatedBridge
                      BridgeId,
                  dot1dStpPortDesignatedPort
                      OCTET STRING,
                  dot1dStpPortForwardTransitions
                      Counter
              }

          dot1dStpPort OBJECT-TYPE
              SYNTAX  INTEGER (1..65535)



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              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The port number of the port for which this entry
                      contains Spanning Tree Protocol management
                      information."
              REFERENCE
                      "IEEE 802.1D-1990: Section 6.8.2.1.2"
              ::= { dot1dStpPortEntry 1 }

          dot1dStpPortPriority OBJECT-TYPE
              SYNTAX  INTEGER (0..255)
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The value of the priority field which is
                      contained in the first (in network byte order)
                      octet of the (2 octet long) Port ID.  The other
                      octet of the Port ID is given by the value of
                      dot1dStpPort."
              REFERENCE
                      "IEEE 802.1D-1990: Section 4.5.5.1"
              ::= { dot1dStpPortEntry 2 }

          dot1dStpPortState OBJECT-TYPE
              SYNTAX  INTEGER {
                          disabled(1),
                          blocking(2),
                          listening(3),
                          learning(4),
                          forwarding(5),
                          broken(6)
                      }
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The port's current state as defined by
                      application of the Spanning Tree Protocol.  This
                      state controls what action a port takes on
                      reception of a frame.  If the bridge has detected
                      a port that is malfunctioning it will place that
                      port into the broken(6) state.  For ports which
                      are disabled (see dot1dStpPortEnable), this object
                      will have a value of disabled(1)."
              REFERENCE
                      "IEEE 802.1D-1990: Section 4.5.5.2"
              ::= { dot1dStpPortEntry 3 }




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          dot1dStpPortEnable OBJECT-TYPE
              SYNTAX  INTEGER {
                          enabled(1),
                          disabled(2)
                      }
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The enabled/disabled status of the port."
              REFERENCE
                      "IEEE 802.1D-1990: Section 4.5.5.2"
              ::= { dot1dStpPortEntry 4 }

          dot1dStpPortPathCost OBJECT-TYPE
              SYNTAX  INTEGER (1..65535)
              ACCESS  read-write
              STATUS  mandatory
              DESCRIPTION
                      "The contribution of this port to the path cost of
                      paths towards the spanning tree root which include
                      this port.  802.1D-1990 recommends that the
                      default value of this parameter be in inverse
                      proportion to the speed of the attached LAN."
              REFERENCE
                      "IEEE 802.1D-1990: Section 4.5.5.3"
              ::= { dot1dStpPortEntry 5 }

          dot1dStpPortDesignatedRoot OBJECT-TYPE
              SYNTAX  BridgeId
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The unique Bridge Identifier of the Bridge
                      recorded as the Root in the Configuration BPDUs
                      transmitted by the Designated Bridge for the
                      segment to which the port is attached."
              REFERENCE
                      "IEEE 802.1D-1990: Section 4.5.5.4"
              ::= { dot1dStpPortEntry 6 }

          dot1dStpPortDesignatedCost OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The path cost of the Designated Port of the
                      segment connected to this port.  This value is
                      compared to the Root Path Cost field in received



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                      bridge PDUs."
              REFERENCE
                      "IEEE 802.1D-1990: Section 4.5.5.5"
              ::= { dot1dStpPortEntry 7 }

          dot1dStpPortDesignatedBridge OBJECT-TYPE
              SYNTAX  BridgeId
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The Bridge Identifier of the bridge which this
                      port considers to be the Designated Bridge for
                      this port's segment."
              REFERENCE
                      "IEEE 802.1D-1990: Section 4.5.5.6"
              ::= { dot1dStpPortEntry 8 }

          dot1dStpPortDesignatedPort OBJECT-TYPE
              SYNTAX  OCTET STRING (SIZE (2))
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The Port Identifier of the port on the Designated
                      Bridge for this port's segment."
              REFERENCE
                      "IEEE 802.1D-1990: Section 4.5.5.7"
              ::= { dot1dStpPortEntry 9 }

          dot1dStpPortForwardTransitions OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of times this port has transitioned
                      from the Learning state to the Forwarding state."
              ::= { dot1dStpPortEntry 10 }


          -- the dot1dTp group

          -- Implementation of the dot1dTp group is optional.  It is
          -- implemented by those bridges that support the transparent
          -- bridging mode.  A transparent or SRT bridge will implement
          -- this group.


          dot1dTpLearnedEntryDiscards OBJECT-TYPE
              SYNTAX  Counter



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              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The total number of Forwarding Database entries,
                      which have been or would have been learnt, but
                      have been discarded due to a lack of space to
                      store them in the Forwarding Database.  If this
                      counter is increasing, it indicates that the
                      Forwarding Database is regularly becoming full (a
                      condition which has unpleasant performance effects
                      on the subnetwork).  If this counter has a
                      significant value but is not presently increasing,
                      it indicates that the problem has been occurring
                      but is not persistent."
              REFERENCE
                      "IEEE 802.1D-1990: Section 6.7.1.1.3"
              ::= { dot1dTp 1 }

          dot1dTpAgingTime OBJECT-TYPE
              SYNTAX   INTEGER (10..1000000)
              ACCESS   read-write
              STATUS   mandatory
              DESCRIPTION
                      "The timeout period in seconds for aging out
                      dynamically learned forwarding information.
                      802.1D-1990 recommends a default of 300 seconds."
              REFERENCE
                      "IEEE 802.1D-1990: Section 6.7.1.1.3"
              ::= { dot1dTp 2 }


          --  The Forwarding Database for Transparent Bridges

          dot1dTpFdbTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF Dot1dTpFdbEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "A table that contains information about unicast
                      entries for which the bridge has forwarding and/or
                      filtering information.  This information is used
                      by the transparent bridging function in
                      determining how to propagate a received frame."
              ::= { dot1dTp 3 }

          dot1dTpFdbEntry OBJECT-TYPE
              SYNTAX  Dot1dTpFdbEntry
              ACCESS  not-accessible



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              STATUS  mandatory
              DESCRIPTION
                      "Information about a specific unicast MAC address
                      for which the bridge has some forwarding and/or
                      filtering information."
              INDEX   { dot1dTpFdbAddress }
              ::= { dot1dTpFdbTable 1 }

          Dot1dTpFdbEntry ::=
              SEQUENCE {
                  dot1dTpFdbAddress
                      MacAddress,
                  dot1dTpFdbPort
                      INTEGER,
                  dot1dTpFdbStatus
                      INTEGER
              }

          dot1dTpFdbAddress OBJECT-TYPE
              SYNTAX  MacAddress
              ACCESS  read-only
              STATUS  mandatory