tech-invite   World Map     

IETF     RFCs     Groups     SIP     ABNFs    |    3GPP     Specs     Glossaries     Architecture     IMS     UICC    |    search

RFC 2024

 
 
 

Definitions of Managed Objects for Data Link Switching using SMIv2

Part 3 of 3, p. 44 to 90
Prev RFC Part

 


prevText      Top      Up      ToC       Page 44 
dlswIfSapList  OBJECT-TYPE
    SYNTAX     OCTET STRING  (SIZE(16))
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The SAP list indicates which SAPs are allowed to be
        data link switched through this interface.  This list
        has the same format described for dlswTConnConfigSapList.

        When changes to this object take effect is implementation-
        specific.  Turning off a particular SAP can destroy
        active circuits that are using that SAP.  An agent
        implementation may reject such changes until there are no
        active circuits if it so chooses.  In this case, it is up
        to the manager to close the circuits first, using
        dlswCircuitState.

        The DEFVAL below indicates support for SAPs 0, 4, 8, and C."
    DEFVAL  { 'AA000000000000000000000000000000'H }
    ::= { dlswIfEntry 3 }


-- *******************************************************************
-- DIRECTORY
-- Directory services caches the locations of MAC addresses
-- and NetBIOS names.  For resources which are attached via
-- local interfaces, the ifIndex may be cached, and for
-- resources which are reachable via a DLSw partner, the
-- transport address of the DLSw partner is cached.
-- *******************************************************************

-- -------------------------------------------------------------------
-- Directory Related Statistical Objects
-- -------------------------------------------------------------------
dlswDirStat     OBJECT IDENTIFIER ::= { dlswDirectory 1 }

dlswDirMacEntries  OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The current total number of entries in the dlswDirMacTable."
    ::= { dlswDirStat 1 }

dlswDirMacCacheHits  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current

Top      Up      ToC       Page 45 
    DESCRIPTION
       "The number of times a cache search for a particular MAC address
        resulted in success."
    ::= { dlswDirStat 2 }

dlswDirMacCacheMisses  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of times a cache search for a particular MAC address
        resulted in failure."
    ::= { dlswDirStat 3 }

dlswDirMacCacheNextIndex  OBJECT-TYPE
    SYNTAX     INTEGER (0..2147483647)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The next value of dlswDirMacIndex to be assigned by
        the agent.  A retrieval of this object atomically reserves
        the returned value for use by the manager to create a row
        in dlswDirMacTable.  This makes it possible for the agent
        to control the index space of the MAC address cache, yet
        allows the manager to administratively create new rows."
    ::= { dlswDirStat 4 }

dlswDirNBEntries  OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The current total number of entries in the dlswDirNBTable."
    ::= { dlswDirStat 5 }

dlswDirNBCacheHits  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of times a cache search for a particular NetBIOS
        name resulted in success."
    ::= { dlswDirStat 6 }

dlswDirNBCacheMisses  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current

Top      Up      ToC       Page 46 
    DESCRIPTION
       "The number of times a cache search for a particular NetBIOS
        name resulted in failure."
    ::= { dlswDirStat 7 }

dlswDirNBCacheNextIndex  OBJECT-TYPE
    SYNTAX     INTEGER (0..2147483647)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The next value of dlswDirNBIndex to be assigned by the
        agent.  A retrieval of this object atomically reserves
        the returned value for use by the manager to create
        a row in dlswDirNBTable.  This makes it possible for the
        agent to control the index space for the NetBIOS name
        cache, yet allows the manager to administratively
        create new rows."
    ::= { dlswDirStat 8 }

-- -------------------------------------------------------------------
-- Directory Cache
-- -------------------------------------------------------------------
dlswDirCache     OBJECT IDENTIFIER ::= { dlswDirectory 2 }

-- ...................................................................
-- Directory for MAC Addresses.
-- All Possible combinations of values of these objects.
--
--     EntryType   LocationType       Location        Status
--  -------------- ------------ ------------------ --------------
--  userConfigured    local     ifEntry or 0.0     reachable, or
--                                                 notReachable, or
--                                                 unknown
--  userConfigured    remote    TConnConfigEntry   reachable, or
--                                                 notReachable, or
--                                                 unknown
--  partnerCapExMsg   remote    TConnOperEntry     unknown
--  dynamic           local     ifEntry or 0.0     reachable
--  dynamic           remote    TConnOperEntry     reachable
--
-- ...................................................................
dlswDirMacTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswDirMacEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "This table contains locations of MAC addresses.
        They could be either verified or not verified,

Top      Up      ToC       Page 47 
        local or remote, and configured locally or learned
        from either Capabilities Exchange messages or
        directory searches."
    ::= { dlswDirCache 1 }

dlswDirMacEntry  OBJECT-TYPE
    SYNTAX     DlswDirMacEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "Indexed by dlswDirMacIndex."
    INDEX   { dlswDirMacIndex }
    ::= { dlswDirMacTable 1 }

DlswDirMacEntry ::= SEQUENCE {
    dlswDirMacIndex          INTEGER,
    dlswDirMacMac            MacAddressNC,
    dlswDirMacMask           MacAddressNC,
    dlswDirMacEntryType      INTEGER,
    dlswDirMacLocationType   INTEGER,
    dlswDirMacLocation       RowPointer,
    dlswDirMacStatus         INTEGER,
    dlswDirMacLFSize         LFSize,
    dlswDirMacRowStatus      RowStatus
    }

dlswDirMacIndex  OBJECT-TYPE
    SYNTAX     INTEGER (0..2147483647)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "Uniquely identifies a conceptual row of this table."
    ::= { dlswDirMacEntry 1 }

dlswDirMacMac  OBJECT-TYPE
    SYNTAX     MacAddressNC
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The MAC address, together with the dlswDirMacMask,
        specifies a set of MAC addresses that are defined or
        discovered through an interface or partner DLSw nodes."
    ::= { dlswDirMacEntry 2 }

dlswDirMacMask  OBJECT-TYPE
    SYNTAX     MacAddressNC
    MAX-ACCESS read-create
    STATUS     current

Top      Up      ToC       Page 48 
    DESCRIPTION
       "The MAC address mask, together with the dlswDirMacMac,
        specifies a set of MAC addresses that are defined or
        discovered through an interface or partner DLSw nodes."
    DEFVAL { 'FFFFFFFFFFFF'H }
    ::= { dlswDirMacEntry 3 }

dlswDirMacEntryType  OBJECT-TYPE
    SYNTAX     INTEGER  {
        other                    (1),
        userConfiguredPublic     (2),
        userConfiguredPrivate    (3),
        partnerCapExMsg          (4),
        dynamic                  (5)
    }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The cause of the creation of this conceptual row.
        It could be one of the three methods: (1) user
        configured, including via management protocol
        set operations, configuration file, command line
        or equivalent methods; (2) learned from the
        partner DLSw Capabilities Exchange messages;
        and (3) dynamic, e.g., learned from ICanReach
        messages, or LAN explorer frames.  Since only
        individual MAC addresses can be dynamically learned,
        dynamic entries will all have a mask of all FFs.

        The public versus private distinction for user-
        configured resources applies only to local resources
        (UC remote resources are private), and indicates
        whether that resource should be advertised in
        capabilities exchange messages sent by this node."
    DEFVAL { userConfiguredPublic }
    ::= { dlswDirMacEntry 4 }

dlswDirMacLocationType  OBJECT-TYPE
    SYNTAX     INTEGER  {
        other                 (1),
        local                 (2),
        remote                (3)
    }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The location of the resource (or a collection of
        resources using a mask) of this conceptual row

Top      Up      ToC       Page 49 
        is either (1) local - the resource is reachable
        via an interface, or (2) remote - the resource
        is reachable via a partner DLSw node (or a set
        of partner DLSw nodes)."
    DEFVAL { local }
    ::= { dlswDirMacEntry 5 }

dlswDirMacLocation  OBJECT-TYPE
    SYNTAX     RowPointer
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "Points to either the ifEntry, dlswTConnConfigEntry,
        dlswTConnOperEntry, 0.0, or something that is implementation
        specific.  It identifies the location of the MAC address
        (or the collection of MAC addresses.)"
    DEFVAL { null }
    ::= { dlswDirMacEntry 6 }

dlswDirMacStatus  OBJECT-TYPE
    SYNTAX     INTEGER  {
        unknown               (1),
        reachable             (2),
        notReachable          (3)
    }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "This object specifies whether DLSw currently believes
        the MAC address to be accessible at the specified location.
        The value `notReachable' allows a configured resource
        definition to be taken out of service when a search to
        that resource fails (avoiding a repeat of the search)."
    DEFVAL { unknown }
    ::= { dlswDirMacEntry 7 }

dlswDirMacLFSize  OBJECT-TYPE
    SYNTAX     LFSize
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The largest size of the MAC INFO field (LLC header and data)
        that a circuit to the MAC address can carry through this path."
    DEFVAL { lfs65535 }
    ::= { dlswDirMacEntry 8 }

dlswDirMacRowStatus  OBJECT-TYPE
    SYNTAX     RowStatus

Top      Up      ToC       Page 50 
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "This object is used by the manager to create
        or delete the row entry in the dlswDirMacTable
        following the RowStatus textual convention."
    ::= { dlswDirMacEntry 9 }

-- ...................................................................
-- Directory for NetBIOS Names
-- All Possible combinations of values of these objects.
--
--     EntryType   LocationType       Location        Status
--  -------------- ------------ ------------------ --------------
--  userConfigured    local     ifEntry or 0.0     reachable, or
--                                                 notReachable, or
--                                                 unknown
--  userConfigured    remote    TConnConfigEntry   reachable, or
--                                                 notReachable, or
--                                                 unknown
--  partnerCapExMsg   remote    TConnOperEntry     unknown
--  dynamic           local     ifEntry or 0.0     reachable
--  dynamic           remote    TConnOperEntry     reachable
--
-- ...................................................................
dlswDirNBTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswDirNBEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "This table contains locations of NetBIOS names.
        They could be either verified or not verified,
        local or remote, and configured locally or learned
        from either Capabilities Exchange messages or
        directory searches."
    ::= { dlswDirCache 2 }

dlswDirNBEntry  OBJECT-TYPE
    SYNTAX     DlswDirNBEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "Indexed by dlswDirNBIndex."
    INDEX   { dlswDirNBIndex }
    ::= { dlswDirNBTable 1 }

DlswDirNBEntry ::= SEQUENCE {
    dlswDirNBIndex           INTEGER,

Top      Up      ToC       Page 51 
    dlswDirNBName            NBName,
    dlswDirNBNameType        INTEGER,
    dlswDirNBEntryType       INTEGER,
    dlswDirNBLocationType    INTEGER,
    dlswDirNBLocation        RowPointer,
    dlswDirNBStatus          INTEGER,
    dlswDirNBLFSize          LFSize,
    dlswDirNBRowStatus       RowStatus
    }

dlswDirNBIndex  OBJECT-TYPE
    SYNTAX     INTEGER (0..2147483647)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "Uniquely identifies a conceptual row of this table."
    ::= { dlswDirNBEntry 1 }

dlswDirNBName  OBJECT-TYPE
    SYNTAX     NBName
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The NetBIOS name (including `any char' and `wildcard'
        characters) specifies a set of NetBIOS names that are
        defined or discovered through an interface or partner
        DLSw nodes."
    ::= { dlswDirNBEntry 2 }

dlswDirNBNameType  OBJECT-TYPE
    SYNTAX     INTEGER  {
        unknown       (1),
        individual    (2),
        group         (3)
    }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "Whether dlswDirNBName represents an (or a set of) individual
        or group NetBIOS name(s)."
    DEFVAL { unknown }
    ::= { dlswDirNBEntry 3 }

dlswDirNBEntryType  OBJECT-TYPE
    SYNTAX     INTEGER  {
        other                    (1),
        userConfiguredPublic     (2),
        userConfiguredPrivate    (3),

Top      Up      ToC       Page 52 
        partnerCapExMsg          (4),
        dynamic                  (5)
    }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The cause of the creation of this conceptual row.
        It could be one of the three methods: (1) user
        configured, including via management protocol
        set operations, configuration file, command line,
        or equivalent methods; (2) learned from the
        partner DLSw Capabilities Exchange messages;
        and (3) dynamic, e.g., learned from ICanReach
        messages, or test frames.  Since only actual
        NetBIOS names can be dynamically learned, dynamic
        entries will not contain any char or wildcard
        characters.

        The public versus private distinction for user-
        configured resources applies only to local resources
        (UC remote resources are private), and indicates
        whether that resource should be advertised in
        capabilities exchange messages sent by this node."
    DEFVAL { userConfiguredPublic }
    ::= { dlswDirNBEntry 4 }

dlswDirNBLocationType  OBJECT-TYPE
    SYNTAX     INTEGER  {
        other                 (1),
        local                 (2),
        remote                (3)
    }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The location of the resource (or a collection of resources
        using any char/wildcard characters) of this conceptual row
        is either (1) local - the resource is reachable via an
        interface, or (2) remote - the resource is reachable via a
        a partner DLSw node (or a set of partner DLSw nodes)."
    DEFVAL { local }
    ::= { dlswDirNBEntry 5 }

dlswDirNBLocation  OBJECT-TYPE
    SYNTAX     RowPointer
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION

Top      Up      ToC       Page 53 
       "Points to either the ifEntry, dlswTConnConfigEntry,
        dlswTConnOperEntry, 0.0, or something that is implementation
        specific.  It identifies the location of the NetBIOS name
        or the set of NetBIOS names."
    DEFVAL { null }
    ::= { dlswDirNBEntry 6 }

dlswDirNBStatus  OBJECT-TYPE
    SYNTAX     INTEGER  {
        unknown               (1),
        reachable             (2),
        notReachable          (3)
    }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "This object specifies whether DLSw currently believes
        the NetBIOS name to be accessible at the specified location.
        The value `notReachable' allows a configured resource
        definition to be taken out of service when a search to
        that resource fails (avoiding a repeat of the search)."
    DEFVAL { unknown }
    ::= { dlswDirNBEntry 7 }

dlswDirNBLFSize  OBJECT-TYPE
    SYNTAX     LFSize
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The largest size of the MAC INFO field (LLC header and data)
        that a circuit to the NB name can carry through this path."
    DEFVAL { lfs65535 }
    ::= { dlswDirNBEntry 8 }

dlswDirNBRowStatus  OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "This object is used by manager to create
        or delete the row entry in the dlswDirNBTable
        following the RowStatus textual convention."
    ::= { dlswDirNBEntry 9 }


-- -------------------------------------------------------------------
-- Resource Locations
-- -------------------------------------------------------------------

Top      Up      ToC       Page 54 
dlswDirLocate       OBJECT IDENTIFIER ::= { dlswDirectory 3 }

-- ...................................................................
-- Locate Entries in the dlswDirMacTable for a given MAC address
-- ...................................................................
dlswDirLocateMacTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswDirLocateMacEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "This table is used to retrieve all entries in the
        dlswDirMacTable that match a given MAC address,
        in the order of the best matched first, the
        second best matched second, and so on, till
        no more entries match the given MAC address."
    ::= { dlswDirLocate 1 }

dlswDirLocateMacEntry  OBJECT-TYPE
    SYNTAX     DlswDirLocateMacEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "Indexed by dlswDirLocateMacMac and dlswDirLocateMacMatch.
        The first object is the MAC address of interest, and
        the second object is the order in the list of all
        entries that match the MAC address."
    INDEX   { dlswDirLocateMacMac, dlswDirLocateMacMatch }
    ::= { dlswDirLocateMacTable 1 }

DlswDirLocateMacEntry ::= SEQUENCE {
    dlswDirLocateMacMac            MacAddressNC,
    dlswDirLocateMacMatch          INTEGER,
    dlswDirLocateMacLocation       RowPointer
    }

dlswDirLocateMacMac  OBJECT-TYPE
    SYNTAX     MacAddressNC
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The MAC address to be located."
    ::= { dlswDirLocateMacEntry 1 }

dlswDirLocateMacMatch  OBJECT-TYPE
    SYNTAX     INTEGER (1..255)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION

Top      Up      ToC       Page 55 
       "The order of the entries of dlswDirMacTable
        that match dlswDirLocateMacMac.  A value of
        one represents the entry that best matches the
        MAC address.  A value of two represents the second
        best matched entry, and so on."
    ::= { dlswDirLocateMacEntry 2 }

dlswDirLocateMacLocation  OBJECT-TYPE
    SYNTAX     RowPointer
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "Points to the dlswDirMacEntry."
    ::= { dlswDirLocateMacEntry 3 }

-- ...................................................................
-- Locate Entries in the dlswDirNBTable for a given NetBIOS name
-- ...................................................................
dlswDirLocateNBTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswDirLocateNBEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "This table is used to retrieve all entries in the
        dlswDirNBTable that match a given NetBIOS name,
        in the order of the best matched first, the
        second best matched second, and so on, till
        no more entries match the given NetBIOS name."
    ::= { dlswDirLocate 2 }

dlswDirLocateNBEntry  OBJECT-TYPE
    SYNTAX     DlswDirLocateNBEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "Indexed by dlswDirLocateNBName and dlswDirLocateNBMatch.
        The first object is the NetBIOS name of interest, and
        the second object is the order in the list of all
        entries that match the NetBIOS name."
    INDEX   { dlswDirLocateNBName, dlswDirLocateNBMatch }
    ::= { dlswDirLocateNBTable 1 }

DlswDirLocateNBEntry ::= SEQUENCE {
    dlswDirLocateNBName           NBName,
    dlswDirLocateNBMatch          INTEGER,
    dlswDirLocateNBLocation       RowPointer
    }

Top      Up      ToC       Page 56 
dlswDirLocateNBName  OBJECT-TYPE
    SYNTAX     NBName
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The NetBIOS name to be located (no any char or wildcards)."
    ::= { dlswDirLocateNBEntry 1 }

dlswDirLocateNBMatch  OBJECT-TYPE
    SYNTAX     INTEGER (1..255)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The order of the entries of dlswDirNBTable
        that match dlswDirLocateNBName.  A value of
        one represents the entry that best matches the
        NetBIOS name.  A value of two represents the second
        best matched entry, and so on."
    ::= { dlswDirLocateNBEntry 2 }

dlswDirLocateNBLocation  OBJECT-TYPE
    SYNTAX     RowPointer
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "Points to the dlswDirNBEntry."
    ::= { dlswDirLocateNBEntry 3 }


-- *******************************************************************
-- CIRCUIT
-- A circuit is the end-to-end association of two DLSw entities
-- through one or two DLSw nodes.  It is the concatenation of
-- two "data links", optionally with an intervening transport
-- connection. The origin of the circuit is the end station that
-- initiates the circuit.  The target of the circuit is the end
-- station that receives the initiation.
-- *******************************************************************

-- -------------------------------------------------------------------
-- Statistics Related to Circuits
-- -------------------------------------------------------------------
dlswCircuitStat      OBJECT IDENTIFIER ::= { dlswCircuit 1 }

dlswCircuitStatActives  OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current

Top      Up      ToC       Page 57 
    DESCRIPTION
       "The current number of circuits in dlswCircuitTable that are
        not in the disconnected state."
    ::= { dlswCircuitStat 1 }

dlswCircuitStatCreates  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The total number of entries ever added to dlswCircuitTable,
        or reactivated upon exiting `disconnected' state."
    ::= { dlswCircuitStat 2 }


-- -------------------------------------------------------------------
-- Circuit Table
--
-- This table is the DLSw entity's view of circuits.  There will be
-- a conceptual row in the table associated with each data link.
--
-- The chart below lists the various possible combinations of
-- origin and target MAC locations and the number of entries in
-- this Circuit Table:
--
--           number of       |    Origin End Station Location
--         entries in the    |--------------------------------------
--         Circuit Table     |  internal     local       remote
--    -----------------------|--------------------------------------
--     Target    |  internal |     NA          2           1
--     End       |  local    |     2           2           1
--     Station   |  remote   |     1           1           NA
--     Location  |           |
--
--     NA: Not applicable
--
--  Note:
--  (a) IfIndex and RouteInfo are applied only if location is local.
--  (b) TDomain and TAddr are applied only if location is remote.
--
-- Most of statistics related to circuits can be collected
-- from LLC-2 Link Station Table.
-- -------------------------------------------------------------------
dlswCircuitTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswCircuitEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION

Top      Up      ToC       Page 58 
       "This table is the circuit representation in the DLSw
        entity. Virtual data links are used to represent any internal
        end stations.  There is a conceptual row associated with
        each data link.  Thus, for circuits without an intervening
        transport connection, there are two conceptual rows
        for each circuit.

        The table consists of the circuits being established,
        established, and as an implementation option, circuits that
        have been disconnected.  For circuits carried over
        transport connections, an entry is created after
        the CUR_cs was sent or received.  For circuits between
        two locally attached devices, or internal virtual MAC
        addresses, an entry is created when the equivalent of
        CUR_cs sent/received status is reached.

        End station 1 (S1) and End station 2 (S2) are used to
        represent the two end stations of the circuit.
        S1 is always an end station which is locally attached.
        S2 may be locally attached or remote.  If it is locally
        attached, the circuit will be represented by two rows indexed
        by (A, B) and (B, A) where A & B are the relevant MACs/SAPs.

        The table may be used to store the causes of disconnection of
        circuits.  It is recommended that the oldest disconnected
        circuit entry be removed from this table when the memory
        space of disconnected circuits is needed."
    ::= { dlswCircuit 2 }

dlswCircuitEntry  OBJECT-TYPE
    SYNTAX     DlswCircuitEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       ""
    INDEX   { dlswCircuitS1Mac,
              dlswCircuitS1Sap,
              dlswCircuitS2Mac,
              dlswCircuitS2Sap }
    ::= { dlswCircuitTable 1 }

DlswCircuitEntry ::= SEQUENCE {
    dlswCircuitS1Mac                MacAddressNC,
    dlswCircuitS1Sap                OCTET STRING,
    dlswCircuitS1IfIndex            INTEGER,
    dlswCircuitS1DlcType            DlcType,
    dlswCircuitS1RouteInfo          OCTET STRING,
    dlswCircuitS1CircuitId          OCTET STRING,

Top      Up      ToC       Page 59 
    dlswCircuitS1Dlc                RowPointer,

    dlswCircuitS2Mac                MacAddressNC,
    dlswCircuitS2Sap                OCTET STRING,
    dlswCircuitS2Location           EndStationLocation,
    dlswCircuitS2TDomain            OBJECT IDENTIFIER,
    dlswCircuitS2TAddress           TAddress,
    dlswCircuitS2CircuitId          OCTET STRING,

    dlswCircuitOrigin               INTEGER,

    dlswCircuitEntryTime            TimeTicks,
    dlswCircuitStateTime            TimeTicks,
    dlswCircuitState                INTEGER,

    dlswCircuitPriority             INTEGER,

    dlswCircuitFCSendGrantedUnits   INTEGER,
    dlswCircuitFCSendCurrentWndw    INTEGER,
    dlswCircuitFCRecvGrantedUnits   INTEGER,
    dlswCircuitFCRecvCurrentWndw    INTEGER,
    dlswCircuitFCLargestRecvGranted Gauge32,
    dlswCircuitFCLargestSendGranted Gauge32,
    dlswCircuitFCHalveWndwSents     Counter32,
    dlswCircuitFCResetOpSents       Counter32,
    dlswCircuitFCHalveWndwRcvds     Counter32,
    dlswCircuitFCResetOpRcvds       Counter32,
    dlswCircuitDiscReasonLocal      INTEGER,
    dlswCircuitDiscReasonRemote     INTEGER,
    dlswCircuitDiscReasonRemoteData OCTET STRING
    }

-- ...................................................................
-- Information related to the End Station 1 (S1).
-- ...................................................................
dlswCircuitS1Mac  OBJECT-TYPE
    SYNTAX     MacAddressNC
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The MAC Address of End Station 1 (S1) used for this circuit."
    ::= { dlswCircuitEntry 1 }

dlswCircuitS1Sap  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE(1))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION

Top      Up      ToC       Page 60 
       "The SAP at End Station 1 (S1) used for this circuit."
    ::= { dlswCircuitEntry 2 }

dlswCircuitS1IfIndex  OBJECT-TYPE
    SYNTAX     INTEGER (0..2147483647)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The ifEntry index of the local interface through which S1
        can be reached."
    ::= { dlswCircuitEntry 3 }

dlswCircuitS1DlcType  OBJECT-TYPE
    SYNTAX     DlcType
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The DLC protocol in use between the DLSw node and S1."
    ::= { dlswCircuitEntry 4 }

dlswCircuitS1RouteInfo  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (0..30))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "If source-route bridging is in use between the DLSw
        node and S1, this is the routing information field
        describing the path between the two devices.
        Otherwise the value will be an OCTET STRING of
        zero length."
    ::= { dlswCircuitEntry 5 }

dlswCircuitS1CircuitId  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (0 | 8))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The Circuit ID assigned by this DLSw node to this circuit.
        The first four octets are the DLC port Id, and
        the second four octets are the Data Link Correlator.
        If the DLSw SSP was not used to establish this circuit,
        the value will be a string of zero length."
    ::= { dlswCircuitEntry 6 }

dlswCircuitS1Dlc  OBJECT-TYPE
    SYNTAX     RowPointer
    MAX-ACCESS read-only
    STATUS     current

Top      Up      ToC       Page 61 
    DESCRIPTION
       "Points to a conceptual row of the underlying DLC MIB,
        which could either be the standard MIBs (e.g., the SDLC),
        or an enterprise-specific DLC MIB."
    ::= { dlswCircuitEntry 7 }

-- ...................................................................
-- Information related to the End Station 2 (S2).
-- ...................................................................
dlswCircuitS2Mac  OBJECT-TYPE
    SYNTAX     MacAddressNC
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The MAC Address of End Station 2 (S2) used for this circuit."
    ::= { dlswCircuitEntry 8 }

dlswCircuitS2Sap  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE(1))
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The SAP at End Station 2 (S2) used for this circuit."
    ::= { dlswCircuitEntry 9 }

dlswCircuitS2Location  OBJECT-TYPE
    SYNTAX     EndStationLocation
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The location of End Station 2 (S2).
        If the location of End Station 2 is local, the
        interface information will be available in the
        conceptual row whose S1 and S2 are the S2 and
        the S1 of this conceptual row, respectively."
    ::= { dlswCircuitEntry 10 }

dlswCircuitS2TDomain  OBJECT-TYPE
    SYNTAX     OBJECT IDENTIFIER
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "If the location of End Station 2 is remote,
        this value is the transport domain of the
        transport protocol the circuit is running
        over.  Otherwise, the value is 0.0."
    ::= { dlswCircuitEntry 11 }

Top      Up      ToC       Page 62 
dlswCircuitS2TAddress  OBJECT-TYPE
    SYNTAX     TAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "If the location of End Station 2 is remote,
        this object contains the address of the partner
        DLSw, else it will be an OCTET STRING of zero length."
    ::= { dlswCircuitEntry 12 }

dlswCircuitS2CircuitId  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (0 | 8))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The Circuit ID assigned to this circuit by the partner
        DLSw node.  The first four octets are the DLC port Id, and
        the second four octets are the Data Link Correlator.
        If the DLSw SSP was not used to establish this circuit,
        the value will be a string of zero length."
    ::= { dlswCircuitEntry 13 }

-- ...................................................................
dlswCircuitOrigin  OBJECT-TYPE
    SYNTAX     INTEGER  {
        s1             (1),
        s2             (2)
    }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "This object specifies which of the two end stations
        initiated the establishment of this circuit."
    ::= { dlswCircuitEntry 14 }

-- ...................................................................
-- Operational information related to this circuit.
-- ...................................................................
dlswCircuitEntryTime  OBJECT-TYPE
    SYNTAX     TimeTicks
    UNITS      "hundredths of a second"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The amount of time (in hundredths of a second) since this
        circuit table conceptual row was created."
    ::= { dlswCircuitEntry 15 }

Top      Up      ToC       Page 63 
dlswCircuitStateTime  OBJECT-TYPE
    SYNTAX     TimeTicks
    UNITS      "hundredths of a second"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The amount of time (in hundredths of a second) since this
        circuit entered the current state."
    ::= { dlswCircuitEntry 16 }

dlswCircuitState  OBJECT-TYPE
    SYNTAX     INTEGER  {
        disconnected           (1),
        circuitStart           (2),
        resolvePending         (3),
        circuitPending         (4),
        circuitEstablished     (5),
        connectPending         (6),
        contactPending         (7),
        connected              (8),
        disconnectPending      (9),
        haltPending            (10),
        haltPendingNoack       (11),
        circuitRestart         (12),
        restartPending         (13)
    }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
       "The current state of this circuit.  The agent, implementation
        specific, may choose to keep entries for some period of time
        after circuit disconnect, so the manager can gather the time
        and cause of disconnection.

        While all of the specified values may be returned from a GET
        operation, the only SETable value is `disconnectPending'.
        When this value is set, DLSw should perform the appropriate
        action given its previous state (e.g., send HALT_DL if the
        state was `connected') to bring the circuit down to the
        `disconnected' state.  Both the partner DLSw and local end
        station(s) should be notified as appropriate.

        This MIB provides no facility to re-establish a disconnected
        circuit, because in DLSw this should be an end station-driven
        function."
    ::= { dlswCircuitEntry 17 }

dlswCircuitPriority  OBJECT-TYPE

Top      Up      ToC       Page 64 
    SYNTAX     INTEGER  {
        unsupported     (1),
        low             (2),
        medium          (3),
        high            (4),
        highest         (5)
    }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The transmission priority of this circuit as understood by
        this DLSw node.  This value is determined by the two DLSw
        nodes at circuit startup time.  If this DLSw node does not
        support DLSw circuit priority, the value `unsupported' should
        be returned."
    ::= { dlswCircuitEntry 18 }

-- ...................................................................
-- Pacing Objects:
-- These objects are applicable if DLSw is using the SSP circuit
-- pacing protocol to control the flow between the two data links
-- in this circuit.
-- ...................................................................
dlswCircuitFCSendGrantedUnits  OBJECT-TYPE
    SYNTAX     INTEGER (0..65535)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of paced SSP messages that this DLSw is currently
        authorized to send on this circuit before it must stop and
        wait for an additional flow control indication from the
        partner DLSw.

        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 19 }

dlswCircuitFCSendCurrentWndw  OBJECT-TYPE
    SYNTAX     INTEGER (0..65535)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The current window size that this DLSw is using in its role
        as a data sender.  This is the value by which this DLSw would
        increase the number of messages it is authorized to send, if
        it were to receive a flow control indication with the bits
        specifying `repeat window'.

Top      Up      ToC       Page 65 
        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 20 }

dlswCircuitFCRecvGrantedUnits  OBJECT-TYPE
    SYNTAX     INTEGER (0..65535)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The current number of paced SSP messages that this DLSw has
        authorized the partner DLSw to send on this circuit before
        the partner DLSw must stop and wait for an additional flow
        control indication from this DLSw.

        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 21 }

dlswCircuitFCRecvCurrentWndw  OBJECT-TYPE
    SYNTAX     INTEGER (0..65535)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The current window size that this DLSw is using in its role
        as a data receiver.  This is the number of additional paced
        SSP messages that this DLSw would be authorizing its DLSw
        partner to send, if this DLSw were to send a flow control
        indication with the bits specifying `repeat window'.

        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 22 }

dlswCircuitFCLargestRecvGranted  OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The largest receive window size granted by this DLSw during
        the current activation of this circuit.  This is not the
        largest number of messages granted at any time, but the
        largest window size as represented by FCIND operator bits.

        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 23 }

dlswCircuitFCLargestSendGranted  OBJECT-TYPE

Top      Up      ToC       Page 66 
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The largest send (with respect to this DLSw) window size
        granted by the partner DLSw during the current activation of
        this circuit.

        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 24 }

dlswCircuitFCHalveWndwSents  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of Halve Window operations this DLSw has sent on
        this circuit, in its role as a data receiver.

        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 25 }

dlswCircuitFCResetOpSents  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of Reset Window operations this DLSw has sent on
        this circuit, in its role as a data receiver.

        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 26 }

dlswCircuitFCHalveWndwRcvds  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of Halve Window operations this DLSw has received on
        this circuit, in its role as a data sender.

        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 27 }

Top      Up      ToC       Page 67 
dlswCircuitFCResetOpRcvds  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of Reset Window operations this DLSw has received on
        this circuit, in its role as a data sender.
        The value zero should be returned if this circuit is not
        running the DLSw pacing protocol."
    ::= { dlswCircuitEntry 28 }


-- ...................................................................
-- Information about the circuit disconnection
-- ...................................................................
dlswCircuitDiscReasonLocal  OBJECT-TYPE
    SYNTAX     INTEGER  {
        endStationDiscRcvd           (1),
        endStationDlcError           (2),
        protocolError                (3),
        operatorCommand              (4),
        haltDlRcvd                   (5),
        haltDlNoAckRcvd              (6),
        transportConnClosed          (7)
    }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The reason why this circuit was last disconnected, as seen
        by this DLSw node.

        This object is present only if the agent keeps circuit
        table entries around for some period after circuit disconnect."
    ::= { dlswCircuitEntry 29 }

dlswCircuitDiscReasonRemote  OBJECT-TYPE
    SYNTAX     INTEGER  {
        unknown                      (1),
        endStationDiscRcvd           (2),
        endStationDlcError           (3),
        protocolError                (4),
        operatorCommand              (5)
    }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The generic reason code why this circuit was last
        disconnected, as reported by the DLSw partner in a HALT_DL

Top      Up      ToC       Page 68 
        or HALT_DL_NOACK.  If the partner does not send a reason
        code in these messages, or the DLSw implementation does
        not report receiving one, the value `unknown' is returned.

        This object is present only if the agent keeps circuit table
        entries around for some period after circuit disconnect."
    ::= { dlswCircuitEntry 30 }

dlswCircuitDiscReasonRemoteData  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (0 | 4))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "Implementation-specific data reported by the DLSw partner in
        a HALT_DL or HALT_DL_NOACK, to help specify how and why this
        circuit was last disconnected.  If the partner does not send
        this data in these messages, or the DLSw implementation does
        not report receiving it, a string of zero length is returned.

        This object is present only if the agent keeps circuit table
        entries around for some period after circuit disconnect."
    ::= { dlswCircuitEntry 31 }


-- ...................................................................
-- Statistics related to this circuit.
-- All statistics are in LLC-2 Link Station Statistical Table.
-- All SDLC statistics are in SDLC MIB
-- ...................................................................


-- *******************************************************************
-- DLSW SDLC EXTENSION
-- *******************************************************************
dlswSdlcLsEntries  OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of entries in dlswSdlcLsTable."
    ::= { dlswSdlc 1 }

-- ...................................................................
dlswSdlcLsTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswSdlcLsEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION

Top      Up      ToC       Page 69 
       "The table defines the virtual MAC addresses for those
        SDLC link stations that participate in data link switching."
    ::= { dlswSdlc 2 }

dlswSdlcLsEntry  OBJECT-TYPE
    SYNTAX     DlswSdlcLsEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The index of this table is the ifIndex value for the
        SDLC port which owns this link station and the poll
        address of the particular SDLC link station."
    INDEX  { ifIndex, sdlcLSAddress }
    ::= { dlswSdlcLsTable 1 }

DlswSdlcLsEntry ::= SEQUENCE {
    dlswSdlcLsLocalMac           MacAddressNC,
    dlswSdlcLsLocalSap           OCTET STRING,
    dlswSdlcLsLocalIdBlock       DisplayString,
    dlswSdlcLsLocalIdNum         DisplayString,
    dlswSdlcLsRemoteMac          MacAddressNC,
    dlswSdlcLsRemoteSap          OCTET STRING,
    dlswSdlcLsRowStatus          RowStatus
    }

dlswSdlcLsLocalMac    OBJECT-TYPE
    SYNTAX     MacAddressNC
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The virtual MAC address used to represent the SDLC-attached
        link station to the rest of the DLSw network."
    ::= { dlswSdlcLsEntry 1 }

dlswSdlcLsLocalSap    OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE(1))
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The SAP used to represent this link station."
    ::= { dlswSdlcLsEntry 2 }

dlswSdlcLsLocalIdBlock OBJECT-TYPE
    SYNTAX     DisplayString  (SIZE (0 | 3))
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The block number is the first three digits of the node_id,

Top      Up      ToC       Page 70 
        if available.  These 3 hexadecimal digits identify the
        product."
    DEFVAL { ''H }
    ::= { dlswSdlcLsEntry 3 }

dlswSdlcLsLocalIdNum OBJECT-TYPE
    SYNTAX     DisplayString  (SIZE (0 | 5))
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The ID number is the last 5 digits of the node_id, if
        available.  These 5 hexadecimal digits are
        administratively defined and combined with the 3 digit
        block number form the node_id.  This node_id is used to
        identify the local node and is included in SNA XIDs."
    DEFVAL { ''H }
    ::= { dlswSdlcLsEntry 4 }

dlswSdlcLsRemoteMac    OBJECT-TYPE
    SYNTAX     MacAddressNC
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The MAC address to which DLSw should attempt to connect
        this link station. If this information is not available,
        a length of zero for this object should be returned."
    DEFVAL { ''H }
    ::= { dlswSdlcLsEntry 5 }

dlswSdlcLsRemoteSap    OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (0 | 1))
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The SAP of the remote station to which this link
        station should be connected.  If this information
        is not available, a length of zero for this object
        should be returned."
    DEFVAL { ''H }
    ::= { dlswSdlcLsEntry 6 }

dlswSdlcLsRowStatus    OBJECT-TYPE
    SYNTAX     RowStatus
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "This object is used by the manager to create
        or delete the row entry in the dlswSdlcLsTable

Top      Up      ToC       Page 71 
        following the RowStatus textual convention."
    ::= { dlswSdlcLsEntry 7 }


-- *******************************************************************
-- TRAP GENERATION CONTROL
-- *******************************************************************
dlswTrapControl OBJECT IDENTIFIER  ::= { dlswNode 10}

dlswTrapCntlTConnPartnerReject  OBJECT-TYPE
    SYNTAX     INTEGER  {
        enabled     (1),
        disabled    (2),
        partial     (3)
    }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
       "Indicates whether the DLSw is permitted to emit partner
        reject related traps.  With the value of `enabled'
        the DLSw will emit all partner reject related traps.
        With the value of `disabled' the DLSw will not emit
        any partner reject related traps.  With the value
        of `partial' the DLSw will only emits partner reject
        traps for CapEx reject.  The changes take effect
        immediately."
    ::= { dlswTrapControl 1 }

dlswTrapCntlTConnProtViolation  OBJECT-TYPE
    SYNTAX     TruthValue
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
       "Indicates whether the DLSw is permitted to generate
        protocol-violation traps on the events such as
        window size violation.  The changes take effect
        immediately."
    ::= { dlswTrapControl 2 }

dlswTrapCntlTConn  OBJECT-TYPE
    SYNTAX     INTEGER {
        enabled     (1),
        disabled    (2),
        partial     (3)
    }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION

Top      Up      ToC       Page 72 
       "Indicates whether the DLSw is permitted to emit transport
        connection up and down traps.  With the value of `enabled'
        the DLSw will emit traps when connections enter `connected'
        and `disconnected' states.  With the value of `disabled'
        the DLSw will not emit traps when connections enter of
        `connected' and `disconnected' states.  With the value
        of `partial' the DLSw will only emits transport connection
        down traps when the connection is closed with busy.
        The changes take effect immediately."
    ::= { dlswTrapControl 3 }

dlswTrapCntlCircuit  OBJECT-TYPE
    SYNTAX     INTEGER {
        enabled     (1),
        disabled    (2),
        partial     (3)
    }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
       "Indicates whether the DLSw is permitted to generate
        circuit up and down traps.  With the value of `enabled'
        the DLSw will emit traps when circuits enter `connected'
        and `disconnected' states.  With the value of `disabled'
        the DLSw will not emit traps when circuits enter of
        `connected' and `disconnected' states.  With the value
        of `partial' the DLSw will emit traps only for those
        circuits that are initiated by this DLSw, e.g.,
        originating the CUR_CS message.  The changes take effect
        immediately."
    ::= { dlswTrapControl 4 }

-- *******************************************************************
-- NOTIFICATIONS, i.e., TRAP DEFINITIONS
-- *******************************************************************
dlswTraps              OBJECT IDENTIFIER ::= { dlswMIB 0 }

-- -------------------------------------------------------------------
-- This section defines the well-known notifications sent by
-- DLSW agents.
-- Care must be taken to insure that no particular notification
-- is sent to a single receiving entity more often than once
-- every five seconds.
--
-- Traps includes:
-- (1) Partner rejected (capEx rejection, not in partner list, etc.)
-- (2) DLSw protocol violation (e.g., window size violation, etc.)
-- (3) Transport connection up/down

Top      Up      ToC       Page 73 
-- (4) Circuit up/down
-- -------------------------------------------------------------------
--

dlswTrapTConnPartnerReject NOTIFICATION-TYPE
    OBJECTS { dlswTConnOperTDomain, dlswTConnOperRemoteTAddr
    }
    STATUS     current
    DESCRIPTION
       "This trap is sent each time a transport connection
        is rejected by a partner DLSw during Capabilities
        Exchanges.  The emission of this trap is controlled
        by dlswTrapCntlTConnPartnerReject."
    ::= { dlswTraps 1 }

dlswTrapTConnProtViolation NOTIFICATION-TYPE
    OBJECTS { dlswTConnOperTDomain, dlswTConnOperRemoteTAddr
    }
    STATUS     current
    DESCRIPTION
       "This trap is sent each time a protocol violation is
        detected for a transport connection.  The emission of this
        trap is controlled by dlswTrapCntlTConnProtViolation."
    ::= { dlswTraps 2 }

dlswTrapTConnUp NOTIFICATION-TYPE
    OBJECTS { dlswTConnOperTDomain, dlswTConnOperRemoteTAddr
    }
    STATUS     current
    DESCRIPTION
       "This trap is sent each time a transport connection
        enters `connected' state.  The emission of this trap
        is controlled by dlswTrapCntlTConn."
    ::= { dlswTraps 3 }

dlswTrapTConnDown NOTIFICATION-TYPE
    OBJECTS { dlswTConnOperTDomain, dlswTConnOperRemoteTAddr
    }
    STATUS     current
    DESCRIPTION
       "This trap is sent each time a transport connection
        enters `disconnected' state.  The emission of this trap
        is controlled by dlswTrapCntlTConn."
    ::= { dlswTraps 4 }

dlswTrapCircuitUp NOTIFICATION-TYPE
    OBJECTS { dlswCircuitS1Mac, dlswCircuitS1Sap,
              dlswCircuitS2Mac, dlswCircuitS2Sap

Top      Up      ToC       Page 74 
    }
    STATUS     current
    DESCRIPTION
       "This trap is sent each time a circuit enters `connected'
        state.  The emission of this trap is controlled by
        dlswTrapCntlCircuit."
    ::= { dlswTraps 5 }

dlswTrapCircuitDown NOTIFICATION-TYPE
    OBJECTS { dlswCircuitS1Mac, dlswCircuitS1Sap,
              dlswCircuitS2Mac, dlswCircuitS2Sap
    }
    STATUS     current
    DESCRIPTION
       "This trap is sent each time a circuit enters `disconnected'
        state.  The emission of this trap is controlled by
        dlswTrapCntlCircuit."
    ::= { dlswTraps 6 }


-- *******************************************************************
-- CONFORMANCE INFORMATION
-- *******************************************************************
dlswConformance        OBJECT IDENTIFIER ::= { dlsw 3 }

dlswCompliances        OBJECT IDENTIFIER ::= { dlswConformance 1 }
dlswGroups             OBJECT IDENTIFIER ::= { dlswConformance 2 }

-- -------------------------------------------------------------------
-- COMPLIANCE STATEMENTS
-- -------------------------------------------------------------------

-- ...................................................................
-- Core compliance for all DLSw entities
-- ...................................................................
dlswCoreCompliance MODULE-COMPLIANCE
    STATUS current
    DESCRIPTION
       "The core compliance statement for all DLSw nodes."
    MODULE
        MANDATORY-GROUPS  {
                dlswNodeGroup,
                dlswTConnStatGroup,
                dlswTConnConfigGroup,
                dlswTConnOperGroup,
                dlswInterfaceGroup,
                dlswCircuitGroup,
                dlswCircuitStatGroup,

Top      Up      ToC       Page 75 
                dlswNotificationGroup }

        GROUP dlswNodeNBGroup
            DESCRIPTION
               "The DLSw NetBIOS Node group is mandatory only for
                those DLSw entities that implement NetBIOS."

        GROUP dlswTConnNBGroup
            DESCRIPTION
               "The DLSw NetBIOS Transport Connection group is
                mandatory only for those DLSw entities that
                implement NetBIOS."

        OBJECT  dlswNodeStatus
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswNodeVirtualSegmentLFSize
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswNodeResourceNBExclusivity
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswNodeResourceMacExclusivity
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTrapCntlTConnPartnerReject
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTrapCntlTConnProtViolation
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTrapCntlTConn
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

Top      Up      ToC       Page 76 
        OBJECT  dlswTrapCntlCircuit
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnConfigTDomain
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnConfigLocalTAddr
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnConfigRemoteTAddr
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnConfigEntryType
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnConfigGroupDefinition
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnConfigSetupType
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnConfigSapList
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnConfigAdvertiseMacNB
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnConfigInitCirRecvWndw
            MIN-ACCESS  read-only
            DESCRIPTION

Top      Up      ToC       Page 77 
                "Write access is not required."

        OBJECT  dlswTConnConfigRowStatus
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnOperState
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswIfRowStatus
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswIfVirtualSegment
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswIfSapList
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswCircuitState
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

    ::= { dlswCompliances 1 }

-- ...................................................................
-- Compliance for all DLSw entities that provide TCP transport.
-- ...................................................................
dlswTConnTcpCompliance MODULE-COMPLIANCE
    STATUS current
    DESCRIPTION
       "Compliance for DLSw nodes that use TCP as a
        transport connection protocol."
    MODULE
        MANDATORY-GROUPS  {
                dlswTConnTcpConfigGroup,
                dlswTConnTcpOperGroup }

        OBJECT  dlswTConnTcpConfigKeepAliveInt

Top      Up      ToC       Page 78 
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnTcpConfigTcpConnections
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswTConnTcpConfigMaxSegmentSize
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

    ::= { dlswCompliances 2 }

-- ...................................................................
-- Compliance for all DLSw Entities that implement a directory
-- ...................................................................
dlswDirCompliance MODULE-COMPLIANCE
    STATUS current
    DESCRIPTION
       "Compliance for DLSw nodes that provide a directory
        function."
    MODULE
        MANDATORY-GROUPS  {
                dlswDirGroup }

        GROUP dlswDirNBGroup
            DESCRIPTION
               "The DLSw NetBIOS group is mandatory only for
                those DLSw entities that implement NetBIOS."

        OBJECT  dlswDirMacMac
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirMacMask
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirMacEntryType
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

Top      Up      ToC       Page 79 
        OBJECT  dlswDirMacLocationType
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirMacLocation
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirMacStatus
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirMacLFSize
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirMacRowStatus
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirNBName
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirNBNameType
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirNBEntryType
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirNBLocationType
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirNBLocation
            MIN-ACCESS  read-only
            DESCRIPTION

Top      Up      ToC       Page 80 
                "Write access is not required."

        OBJECT  dlswDirNBStatus
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirNBLFSize
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

        OBJECT  dlswDirNBRowStatus
            MIN-ACCESS  read-only
            DESCRIPTION
                "Write access is not required."

    ::= { dlswCompliances 3 }

-- ...................................................................
-- Compliance for all DLSw entities that provide an ordered
-- list of directory entries that match a resource
-- ...................................................................
dlswDirLocateCompliance MODULE-COMPLIANCE
    STATUS current
    DESCRIPTION
       "Compliance for DLSw nodes that provide an ordered
        list of directory entries for a given resource."
    MODULE
        MANDATORY-GROUPS  {
                dlswDirLocateGroup }

        GROUP dlswDirLocateNBGroup
            DESCRIPTION
               "The DLSw NetBIOS group is mandatory only for
                those DLSw entities that implement NetBIOS."

    ::= { dlswCompliances 4 }

-- ...................................................................
-- Compliance for all DLSw entities that support SDLC end stations
-- ...................................................................
dlswSdlcCompliance MODULE-COMPLIANCE
    STATUS current
    DESCRIPTION
       "Compliance for DLSw nodes that support SDLC."
    MODULE
        MANDATORY-GROUPS  {

Top      Up      ToC       Page 81 
                dlswSdlcGroup }

        OBJECT  dlswSdlcLsLocalMac
            MIN-ACCESS  read-only
            DESCRIPTION
               "Write access is not required."

        OBJECT  dlswSdlcLsLocalSap
            MIN-ACCESS  read-only
            DESCRIPTION
               "Write access is not required."

        OBJECT  dlswSdlcLsLocalIdBlock
            MIN-ACCESS  read-only
            DESCRIPTION
               "Write access is not required."

        OBJECT  dlswSdlcLsLocalIdNum
            MIN-ACCESS  read-only
            DESCRIPTION
               "Write access is not required."

        OBJECT  dlswSdlcLsRemoteMac
            MIN-ACCESS  read-only
            DESCRIPTION
               "Write access is not required."

        OBJECT  dlswSdlcLsRemoteSap
            MIN-ACCESS  read-only
            DESCRIPTION
               "Write access is not required."

        OBJECT  dlswSdlcLsRowStatus
            MIN-ACCESS  read-only
            DESCRIPTION
               "Write access is not required."

    ::= { dlswCompliances 5 }

-- -------------------------------------------------------------------
-- CONFORMANCE GROUPS
-- -------------------------------------------------------------------

-- ...................................................................
-- Node Conformance Group
-- ...................................................................
dlswNodeGroup  OBJECT-GROUP
    OBJECTS  {

Top      Up      ToC       Page 82 
        dlswNodeVersion,
        dlswNodeVendorID,
        dlswNodeVersionString,
        dlswNodeStdPacingSupport,
        dlswNodeStatus,
        dlswNodeUpTime,
        dlswNodeVirtualSegmentLFSize,
        dlswNodeResourceMacExclusivity,
        dlswTrapCntlTConnPartnerReject,
        dlswTrapCntlTConnProtViolation,
        dlswTrapCntlTConn,
        dlswTrapCntlCircuit
        }
    STATUS current
    DESCRIPTION
       "Conformance group for DLSw node general information."
    ::= { dlswGroups 1 }

-- ...................................................................
dlswNodeNBGroup  OBJECT-GROUP
    OBJECTS  {
        dlswNodeResourceNBExclusivity
        }
    STATUS current
    DESCRIPTION
       "Conformance group for DLSw node general information
        specifically for nodes that support NetBIOS."
    ::= { dlswGroups 2 }

-- ...................................................................
dlswTConnStatGroup  OBJECT-GROUP
    OBJECTS  {
        dlswTConnStatActiveConnections,
        dlswTConnStatCloseIdles,
        dlswTConnStatCloseBusys
        }
    STATUS current
    DESCRIPTION
       "Conformance group for statistics for transport
        connections."
    ::= { dlswGroups 3 }

-- ...................................................................
dlswTConnConfigGroup  OBJECT-GROUP
    OBJECTS  {
        dlswTConnConfigTDomain,
        dlswTConnConfigLocalTAddr,
        dlswTConnConfigRemoteTAddr,

Top      Up      ToC       Page 83 
        dlswTConnConfigLastModifyTime,
        dlswTConnConfigEntryType,
        dlswTConnConfigGroupDefinition,
        dlswTConnConfigSetupType,
        dlswTConnConfigSapList,
        dlswTConnConfigAdvertiseMacNB,
        dlswTConnConfigInitCirRecvWndw,
        dlswTConnConfigOpens,
        dlswTConnConfigRowStatus
        }
    STATUS current
    DESCRIPTION
       "Conformance group for the configuration of
        transport connections."
    ::= { dlswGroups 4 }

-- ...................................................................
dlswTConnOperGroup  OBJECT-GROUP
    OBJECTS  {
        dlswTConnOperLocalTAddr,
        dlswTConnOperEntryTime,
        dlswTConnOperConnectTime,
        dlswTConnOperState,
        dlswTConnOperConfigIndex,
        dlswTConnOperFlowCntlMode,
        dlswTConnOperPartnerVersion,
        dlswTConnOperPartnerVendorID,
        dlswTConnOperPartnerVersionStr,
        dlswTConnOperPartnerInitPacingWndw,
        dlswTConnOperPartnerSapList,
        dlswTConnOperPartnerMacExcl,
        dlswTConnOperPartnerMacInfo,
        dlswTConnOperDiscTime,
        dlswTConnOperDiscReason,
        dlswTConnOperDiscActiveCir,
        dlswTConnOperInDataPkts,
        dlswTConnOperOutDataPkts,
        dlswTConnOperInDataOctets,
        dlswTConnOperOutDataOctets,
        dlswTConnOperInCntlPkts,
        dlswTConnOperOutCntlPkts,
        dlswTConnOperCURexSents,
        dlswTConnOperICRexRcvds,
        dlswTConnOperCURexRcvds,
        dlswTConnOperICRexSents,
        dlswTConnOperCirCreates,
        dlswTConnOperCircuits
        }

Top      Up      ToC       Page 84 
    STATUS current
    DESCRIPTION
       "Conformance group for operation information for
        transport connections."
    ::= { dlswGroups 5 }
-- ...................................................................
dlswTConnNBGroup  OBJECT-GROUP
    OBJECTS  {
        dlswTConnOperPartnerNBExcl,
        dlswTConnOperPartnerNBInfo,
        dlswTConnOperNQexSents,
        dlswTConnOperNRexRcvds,
        dlswTConnOperNQexRcvds,
        dlswTConnOperNRexSents
        }
    STATUS current
    DESCRIPTION
       "Conformance group for operation information for
        transport connections, specifically for nodes
        that support NetBIOS."
    ::= { dlswGroups 6 }

-- ...................................................................
dlswTConnTcpConfigGroup  OBJECT-GROUP
    OBJECTS  {
        dlswTConnTcpConfigKeepAliveInt,
        dlswTConnTcpConfigTcpConnections,
        dlswTConnTcpConfigMaxSegmentSize
        }
    STATUS current
    DESCRIPTION
       "Conformance group for configuration information for
        transport connections using TCP."
    ::= { dlswGroups 7 }

-- ...................................................................
dlswTConnTcpOperGroup  OBJECT-GROUP
    OBJECTS  {
        dlswTConnTcpOperKeepAliveInt,
        dlswTConnTcpOperPrefTcpConnections,
        dlswTConnTcpOperTcpConnections
        }
    STATUS current
    DESCRIPTION
       "Conformance group for operation information for
        transport connections using TCP."
    ::= { dlswGroups 8 }

Top      Up      ToC       Page 85 
-- ...................................................................
dlswInterfaceGroup  OBJECT-GROUP
    OBJECTS  {
        dlswIfRowStatus,
        dlswIfVirtualSegment,
        dlswIfSapList
        }
    STATUS current
    DESCRIPTION
       "Conformance group for DLSw interfaces."
    ::= { dlswGroups 9 }

-- ...................................................................
dlswDirGroup  OBJECT-GROUP
    OBJECTS  {
        dlswDirMacEntries,
        dlswDirMacCacheHits,
        dlswDirMacCacheMisses,
        dlswDirMacCacheNextIndex,
        dlswDirMacMac,
        dlswDirMacMask,
        dlswDirMacEntryType,
        dlswDirMacLocationType,
        dlswDirMacLocation,
        dlswDirMacStatus,
        dlswDirMacLFSize,
        dlswDirMacRowStatus
        }
    STATUS current
    DESCRIPTION
       "Conformance group for DLSw directory using MAC
        addresses."
    ::= { dlswGroups 10 }

-- ...................................................................
dlswDirNBGroup  OBJECT-GROUP
    OBJECTS  {
        dlswDirNBEntries,
        dlswDirNBCacheHits,
        dlswDirNBCacheMisses,
        dlswDirNBCacheNextIndex,
        dlswDirNBName,
        dlswDirNBNameType,
        dlswDirNBEntryType,
        dlswDirNBLocationType,
        dlswDirNBLocation,
        dlswDirNBStatus,
        dlswDirNBLFSize,

Top      Up      ToC       Page 86 
        dlswDirNBRowStatus
        }
    STATUS current
    DESCRIPTION
       "Conformance group for DLSw directory using NetBIOS
        names."
    ::= { dlswGroups 11 }

-- ...................................................................
dlswDirLocateGroup  OBJECT-GROUP
    OBJECTS  {
        dlswDirLocateMacLocation
        }
    STATUS current
    DESCRIPTION
       "Conformance group for a node that can return directory
        entry order for a given MAC address."
    ::= { dlswGroups 12 }

-- ...................................................................
dlswDirLocateNBGroup  OBJECT-GROUP
    OBJECTS  {
        dlswDirLocateNBLocation
        }
    STATUS current
    DESCRIPTION
       "Conformance group for a node that can return directory
        entry order for a given NetBIOS name."
    ::= { dlswGroups 13 }

-- ...................................................................
dlswCircuitStatGroup  OBJECT-GROUP
    OBJECTS  {
        dlswCircuitStatActives,
        dlswCircuitStatCreates
        }
    STATUS current
    DESCRIPTION
       "Conformance group for statistics about circuits."
    ::= { dlswGroups 14 }

-- ...................................................................
dlswCircuitGroup  OBJECT-GROUP
    OBJECTS  {
        dlswCircuitS1IfIndex,
        dlswCircuitS1DlcType,
        dlswCircuitS1RouteInfo,
        dlswCircuitS1CircuitId,

Top      Up      ToC       Page 87 
        dlswCircuitS1Dlc,
        dlswCircuitS2Location,
        dlswCircuitS2TDomain,
        dlswCircuitS2TAddress,
        dlswCircuitS2CircuitId,
        dlswCircuitOrigin,
        dlswCircuitEntryTime,
        dlswCircuitStateTime,
        dlswCircuitState,
        dlswCircuitPriority,
        dlswCircuitFCSendGrantedUnits,
        dlswCircuitFCSendCurrentWndw,
        dlswCircuitFCRecvGrantedUnits,
        dlswCircuitFCRecvCurrentWndw,
        dlswCircuitFCLargestRecvGranted,
        dlswCircuitFCLargestSendGranted,
        dlswCircuitFCHalveWndwSents,
        dlswCircuitFCResetOpSents,
        dlswCircuitFCHalveWndwRcvds,
        dlswCircuitFCResetOpRcvds,
        dlswCircuitDiscReasonLocal,
        dlswCircuitDiscReasonRemote,
        dlswCircuitDiscReasonRemoteData
        }
    STATUS current
    DESCRIPTION
       "Conformance group for DLSw circuits."
    ::= { dlswGroups 15 }

-- ...................................................................
dlswSdlcGroup  OBJECT-GROUP
    OBJECTS  {
        dlswSdlcLsEntries,
        dlswSdlcLsLocalMac,
        dlswSdlcLsLocalSap,
        dlswSdlcLsLocalIdBlock,
        dlswSdlcLsLocalIdNum,
        dlswSdlcLsRemoteMac,
        dlswSdlcLsRemoteSap,
        dlswSdlcLsRowStatus
        }
    STATUS current
    DESCRIPTION
       "Conformance group for DLSw SDLC support."
    ::= { dlswGroups 16 }

-- ...................................................................
dlswNotificationGroup  NOTIFICATION-GROUP

Top      Up      ToC       Page 88 
    NOTIFICATIONS  {
        dlswTrapTConnPartnerReject,
        dlswTrapTConnProtViolation,
        dlswTrapTConnUp,
        dlswTrapTConnDown,
        dlswTrapCircuitUp,
        dlswTrapCircuitDown
        }
    STATUS current
    DESCRIPTION
       "Conformance group for DLSw notifications."
    ::= { dlswGroups 17 }

END

Top      Up      ToC       Page 89 
4.0  Acknowledgements

   This memo has been produced by the AIW DLSw MIB RIGlet, which is also
   recognized as the IETF DLSw MIB Working Group.

5.0  References


[1] Bartky, A., "Data Link Switching: Switch-to-Switch Protocol; AIW
    DLSw RIG: DLSw Closed Pages, DLSw Standard Version 1", RFC 1795,
    Sync Research Inc., April 1995.

[2] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and S.
    Waldbusser, "Structure of Management Information for version 2 of
    the Simple Network Management Protocol (SNMPv2)", RFC 1902, January
    1996.

[3] Rose, M., and K. McCloghrie, "Structure and Identification of
    Management Information for TCP/IP-based Internets", STD 16, RFC
    1155, Performance Systems International, Hughes LAN Systems, May
    1990.

[4] McCloghrie, K., and M. Rose, "Management Information Base for
    Network Management of TCP/IP-based internets - MIB-II", STD 17, RFC
    1213, Hughes LAN Systems, Performance Systems International, March
    1991.

[5] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple Network
    Management Protocol", STD 15, RFC 1157, SNMP Research, Performance
    Systems International, Performance Systems International, MIT
    Laboratory for Computer Science, May 1990.

[6] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and S.
    Waldbusser, "Protocol Operations for version 2 of the Simple Network
    Management Protocol (SNMPv2)", RFC 1905, January 1996.

[7] IEEE Project, "ANSI/IEEE P802.1D", 1993

[8] McCloghrie, K., and F. Kastenholz, "Evolution of the Interfaces
    Group of MIB-II", RFC 1573, Hughes LAN Systems, FTP Software,
    January 1994.

[9] Hilgeman, J., S. Nix, A. Bartky, and W. Clark, "Definitions of
    Managed Objects for SNA Data Link Control (SDLC) using SMIv2", RFC
    1747, Apertus Technologies, Inc., Metaplex, Inc., Sync Research,
    Inc., cisco Systems, Inc., January 1995

Top      Up      ToC       Page 90 
6.0  Security Considerations

   Security issues are not discussed in this memo.


7.0  Authors' Addresses

   David D. Chen
   IBM Networking Systems
   P. O. Box 12195
   Research Triangle Park, NC  27709
   US

   Phone: +1 919 254 6182
   EMail: dchen@vnet.ibm.com


   Peter W. Gayek
   IBM Networking Systems
   P. O. Box 12195
   Research Triangle Park, NC  27709
   US

   Phone: +1 919 254 1808
   EMail: gayek@vnet.ibm.com


   Shannon Nix
   Metaplex, Inc.

   7025 Kit Creek Road
   P. O. Box 14987
   Research Triangle Park, NC 27709
   US

   Phone: +1 919 472 2388
   EMail: snix@metaplex.com