isisCircLevelWideMetric OBJECT-TYPE
        SYNTAX IsisWideMetric
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION
            "The wide metric value of this circuit for this level."
        DEFVAL { 10 }
    ::= { isisCircLevelEntry 3 }

    isisCircLevelISPriority OBJECT-TYPE
        SYNTAX IsisISPriority
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION
            "The priority for becoming the LAN-Designated
             Intermediate System at this level."
        REFERENCE "{ISIS.aoi l2IntermediateSystemPriority (73)}"
        DEFVAL { 64 }
    ::= { isisCircLevelEntry 4 }

    isisCircLevelIDOctet OBJECT-TYPE
        SYNTAX Unsigned32(0..255)
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "A one-byte identifier for the circuit selected by the
             Intermediate System.

             On point-to-point circuits, the value is used as the Local
             Circuit ID in point-to-point IIH PDUs transmitted on this
             circuit.  In this case, values of isisCircLevelIDOctet do
             not need to be unique.

             For broadcast circuits, the value is used to generate the
             LAN ID that will be used if this Intermediate System is
             elected as the Designated IS on this circuit.  The value
             is required to differ on LANs where the Intermediate System
             is the Designated Intermediate System."
    ::= { isisCircLevelEntry 5 }

    isisCircLevelID OBJECT-TYPE
        SYNTAX IsisCircuitID
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "On a point-to-point circuit with a fully initialized
             adjacency to a peer IS, the value of this object is
             the circuit ID negotiated during adjacency initialization.

             On a point to point circuit without such an adjacency,
             the value is the concatenation of the local system ID
             and the one-byte isisCircLevelIDOctet for this circuit,
             i.e., the value that would be proposed for the circuit ID.
             On other circuit types, the value returned is the zero-
             length OCTET STRING."
        REFERENCE "{ISIS.aoi ptPtCircuitID (51)}"
    ::= { isisCircLevelEntry 6 }

    isisCircLevelDesIS OBJECT-TYPE
        SYNTAX IsisCircuitID
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The ID of the LAN-Designated Intermediate System
             on this circuit at this level.  If, for any reason,
             this system is not partaking in the relevant
             Designated Intermediate System election process,
             then the value returned is the zero-length OCTET STRING."
        REFERENCE "{ISIS.aoi l2DesignatedIntermediateSystem (75)}"
    ::= { isisCircLevelEntry 7 }

    isisCircLevelHelloMultiplier OBJECT-TYPE
        SYNTAX Unsigned32 (2..100)
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION
            "This value is multiplied by the corresponding HelloTimer,
             and the result in seconds (rounded up) is used as the
             holding time in transmitted hellos, to be used by
             receivers of hello packets from this IS."
        REFERENCE "{ISIS.aoi iSISHelloTimer (45)}"
        DEFVAL { 10 }
    ::= { isisCircLevelEntry 8 }

    isisCircLevelHelloTimer OBJECT-TYPE
        SYNTAX Unsigned32 (10..600000)
        UNITS "milliseconds"
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION
            "Maximum period, in milliseconds, between IIH PDUs
             on multiaccess networks at this level for LANs.
             The value at L1 is used as the period between
             Hellos on L1L2 point-to-point circuits.  Setting
             this value at level 2 on an L1L2 point-to-point
             circuit will result in an error of InconsistentValue.

             This object follows the ResettingTimer behavior."
        REFERENCE "{ISIS.aoi iSISHelloTimer (45)}"
        DEFVAL { 3000 }
    ::= { isisCircLevelEntry 9 }

    isisCircLevelDRHelloTimer OBJECT-TYPE
        SYNTAX Unsigned32 (10..120000)
        UNITS "milliseconds"
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION
            "Period, in milliseconds, between Hello PDUs on
             multiaccess networks when this IS is the Designated
             Intermediate System.  This object follows the
             ResettingTimer behavior."
        REFERENCE "{ISIS.aoi iSISHelloTimer (45)}"
        DEFVAL { 1000 }
    ::= { isisCircLevelEntry 10 }

    isisCircLevelLSPThrottle OBJECT-TYPE
        SYNTAX IsisUnsigned16TC (1..65535)
        UNITS "milliseconds"
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION
            "Minimal interval of time, in milliseconds, between
             transmissions of LSPs on an interface at this level."
        REFERENCE
            "{ISIS.aoi minimumBroadcastLSPTransmissionInterval (5)}"
        DEFVAL { 30 }
    ::= { isisCircLevelEntry 11 }

    isisCircLevelMinLSPRetransInt OBJECT-TYPE
        SYNTAX Unsigned32 (1..300)
        UNITS "seconds"
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION
            "Minimum interval, in seconds, between re-transmission of
             an LSP at this level.  This object follows the
             ResettingTimer behavior.

             Note that isisCircLevelLSPThrottle controls
             how fast we send back-to-back LSPs.  This variable
             controls how fast we re-send the same LSP."
        REFERENCE "{ISIS.aoi minimumLSPTransmissionInterval (5)}"
        DEFVAL { 5 }
    ::= { isisCircLevelEntry 12 }

    isisCircLevelCSNPInterval OBJECT-TYPE
        SYNTAX Unsigned32 (1..600)
        UNITS "seconds"
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION
            "Interval of time, in seconds, between periodic
             transmission of a complete set of CSNPs on
             multiaccess networks if this router is the
             designated router at this level.
             This object follows the ResettingTimer behavior."
        REFERENCE "{ISIS.aoi completeSNPInterval (8)}"
        DEFVAL { 10 }
    ::= { isisCircLevelEntry 13 }

    isisCircLevelPartSNPInterval OBJECT-TYPE
        SYNTAX Unsigned32 (1..120)
        UNITS "seconds"
        MAX-ACCESS read-write
        STATUS current
        DESCRIPTION
            "Minimum interval, in seconds, between sending Partial
             Sequence Number PDUs at this level.  This object
             follows the ResettingTimer behavior."
        REFERENCE "{ISIS.aoi partialSNPInterval (14)}"
        DEFVAL { 2 }
    ::= { isisCircLevelEntry 14 }

-- isisSystemCounterTable keeps track of system-wide events.

    isisSystemCounterTable OBJECT-TYPE
        SYNTAX SEQUENCE OF IsisSystemCounterEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "System-wide counters for this Intermediate System."
    ::= { isisCounters 1 }

    isisSystemCounterEntry OBJECT-TYPE
        SYNTAX IsisSystemCounterEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "System-wide IS-IS counters."
        INDEX { isisSysStatLevel }
    ::= { isisSystemCounterTable 1 }

    IsisSystemCounterEntry ::=

        SEQUENCE {
            isisSysStatLevel
                IsisISLevel,
            isisSysStatCorrLSPs
                Counter32,
            isisSysStatAuthTypeFails
                Counter32,
            isisSysStatAuthFails
                Counter32,
            isisSysStatLSPDbaseOloads
                Counter32,
            isisSysStatManAddrDropFromAreas
                Counter32,
            isisSysStatAttmptToExMaxSeqNums
                Counter32,
            isisSysStatSeqNumSkips
                Counter32,
            isisSysStatOwnLSPPurges
                Counter32,
            isisSysStatIDFieldLenMismatches
                Counter32,
            isisSysStatPartChanges
                Counter32,
            isisSysStatSPFRuns
                Counter32,
            isisSysStatLSPErrors
                Counter32
        }

    isisSysStatLevel OBJECT-TYPE
        SYNTAX IsisISLevel
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "The level that this entry describes."
    ::= { isisSystemCounterEntry 1 }

    isisSysStatCorrLSPs OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of corrupted in-memory frames"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Number of corrupted in-memory LSPs detected.

             LSPs received from the wire with a bad checksum
             are silently dropped and are not counted.

             LSPs received from the wire with parse errors
             are counted by isisSysStatLSPErrors."
        REFERENCE "{ISIS.aoi corruptedLSPsDetected (19)}"
    ::= { isisSystemCounterEntry 2 }

    isisSysStatAuthTypeFails OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of frames with authentication type mismatches"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of authentication type mismatches recognized
             by this Intermediate System."
    ::= { isisSystemCounterEntry 3 }

    isisSysStatAuthFails OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of frames with authentication key failures"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of authentication key failures recognized
             by this Intermediate System."
    ::= { isisSystemCounterEntry 4 }

    isisSysStatLSPDbaseOloads OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Number of times the LSP database has become
             overloaded."
        REFERENCE "{ISIS.aoi lSPL1DatabaseOverloads (20)}"
    ::= { isisSystemCounterEntry 5 }

    isisSysStatManAddrDropFromAreas OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Number of times a manual address has been dropped from
             the area."
        REFERENCE "{ISIS.aoi manualAddressesDroppedFromArea (21)}"
    ::= { isisSystemCounterEntry 6 }

    isisSysStatAttmptToExMaxSeqNums OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only

        STATUS current
        DESCRIPTION
            "Number of times the IS has attempted to exceed the
             maximum sequence number."
        REFERENCE
            "{ISIS.aoi attemptsToExceedmaximumSequenceNumber (22)}"
    ::= { isisSystemCounterEntry 7 }

    isisSysStatSeqNumSkips OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Number of times a sequence number skip has occurred."
        REFERENCE "{ISIS.aoi sequenceNumberSkips (23)}"
    ::= { isisSystemCounterEntry 8 }

    isisSysStatOwnLSPPurges OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Number of times a zero-aged copy of the system's own LSP
             is received from some other node."
        REFERENCE "{ISIS.aoi ownLSPPurges (24)}"
    ::= { isisSystemCounterEntry 9 }

    isisSysStatIDFieldLenMismatches OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of frames with ID length mismatches"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Number of times a PDU is received with a different value
             for ID field length from that of the receiving system."
        REFERENCE "{ISIS.aoi iDFieldLengthMismatches (25)}"
    ::= { isisSystemCounterEntry 10 }

    isisSysStatPartChanges OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Partition changes."
    ::= { isisSystemCounterEntry 11 }

    isisSysStatSPFRuns OBJECT-TYPE
        SYNTAX Counter32

        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Number of times we ran SPF at this level."
    ::= { isisSystemCounterEntry 12 }

    isisSysStatLSPErrors OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of frames with errors that we have received"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Number of LSPs with errors we have received."
    ::= { isisSystemCounterEntry 13 }

-- isisCircuitCounterTable keeps track of events
-- specific to a circuit and a level

    isisCircuitCounterTable OBJECT-TYPE
        SYNTAX SEQUENCE OF IsisCircuitCounterEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Circuit specific counters for this
             Intermediate System."
    ::= { isisCounters 2 }

    isisCircuitCounterEntry OBJECT-TYPE
        SYNTAX IsisCircuitCounterEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "An isisCircuitCounterEntry exists for each circuit
             used by Integrated IS-IS on this system."
        INDEX { isisCircIndex,
                isisCircuitType }
    ::= { isisCircuitCounterTable 1 }

    IsisCircuitCounterEntry ::= SEQUENCE {
          isisCircuitType
              INTEGER,
          isisCircAdjChanges
              Counter32,
          isisCircNumAdj
              Unsigned32,
          isisCircInitFails
              Counter32,
          isisCircRejAdjs

              Counter32,
          isisCircIDFieldLenMismatches
              Counter32,
          isisCircMaxAreaAddrMismatches
              Counter32,
          isisCircAuthTypeFails
              Counter32,
          isisCircAuthFails
              Counter32,
          isisCircLANDesISChanges
              Counter32
       }

    isisCircuitType OBJECT-TYPE
        SYNTAX INTEGER
            {
                lanlevel1(1),
                lanlevel2(2),
                p2pcircuit(3)
            }
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "What type of circuit saw these counts?

             The point-to-point Hello PDU includes
             both L1 and L2, and ISs form a single
             adjacency on point-to-point links.
             Thus, we combine counts on
             point-to-point links into one group."
    ::= { isisCircuitCounterEntry 1 }

    isisCircAdjChanges OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of times an adjacency state change has
             occurred on this circuit."
        REFERENCE "{ISIS.aoi changesInAdjacencyState (40)}"
    ::= { isisCircuitCounterEntry 2 }

    isisCircNumAdj OBJECT-TYPE
        SYNTAX Unsigned32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of adjacencies on this circuit."

        REFERENCE "{ISIS.aoi changesInAdjacencyState (40)}"
    ::= { isisCircuitCounterEntry 3 }

    isisCircInitFails OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of times initialization of this circuit has
             failed.  This counts events such as PPP NCP failures.
             Failures to form an adjacency are counted by
             isisCircRejAdjs."
    ::= { isisCircuitCounterEntry 4 }

    isisCircRejAdjs OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of times an adjacency has been rejected on
             this circuit."
        REFERENCE "{ISIS.aoi rejectedAdjacencies (42)}"
    ::= { isisCircuitCounterEntry 5 }

    isisCircIDFieldLenMismatches OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of frames with ID field length mismatch"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of times an IS-IS control PDU with an ID
             field length different from that for this system has been
             received."
        REFERENCE "{ISIS.aoi iDFieldLengthMismatches (25)}"
    ::= { isisCircuitCounterEntry 6 }

    isisCircMaxAreaAddrMismatches OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of times an IS-IS control PDU with a
             max area address field different from that for this
             system has been received."
        REFERENCE "{ISIS.aoi iDFieldLengthMismatches (25)}"
    ::= { isisCircuitCounterEntry 7 }

    isisCircAuthTypeFails OBJECT-TYPE

        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of times an IS-IS control PDU with
             an auth type field different from that for this
             system has been received."
    ::= { isisCircuitCounterEntry 8 }

    isisCircAuthFails OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of times an IS-IS control PDU with
             the correct auth type has failed to pass authentication
             validation."
    ::= { isisCircuitCounterEntry 9 }

    isisCircLANDesISChanges OBJECT-TYPE
        SYNTAX Counter32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of times the Designated IS has changed
             on this circuit at this level.  If the circuit is
             point to point, this count is zero."
    ::= { isisCircuitCounterEntry 10 }

-- isisPacketCounterTable keeps track of the number of IS-IS
-- control packets sent and received at each level

    isisPacketCounterTable OBJECT-TYPE
        SYNTAX SEQUENCE OF IsisPacketCounterEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Information about IS-IS protocol traffic at one level,
             on one circuit, in one direction."
    ::= { isisCounters 3 }

    isisPacketCounterEntry OBJECT-TYPE
        SYNTAX IsisPacketCounterEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Information about IS-IS protocol traffic at one level,
             on one circuit, in one direction."

        INDEX { isisCircIndex,
                isisPacketCountLevel,
                isisPacketCountDirection }
    ::= { isisPacketCounterTable 1 }

    IsisPacketCounterEntry ::=
        SEQUENCE {
            isisPacketCountLevel
                IsisISLevel,
            isisPacketCountDirection
                INTEGER,
            isisPacketCountIIHello
                Counter32,
            isisPacketCountISHello
                Counter32,
            isisPacketCountESHello
                Counter32,
            isisPacketCountLSP
                Counter32,
            isisPacketCountCSNP
                Counter32,
            isisPacketCountPSNP
                Counter32,
            isisPacketCountUnknown
                Counter32
    }

    isisPacketCountLevel OBJECT-TYPE
        SYNTAX IsisISLevel
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "The level at which these PDU counts have been collected."
    ::= { isisPacketCounterEntry 1 }

    isisPacketCountDirection OBJECT-TYPE
        SYNTAX INTEGER
            {
                sending(1),
                receiving(2)
            }
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Were we sending or receiving these PDUs?"
    ::= { isisPacketCounterEntry 2 }

    isisPacketCountIIHello OBJECT-TYPE

        SYNTAX Counter32
        UNITS "Number of IS-IS Hellos frames seen in this direction
              at this level"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of IS-IS Hello PDUs seen in this
             direction at this level.

             Point-to-Point IIH PDUs are counted at
             the lowest enabled level: at L1 on L1 or L1L2 circuits,
             and at L2 otherwise."
        REFERENCE "{ISIS.aoi iSISControlPDUsSent (43)}"
    ::= { isisPacketCounterEntry 3 }

    isisPacketCountISHello OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of ES-IS frames seen in this direction at
             this level."
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of ES-IS Hello PDUs seen in this
             direction.  ISH PDUs are counted at the
             lowest enabled level: at L1 on L1 or L1L2
             circuits, and at L2 otherwise."
    ::= { isisPacketCounterEntry 4 }

    isisPacketCountESHello OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of ES Hello frames seen in this direction at
             this level"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of ES Hello PDUs seen in this
             direction.  ESH PDUs are counted at the
             lowest enabled level: at L1 on L1 or L1L2
             circuits, and at L2 otherwise."
    ::= { isisPacketCounterEntry 5 }

    isisPacketCountLSP OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of IS-IS LSP frames seen in this direction at
             this level"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION

            "The number of IS-IS LSPs seen in this
             direction at this level."
        REFERENCE "{ISIS.aoi iSISControlPDUsSent (43)}"
    ::= { isisPacketCounterEntry 6 }

    isisPacketCountCSNP OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of IS-IS CSNP frames seen in this direction at
             this level"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of IS-IS CSNPs seen in this
             direction at this level."
        REFERENCE "{ISIS.aoi iSISControlPDUsSent (43)}"
    ::= { isisPacketCounterEntry 7 }

    isisPacketCountPSNP OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of IS-IS PSNP frames seen in this direction at
             this level"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of IS-IS PSNPs seen in this
             direction at this level."
        REFERENCE "{ISIS.aoi iSISControlPDUsSent (43)}"
    ::= { isisPacketCounterEntry 8 }

    isisPacketCountUnknown OBJECT-TYPE
        SYNTAX Counter32
        UNITS "Number of unknown IS-IS frames seen at this level"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The number of unknown IS-IS PDUs seen
             at this level."
        REFERENCE "{ISIS.aoi iSISControlPDUsSent (43)}"
    ::= { isisPacketCounterEntry 9 }

-- The IS Adjacency Table
--
-- Each adjacency to an IS corresponds to one entry in this
-- table.

    isisISAdjTable OBJECT-TYPE
        SYNTAX SEQUENCE OF IsisISAdjEntry
        MAX-ACCESS not-accessible

        STATUS current
        DESCRIPTION
            "The table of adjacencies to Intermediate Systems."
    ::= { isisISAdj 1 }

    isisISAdjEntry OBJECT-TYPE
        SYNTAX IsisISAdjEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Each entry corresponds to one adjacency to an
             Intermediate System on this system.

             Dynamically learned rows do not survive an agent reboot."
        INDEX { isisCircIndex,
                isisISAdjIndex }
    ::= { isisISAdjTable 1 }

    IsisISAdjEntry ::=
        SEQUENCE {
            isisISAdjIndex
                Unsigned32,
            isisISAdjState
                INTEGER,
            isisISAdj3WayState
                INTEGER,
            isisISAdjNeighSNPAAddress
                IsisOSINSAddress,
            isisISAdjNeighSysType
                INTEGER,
            isisISAdjNeighSysID
                IsisSystemID,
            isisISAdjNbrExtendedCircID
                Unsigned32,
            isisISAdjUsage
                IsisLevel,
            isisISAdjHoldTimer
                IsisUnsigned16TC,
            isisISAdjNeighPriority
                IsisISPriority,
            isisISAdjLastUpTime
                TimeStamp
      }

    isisISAdjIndex OBJECT-TYPE
        SYNTAX Unsigned32(1..4294967295)
        MAX-ACCESS not-accessible
        STATUS current

        DESCRIPTION
            "A unique value identifying the IS adjacency from all
             other such adjacencies on this circuit.  This value is
             automatically assigned by the system when the adjacency
             is created."
    ::= { isisISAdjEntry 1 }

    isisISAdjState OBJECT-TYPE
        SYNTAX INTEGER
            {
                 down (1),
                 initializing (2),
                 up (3),
                 failed(4)
            }
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The state of the adjacency."
        REFERENCE "{ISIS.aoi adjacencyState (78)}"
    ::= { isisISAdjEntry 2 }

    isisISAdj3WayState OBJECT-TYPE
        SYNTAX INTEGER
            {
                 up (0),
                 initializing (1),
                 down (2),
                 failed (3)
            }
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The 3Way state of the adjacency.  These are picked
             to match the historical on-the-wire representation
             of the 3Way state and are not intended to match
             isisISAdjState."
        REFERENCE "{ RFC 3373 }"
    ::= { isisISAdjEntry 3 }

    isisISAdjNeighSNPAAddress OBJECT-TYPE
        SYNTAX IsisOSINSAddress
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The SNPA address of the neighboring system."
        REFERENCE "{ISIS.aoi neighbourSNPAAddress (79)}"
    ::= { isisISAdjEntry 4 }

    isisISAdjNeighSysType OBJECT-TYPE
        SYNTAX INTEGER
            {
                l1IntermediateSystem(1),
                l2IntermediateSystem(2),
                l1L2IntermediateSystem(3),
                unknown(4)
            }
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The type of the neighboring system."
        REFERENCE "{ISIS.aoi neighbourSystemType (80)}"
    ::= { isisISAdjEntry 5 }

    isisISAdjNeighSysID OBJECT-TYPE
        SYNTAX IsisSystemID
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The system ID of the neighboring Intermediate
             System."
        REFERENCE "{ISIS.aoi neighbourSystemIds (83)}"
    ::= { isisISAdjEntry 6 }

    isisISAdjNbrExtendedCircID OBJECT-TYPE
        SYNTAX Unsigned32
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The 4-byte Extended Circuit ID learned from the
             Neighbor during 3-way handshake, or 0."
    ::= { isisISAdjEntry 7 }

    isisISAdjUsage OBJECT-TYPE
        SYNTAX IsisLevel
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "How is the adjacency used?  On a point-to-point link,
             this might be level1and2, but on a LAN, the usage will
             be level1 on the adjacency between peers at L1,
             and level2 for the adjacency between peers at L2."
        REFERENCE "{ISIS.aoi adjacencyUsage (82)}"
    ::= { isisISAdjEntry 8 }

    isisISAdjHoldTimer OBJECT-TYPE
        SYNTAX IsisUnsigned16TC (1..65535)

        UNITS "seconds"
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The holding time, in seconds, for this adjacency.
             This value is based on received IIH PDUs and
             the elapsed time since receipt."
        REFERENCE "{ISIS.aoi holdingTimer (85)}"
    ::= { isisISAdjEntry 9 }

    isisISAdjNeighPriority OBJECT-TYPE
        SYNTAX IsisISPriority
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "Priority of the neighboring Intermediate System for
             becoming the Designated Intermediate System."
        REFERENCE "{ISIS.aoi lANPriority (86)}"
    ::= { isisISAdjEntry 10 }

    isisISAdjLastUpTime OBJECT-TYPE
        SYNTAX TimeStamp
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "When the adjacency most recently entered the state 'up',
             measured in hundredths of a second since the last
             re-initialization of the network management subsystem.
             Holds 0 if the adjacency has never been in state 'up'."
    ::= { isisISAdjEntry 11 }

-- The IS Adjacency Area Address Table

-- The IS Adjacency Area Address Table contains the set of
-- Area Addresses of neighboring
-- Intermediate Systems as reported in IIH PDUs.

    isisISAdjAreaAddrTable OBJECT-TYPE
        SYNTAX SEQUENCE OF IsisISAdjAreaAddrEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "This table contains the set of Area Addresses of
             neighboring Intermediate Systems as reported in received
             IIH PDUs."
        REFERENCE "{ISIS.aoi areaAddressesOfNeighbour (84)}"
    ::= { isisISAdj 2 }

    isisISAdjAreaAddrEntry OBJECT-TYPE
        SYNTAX IsisISAdjAreaAddrEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Each entry contains one Area Address reported by a
             neighboring Intermediate System in its IIH PDUs.

             Dynamically learned rows do not survive an agent reboot."
        INDEX { isisCircIndex,
                isisISAdjIndex,
                isisISAdjAreaAddrIndex }
    ::= { isisISAdjAreaAddrTable 1 }

    IsisISAdjAreaAddrEntry ::=
        SEQUENCE {
            isisISAdjAreaAddrIndex
                Unsigned32,
            isisISAdjAreaAddress
                IsisOSINSAddress
            }

    isisISAdjAreaAddrIndex OBJECT-TYPE
        SYNTAX Unsigned32(1..4294967295)
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "An index for the areas associated with one neighbor.
             This provides a simple way to walk the table."
    ::= { isisISAdjAreaAddrEntry 1 }

    isisISAdjAreaAddress OBJECT-TYPE
        SYNTAX IsisOSINSAddress
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "One Area Address as reported in IIH PDUs received from
             the neighbor."
    ::= { isisISAdjAreaAddrEntry 2 }

-- The IS Adjacency IP Address Table

-- The IS Adjacency IP Address Table contains the
-- set of IP Addresses of neighboring Intermediate Systems
-- as reported in received IIH PDUs.

    isisISAdjIPAddrTable OBJECT-TYPE
        SYNTAX SEQUENCE OF IsisISAdjIPAddrEntry

        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "This table contains the set of IP Addresses of
             neighboring Intermediate Systems as reported in received
             IIH PDUs."
    ::= { isisISAdj 3 }

    isisISAdjIPAddrEntry OBJECT-TYPE
        SYNTAX IsisISAdjIPAddrEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Each entry contains one IP Address reported by a
             neighboring Intermediate System in its IIH PDUs.

             Dynamically learned rows do not survive an agent reboot."
        INDEX { isisCircIndex,
                isisISAdjIndex,
                isisISAdjIPAddrIndex
                }
    ::= { isisISAdjIPAddrTable 1 }

    IsisISAdjIPAddrEntry ::=
        SEQUENCE {
            isisISAdjIPAddrIndex
                Unsigned32,
            isisISAdjIPAddrType
                 InetAddressType,
            isisISAdjIPAddrAddress
                InetAddress
        }

    isisISAdjIPAddrIndex OBJECT-TYPE
        SYNTAX Unsigned32(1..4294967295)
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "An index to this table that identifies the IP addresses
             to which this entry belongs."
    ::= { isisISAdjIPAddrEntry 1 }

    isisISAdjIPAddrType OBJECT-TYPE
        SYNTAX InetAddressType
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "The type of one IP Address as reported in IIH PDUs

             received from the neighbor."
    ::= { isisISAdjIPAddrEntry 2 }

    isisISAdjIPAddrAddress OBJECT-TYPE
        SYNTAX InetAddress
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "One IP Address as reported in IIH PDUs received from the
             neighbor.

             The type of this address is determined by the value of
             the isisISAdjIPAddrType object."
    ::= { isisISAdjIPAddrEntry 3 }

-- The IS Adjacency Protocol Supported Table
--
-- The IS Adjacency Protocol Supported Table contains the set of
-- protocols supported by neighboring
-- Intermediate Systems as reported in received IIH PDUs.

    isisISAdjProtSuppTable OBJECT-TYPE
        SYNTAX SEQUENCE OF IsisISAdjProtSuppEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "This table contains the set of protocols supported by
             neighboring Intermediate Systems as reported in received
             IIH PDUs."
    ::= { isisISAdj 4 }

    isisISAdjProtSuppEntry OBJECT-TYPE
        SYNTAX IsisISAdjProtSuppEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Each entry contains one protocol supported by a
             neighboring Intermediate System as reported in its IIH
             PDUs.

             Dynamically learned rows do not survive an agent reboot."
        INDEX {  isisCircIndex,
                 isisISAdjIndex,
                 isisISAdjProtSuppProtocol }
    ::= { isisISAdjProtSuppTable 1 }

    IsisISAdjProtSuppEntry ::=
        SEQUENCE {

            isisISAdjProtSuppProtocol
                IsisSupportedProtocol
        }

    isisISAdjProtSuppProtocol OBJECT-TYPE
        SYNTAX IsisSupportedProtocol
        MAX-ACCESS read-only
        STATUS current
        DESCRIPTION
            "One supported protocol as reported in IIH PDUs received
             from the neighbor."
    ::= { isisISAdjProtSuppEntry 1 }

-- The Reachable Address Group
--
-- The Reachable Address Table
-- Each entry records information about a reachable address
-- (NSAP or address prefix) manually configured on the system
-- or learned through another protocol.

    isisRATable OBJECT-TYPE
        SYNTAX SEQUENCE OF IsisRAEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "The table of Reachable Addresses to NSAPs or Address
             Prefixes."
    ::= { isisReachAddr 1 }

    isisRAEntry OBJECT-TYPE
        SYNTAX IsisRAEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Each entry defines a configured Reachable Address
             to an NSAP or Address Prefix.

             Dynamically created rows MUST survive an agent reboot."
        INDEX { isisCircIndex,
                isisRAIndex }
    ::= { isisRATable 1 }

    IsisRAEntry ::=
        SEQUENCE {
            isisRAIndex
                Unsigned32,
            isisRAExistState
                RowStatus,

            isisRAAdminState
                IsisAdminState,
            isisRAAddrPrefix
                IsisOSINSAddress,
            isisRAMapType
                INTEGER,
            isisRAMetric
                IsisDefaultMetric,
            isisRAMetricType
                IsisMetricType,
            isisRASNPAAddress
                IsisOSINSAddress,
            isisRASNPAMask
                IsisOSINSAddress,
            isisRASNPAPrefix
                IsisOSINSAddress,
            isisRAType
                INTEGER
        }

    isisRAIndex OBJECT-TYPE
        SYNTAX Unsigned32(1..4294967295)
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "The identifier for this isisRAEntry.  This value must be
             unique amongst all Reachable Addresses on the same parent
             Circuit."
    ::= { isisRAEntry 1 }

    isisRAExistState OBJECT-TYPE
        SYNTAX RowStatus
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "The existence state of this Reachable Address.  This
             object follows the ManualOrAutomatic behaviors.  Support
             for 'createAndWait' and 'notInService' is not required.

             A row entry cannot be modified when the value of this
             object is 'active'."
    ::= { isisRAEntry 2 }

    isisRAAdminState OBJECT-TYPE
        SYNTAX IsisAdminState
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION

            "The administrative state of the Reachable Address.  This
             object follows the ManualOrAutomatic behaviors."
        DEFVAL { off }
    ::= { isisRAEntry 3 }

    isisRAAddrPrefix OBJECT-TYPE
        SYNTAX IsisOSINSAddress
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "The destination of this Reachable Address.  This is an
             Address Prefix.  This object follows the
             ReplaceOnlyWhileDisabled and ManualOrAutomatic
             behaviors."
        REFERENCE "{ISIS.aoi addressPrefix (98)}"
    ::= { isisRAEntry 4 }

    isisRAMapType OBJECT-TYPE
        SYNTAX INTEGER
            {
                none (1),
                explicit (2),
                extractIDI (3),
                extractDSP (4)
            }
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "The type of mapping to be employed to ascertain the SNPA
             Address that should be used in forwarding PDUs for this
             Reachable Address prefix.  This object follows the
             ManualOrAutomatic behavior.  The following values of
             mapping type are defined:

                 none: The mapping is null because the neighbor SNPA is
                       implicit by nature of the subnetwork (e.g., a
                       point-to-point linkage).

                 explicit: The subnetwork addresses in the object
                       isisRASNPAAddress are to be used.

                 extractIDI: The SNPA is embedded in the IDI of
                       the destination NSAP Address.  The mapping
                       algorithm extracts the SNPA to be used
                       according to the format and encoding rules of
                       ISO8473/Add2.  This SNPA extraction algorithm can
                       be used in conjunction with Reachable Address
                       prefixes from the X.121, F.69, E.163, and E.164

                       addressing subdomains.

                 extractDSP: All, or a suffix, of the SNPA is embedded
                       in the DSP of the destination address.  This SNPA
                       extraction algorithm extracts the embedded
                       subnetwork addressing information by performing a
                       logical AND of the isisRASNPAMask object value
                       with the destination address.  The part of the
                       SNPA extracted from the destination NSAP is
                       appended to the isisRASNPAPrefix object value to
                       form the next hop subnetwork addressing
                       information."

        REFERENCE "{ISO10589-ISIS.aoi mappingType (107)}"
    ::= { isisRAEntry 5 }

    isisRAMetric OBJECT-TYPE
        SYNTAX IsisDefaultMetric
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "The metric value for reaching the specified
             prefix over this circuit.  This object follows the
             ManualOrAutomatic behavior."
        REFERENCE "{ISIS.aoi DefaultMetric (99)}"
        DEFVAL { 20 }
    ::= { isisRAEntry 6 }

    isisRAMetricType OBJECT-TYPE
        SYNTAX IsisMetricType
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "Indicates whether the metric is internal or
             external.  This object follows the ManualOrAutomatic
             behavior."
        REFERENCE "{ISIS.aoi DefaultMetricType (103)}"
        DEFVAL { internal }
    ::= { isisRAEntry 7 }

    isisRASNPAAddress OBJECT-TYPE
        SYNTAX IsisOSINSAddress
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "The SNPA Address to which a PDU may be forwarded in
             order to reach a destination that matches the address
             prefix of the Reachable Address.  This object follows the

             ManualOrAutomatic behavior."
        REFERENCE "{ISIS.aoi sNPAAddresses (109)}"
-- Note only one address may be specified per Reachable Address
-- in the MIB
        DEFVAL { ''H }
    ::= { isisRAEntry 8 }

    isisRASNPAMask OBJECT-TYPE
        SYNTAX IsisOSINSAddress
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "A bit mask with 1 bit indicating the positions in the
             effective destination address from which embedded SNPA
             information is to be extracted.  For the extraction, the
             first octet of the isisRASNPAMask object value is aligned
             with the first octet (AFI) of the NSAP Address.  If the
             isisRASNPAMask object value and NSAP Address are of
             different lengths, the shorter of the two is logically
             padded with zeros before performing the extraction.  This
             object follows the ManualOrAutomatic behavior."
        REFERENCE "{ISIS.aoi sNPAMask (122)}"
        DEFVAL { '00'H }
    ::= { isisRAEntry 9 }

    isisRASNPAPrefix OBJECT-TYPE
        SYNTAX IsisOSINSAddress
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "A fixed SNPA prefix for use when the isisRAMapType is
             extractDSP.  The SNPA Address to use is formed by
             concatenating the fixed SNPA prefix with a variable SNPA
             part that is extracted from the effective destination
             address.  For Reachable Address prefixes in which the
             entire SNPA is embedded in the DSP, the SNPA Prefix shall
             be null.  This object follows the ManualOrAutomatic
             behavior."
        REFERENCE "{ISIS.aoi sNPAPrefix (123)}"
        DEFVAL { '00'H }
    ::= { isisRAEntry 10 }

    isisRAType OBJECT-TYPE
        SYNTAX INTEGER
            {
                manual (1),
                automatic (2)
            }

        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "The type of Reachable address.  Those of type
             manual are created by the network manager.  Those
             of type automatic are created through propagation
             of routing information from another routing
             protocol (e.g., IDRP). "
        DEFVAL {manual}
    ::= {isisRAEntry 11 }


-- The IP Reachable Address Table

-- Each entry records information about one IP reachable
-- address manually configured on this system or learned from
-- another protocol.

    isisIPRATable OBJECT-TYPE
        SYNTAX SEQUENCE OF IsisIPRAEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "The table of IP Reachable Addresses to networks,
             subnetworks, or hosts either manually configured or
             learned from another protocol."
    ::= { isisIPReachAddr 1 }

    isisIPRAEntry OBJECT-TYPE
        SYNTAX IsisIPRAEntry
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Each entry defines an IP Reachable Address to a network,
             subnetwork, or host.

             Each IP Reachable Address may have multiple entries in the
             table, one for each equal cost path to the reachable
             address.

             Dynamically created rows MUST survive an agent reboot.

             Implementers need to be aware that if the total number
             of elements (octets or sub-identifiers) in
             isisIPRADestr, isisIPRADestPrefixLen, and
             isisIPRANextHopIndex is too great, then OIDs of column
             instances in this table will have more than 128
             subidentifiers and cannot be accessed using SNMPv1,

             SNMPv2c, or SNMPv3."
        INDEX {  isisSysLevelIndex,
                 isisIPRADestType,
                 isisIPRADest,
                 isisIPRADestPrefixLen,
                 isisIPRANextHopIndex }
    ::= { isisIPRATable 1 }

    IsisIPRAEntry ::=
        SEQUENCE {
            isisIPRADestType
                InetAddressType,
            isisIPRADest
                InetAddress,
            isisIPRADestPrefixLen
                InetAddressPrefixLength,
            isisIPRANextHopIndex
                Unsigned32,
            isisIPRANextHopType
                InetAddressType,
            isisIPRANextHop
                InetAddress,
            isisIPRAType
                INTEGER,
            isisIPRAExistState
                RowStatus,
            isisIPRAAdminState
                IsisAdminState,
            isisIPRAMetric
                IsisDefaultMetric,
            isisIPRAMetricType
                IsisMetricType,
            isisIPRAFullMetric
                IsisFullMetric,
            isisIPRASNPAAddress
                IsisOSINSAddress,
            isisIPRASourceType
                INTEGER
        }

    isisIPRADestType OBJECT-TYPE
        SYNTAX InetAddressType
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "The type of this IP Reachable Address."
    ::= { isisIPRAEntry 1 }

    isisIPRADest OBJECT-TYPE
        SYNTAX InetAddress
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "The destination of this IP Reachable Address.  This is
             a network address, subnetwork address, or host
             address.

             The type of this address is determined by the value of
             the isisIPRADestType object."

    ::= { isisIPRAEntry 2 }

    isisIPRADestPrefixLen OBJECT-TYPE
        SYNTAX InetAddressPrefixLength
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "The length of the IP Netmask for Reachability Address.

             The values for the index objects isisIPRADest and
             isisIPRADestPrefixLen must be consistent.  When the value
             of isisIPRADest (excluding the zone index, if one
             is present) is x, then the bitwise logical-AND
             of x with the value of the mask formed from the
             corresponding index object isisIPRADestPrefixLen MUST be
             equal to x.  If not, then the index pair is not
             consistent, and an inconsistentName error must be
             returned on SET or CREATE requests."
    ::= { isisIPRAEntry 3 }

    isisIPRANextHopIndex OBJECT-TYPE
        SYNTAX Unsigned32(1..4294967295)
        MAX-ACCESS not-accessible
        STATUS current
        DESCRIPTION
            "Index of next hop.  Used when there are multiple Equal
             Cost Multipath alternatives for the same destination."
    ::= { isisIPRAEntry 4 }

    isisIPRANextHopType OBJECT-TYPE
        SYNTAX InetAddressType
        MAX-ACCESS read-create
        STATUS current
        DESCRIPTION
            "The type of the IP next hop address."
    ::= { isisIPRAEntry 5 }