rfc1286.txt

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       DESCRIPTION
               "The number of frames discarded by this port due
               to excessive transit delay through the bridge.  It
               is incremented by both transparent and source
               route bridges."
       REFERENCE
                "P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"
       ::= { dot1dBasePortEntry 4 }

   dot1dBasePortMtuExceededDiscards OBJECT-TYPE
       SYNTAX  Counter
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "The number of frames discarded by this port due
               to an excessive size.  It is incremented by both
               transparent and source route bridges."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"
       ::= { dot1dBasePortEntry 5 }


   -- the dot1dStp group

   -- Implementation of the dot1dStp group is optional.  It is
   -- implemented by those bridges that support the Spanning Tree
   -- Protocol.  Transparent, Source Route, and SRT bridges will
   -- implement this group only if they support the Spanning Tree
   -- Protocol.


   dot1dStpProtocolSpecification OBJECT-TYPE
       SYNTAX  INTEGER {
                   unknown(1),
                   decLb100(2),
                   ieee8021d(3)
               }
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "An indication of what version of the Spanning
               Tree Protocol is being run.  The value
               'decLb100(2)' indicates the DEC LANbridge 100
               Spanning Tree protocol.  IEEE 802.1d
               implementations will return 'ieee8021d(3)'.  If
               future versions of the IEEE Spanning Tree Protocol
               are released that are incompatible with the
               current version a new value will be defined."



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       ::= { dot1dStp 1 }

   dot1dStpPriority OBJECT-TYPE
       SYNTAX  INTEGER (0..65535)
       ACCESS  read-write
       STATUS  mandatory
       DESCRIPTION
               "The value of the write-able portion of the Bridge
               ID, i.e., the first two octets of the (8 octet
               long) Bridge ID.  The other (last) 6 octets of the
               Bridge ID are given by the value of
               dot1dBaseBridgeAddress."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 4.5.3.7"
       ::= { dot1dStp 2 }

   dot1dStpTimeSinceTopologyChange OBJECT-TYPE
       SYNTAX  TimeTicks
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "The time (in hundredths of a second) since the
               last time a topology change was detected by the
               bridge entity."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 6.8.1.1.3"
       ::= { dot1dStp 3 }

   dot1dStpTopChanges OBJECT-TYPE
       SYNTAX  Counter
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "The total number of topology changes detected by
               this bridge since the management entity was last
               reset or initialized."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 6.8.1.1.3"
       ::= { dot1dStp 4 }

   dot1dStpDesignatedRoot OBJECT-TYPE
       SYNTAX  BridgeId
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "The bridge identifier of the root of the spanning
               tree as determined by the Spanning Tree Protocol
               as executed by this node.  This value is used as



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               the Root Identifier parameter in all Configuration
               Bridge PDUs originated by this node."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 4.5.3.1"
       ::= { dot1dStp 5 }

   dot1dStpRootCost OBJECT-TYPE
       SYNTAX  INTEGER
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "The cost of the path to the root as seen from
               this bridge."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 4.5.3.2"
       ::= { dot1dStp 6 }

   dot1dStpRootPort OBJECT-TYPE
       SYNTAX  INTEGER
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "The port number of the port which offers the
               lowest cost path from this bridge to the root
               bridge."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 4.5.3.3"
       ::= { dot1dStp 7 }

   dot1dStpMaxAge OBJECT-TYPE
       SYNTAX  Timeout
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "The maximum age of Spanning Tree Protocol
               information learned from the network on any port
               before it is discarded, in units of hundredths of
               a second.  This is the actual value that this
               bridge is currently using."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 4.5.3.4"
       ::= { dot1dStp 8 }

   dot1dStpHelloTime OBJECT-TYPE
       SYNTAX  Timeout
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION



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               "The amount of time between the transmission of
               Configuration bridge PDUs by this node on any port
               when it is the root of the spanning tree or trying
               to become so, in units of hundredths of a second.
               This is the actual value that this bridge is
               currently using."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 4.5.3.5"
       ::= { dot1dStp 9 }

   dot1dStpHoldTime OBJECT-TYPE
       SYNTAX  INTEGER
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "This time value determines the interval length
               during which no more than two Configuration bridge
               PDUs shall be transmitted by this node, in units
               of hundredths of a second."
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 4.5.3.14"
       ::= { dot1dStp 10 }

   dot1dStpForwardDelay OBJECT-TYPE
       SYNTAX  Timeout
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "This time value, measured in units of hundredths
               of a second, controls how fast a port changes its
               spanning state when moving towards the Forwarding
               state.  The value determines how long the port
               stays in a particular state before moving to the
               next state.  For example, how long a port stays in
               the Listening state when moving from Blocking to
               Learning.  This value is also used, when a
               topology change has been detected and is underway,
               to age all dynamic entries in the Forwarding
               Database.  [Note that this value is the one that
               this bridge is currently using, in contrast to
               dot1dStpBridgeForwardDelay which is the value that
               this bridge and all others would start using
               if/when this bridge were to become the root.]"
       REFERENCE
               "P802.1d/D9, July 14, 1989: Section 4.5.3.6"
       ::= { dot1dStp 11 }





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   dot1dStpBridgeMaxAge OBJECT-TYPE
       SYNTAX  Timeout (600..4000)
       ACCESS  read-write
       STATUS  mandatory
       DESCRIPTION
               "The value that all bridges use for MaxAge when
               this bridge is acting as the root.  Note that
               802.1d/D9 specifies that the range for this
               parameter is related to the value of
               dot1dStpBridgeHelloTime. The granularity of this
               timer is specified by 802.1d/D9 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
               "P802.1d/D9, July 14, 1989: Section 4.5.3.8"
       ::= { dot1dStp 12 }

   dot1dStpBridgeHelloTime OBJECT-TYPE
       SYNTAX  Timeout (100..1000)
       ACCESS  read-write
       STATUS  mandatory
       DESCRIPTION
               "The value that all bridges use for HelloTime when
               this bridge is acting as the root.  The
               granularity of this timer is specified by
               802.1d/D9 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
               "P802.1d/D9, July 14, 1989: Section 4.5.3.9"
       ::= { 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/D9 specifies that the range for this
               parameter is related to the value of
               dot1dStpBridgeMaxAge.  The granularity of this
               timer is specified by 802.1d/D9 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



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               "P802.1d/D9, July 14, 1989: Section 4.5.3.10"
       ::= { dot1dStp 14 }


   -- 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



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       }

   dot1dStpPort OBJECT-TYPE
       SYNTAX  INTEGER
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
               "The port number of the port for which this entry
               contains Spanning Tree Protocol management
               information."
       REFERENCE
               "P802.1d/D9, July 14, 1989: 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
               "P802.1d/D9, July 14, 1989: Section 4.5.5.1"
       ::= { dot1dStpPortEntry 2 }