3.0  Definitions

-- *******************************************************************
--
-- The structure of the DLSw MIB (t: indicates table):
--   DLSw MIB
--   |-- Node Group
--   |   |-- Node Identity
--   |   |-- Node Operational Related
--   |   |-- Node Resource
--   |
--   |-- Transport Connection Group
--   |   |-- Statistics
--   |   |t- Transport Connection Configuration
--   |   |t- Transport Connection Operation
--   |   |   |-- capabilities
--   |   |   |-- Supported SAP List
--   |   |   |-- statistics
--   |   |       |-- transport connection itself
--   |   |       |-- traffic over the transport connection
--   |   |       |-- directory search activities
--   |   |       |-- search filtered statistics
--   |   |       |-- circuits over the transport connection
--   |   |-- Transport Specific
--   |       |-- Tcp
--   |           |t- Transport Connection Config (Tcp Specific)
--   |           |t- Transport Connection Operation (Tcp Specific)
--   |
--   |-- Interface Group
--   |   |t- interfaces that DLSw is active on.
--   |
--   |-- Directory Group
--   |   |-- Statistics
--   |   |-- Directory Cache
--   |   |   |t- Directory of MAC addresses
--   |   |   |t- Directory of NETBIOS names
--   |   |-- Locate
--   |       |t- Directory of Locate MAC
--   |       |t- Directory of Locate NETBIOS
--   |
--   |-- Circuit Group
--   |   |-- Statistics
--   |   |t- Circuits
--   |
--   |-- Virtual and non-LAN end stations
--   |   |t- SDLC end station
--   |
-- *******************************************************************

-- *******************************************************************
-- This MIB module contains objects necessary for management of Data
-- Link Switches.
--
-- Terminology:
-- (1) DLSw:
--     A device which provides data link switching function.
--     Sometimes it is referred as a DLSw or DLSw node.
--     Local DLSw:   The DLSw that the DLSw SNMP Agent is running on.
--     Partner DLSw (or DLSw partner): A DLSw node that is "transport
--     connected" with the local DLSw.  Sometimes the term "DLSw
--     partners" is used to indicate the two ends of a transport
--     connection.
--
-- (2) TCP Connection:
--     Full-duplex (-capable) association defined by a pair of
--     (IP address, port) pairs, running the TCP protocol.  The port
--     addresses in RFC 1795 define two TCP connections between
--     a pair of DLSw nodes, each being used to send data in a
--     single direction.
--     Local:    This end of TCP connection
--     Foreign:  Remote end of TCP connection
--
-- (3) Transport Connection:
--     It is a generic term for a full-duplex reliable connection
--     between DLSw nodes.  This term is used to refer to the
--     association between DLSw nodes without being concerned
--     about whether TCP is the protocol or whether there are
--     one or two TCP connection.
--     (Note: for two TCP connections, the transport connection is
--     opened if and only if both TCP connections are operational.
--     Also note: sometimes race conditions will occur, but the
--     condition should only be temporary.)
--
-- (4) Data Link:
--     An instance of OSI layer-2 procedures for exchanging information
--     using either connection-oriented (e.g., LLC-2) or connectionless
--     (e.g., LLC-1) services.  A DLSw node or pair of partner nodes
--     switches data traffic from stations of one data link to
--     stations of another data link.  Data link switching is
--     transparent to end stations.
--     Source: the end station which sends a message.
--     Destination: the end station which receives a message.
--     (This DLSw role is with respect to a give message)
--
-- (5) Circuit:
--     End-to-end association of two DLC entities through one or
--     two DLSw nodes.  A circuit is the concatenation of two

--     "data links", optionally with an intervening transport
--     connection.
--     Origin:   the end station which initiates the circuit.
--     Target:   the end station which receives the initiation.
--
-- (6) Link Station:
--     It is one end of an LLC-2 connection. It performs error
--     recovery procedure, retries, and various timers.
--     DLSw terminates LLC-2 connection at each end of DLSw nodes,
--     thus, keepAlive and error recovery on LLC-2 connections are
--     kept to each side of LAN and do not flow through the WAN.
--     A link station is substantiated when SABME is sent/received.
--     All link stations have circuits, but not all circuits
--     have link stations.
--
-- Key assumptions are:
-- (1) The MIB is designed to manage a single DLSw entity.
--
-- (2) A DLSw may support various types of transport connections.
--     - This DLSw MIB module does not restrict the possibility to
--       have, at any given moment, more than one "transport
--       connection" defined or active between two DLSw's.
--     - However, current DLSw architecture does not provide a mechanism,
--       e.g., DLSw host name, to prevent two transport connections of
--       different types between the same two DLSw's.
--
-- (3) This MIB assumes that interface MIB is implemented.  ifIndex
--     is used in this MIB module.
--
-- (4) This MIB assumes that the SDLC MIB (or an equivalent enterprise
--     specific MIB) is implemented, since SDLC-specific objects
--     are not duplicated here.
--
-- (5) This MIB assumes that the LLC-2 MIB (or an equivalent enterprise
--     specific MIB) is implemented, since LLC-related objects are not
--     duplicated here.
--
-- (6) All MACs, SAPs, Ring numbers, ... are in non-canonical form.
--     That is, the most significant bit will be transmitted first.
--
-- *******************************************************************

DLSW-MIB DEFINITIONS ::= BEGIN

IMPORTS
        DisplayString, RowStatus,
        RowPointer, TruthValue,
        TEXTUAL-CONVENTION                FROM SNMPv2-TC

        Counter32, Gauge32, TimeTicks,
        OBJECT-TYPE, MODULE-IDENTITY,
        NOTIFICATION-TYPE                 FROM SNMPv2-SMI
        MODULE-COMPLIANCE, OBJECT-GROUP,
        NOTIFICATION-GROUP                FROM SNMPv2-CONF
        ifIndex                           FROM IF-MIB
        sdlcLSAddress                     FROM SNA-SDLC-MIB;

dlsw MODULE-IDENTITY
    LAST-UPDATED  "9606040900Z"
    ORGANIZATION  "AIW DLSw MIB RIGLET and IETF DLSw MIB Working Group"
    CONTACT-INFO
                  "David D. Chen
                   IBM Corporation
                   800 Park, Highway 54
                   Research Triangle Park, NC 27709-9990
                   Tel:    1 919 254 6182
                   E-mail: dchen@vnet.ibm.com"
   DESCRIPTION
        "This MIB module contains objects to manage Data Link
         Switches."
::= { mib-2 46 }

dlswMIB         OBJECT IDENTIFIER ::= { dlsw 1 }
dlswDomains     OBJECT IDENTIFIER ::= { dlsw 2 }

-- *******************************************************************
-- Textual convention definitions
-- *******************************************************************

NBName ::= TEXTUAL-CONVENTION
    STATUS       current
    DESCRIPTION
       "Represents a single qualified NetBIOS name, which can include
        `don't care' and `wildcard' characters to represent a number
        of real NetBIOS names.  If an individual character position in
        the qualified name contains a `?', the corresponding character
        position in a real NetBIOS name is a `don't care'.  If the
        qualified name ends in `*', the remainder of a real NetBIOS
        name is a `don't care'. `*' is only considered a wildcard if it
        appears at the end of a name."
    SYNTAX  OCTET STRING (SIZE (0..16))

MacAddressNC ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "1x:"
    STATUS       current
    DESCRIPTION
       "Represents an 802 MAC address represented in

        non-canonical format.  That is, the most significant
        bit will be transmitted first.  If this information
        is not available, the value is a zero length string."
    SYNTAX       OCTET STRING (SIZE (0 | 6))

TAddress ::= TEXTUAL-CONVENTION
    STATUS  current
    DESCRIPTION
       "Denotes a transport service address.
        For dlswTCPDomain, a TAddress is 4 octets long,
        containing the IP-address in network-byte order."
    SYNTAX  OCTET STRING (SIZE (0..255))

EndStationLocation ::= TEXTUAL-CONVENTION
    STATUS  current
    DESCRIPTION
       "Representing the location of an end station related
        to the managed DLSw node."
    SYNTAX  INTEGER  {
                other          (1),
                internal       (2),  -- local virtual MAC address
                remote         (3),  -- via DLSw partner
                local          (4)   -- locally attached
            }

DlcType ::= TEXTUAL-CONVENTION
    STATUS  current
    DESCRIPTION
       "Representing the type of DLC of an end station, if
        applicable."
    SYNTAX  INTEGER  {
                other          (1),  -- not assigned yet
                na             (2),  -- not applicable
                llc            (3),  -- 802.2 Logical Link Control
                sdlc           (4),  -- SDLC
                qllc           (5)   -- QLLC
            }

LFSize  ::= TEXTUAL-CONVENTION
    STATUS  current
    DESCRIPTION
       "The largest size of the INFO field (including DLC header,
        not including any MAC-level or framing octets).
        64 valid values as defined by the IEEE 802.1D
        Addendum are acceptable."
    SYNTAX  INTEGER  {
               lfs516(516), lfs635(635), lfs754(754), lfs873(873),
               lfs993(993), lfs1112(1112), lfs1231(1231),

               lfs1350(1350), lfs1470(1470), lfs1542(1542),
               lfs1615(1615), lfs1688(1688), lfs1761(1761),
               lfs1833(1833), lfs1906(1906), lfs1979(1979),
               lfs2052(2052), lfs2345(2345), lfs2638(2638),
               lfs2932(2932), lfs3225(3225), lfs3518(3518),
               lfs3812(3812), lfs4105(4105), lfs4399(4399),
               lfs4865(4865), lfs5331(5331), lfs5798(5798),
               lfs6264(6264), lfs6730(6730), lfs7197(7197),
               lfs7663(7663), lfs8130(8130), lfs8539(8539),
               lfs8949(8949), lfs9358(9358), lfs9768(9768),
               lfs10178(10178), lfs10587(10587), lfs10997(10997),
               lfs11407(11407), lfs12199(12199), lfs12992(12992),
               lfs13785(13785), lfs14578(14578), lfs15370(15370),
               lfs16163(16163), lfs16956(16956), lfs17749(17749),
               lfs20730(20730), lfs23711(23711), lfs26693(26693),
               lfs29674(29674), lfs32655(32655), lfs38618(38618),
               lfs41600(41600), lfs44591(44591), lfs47583(47583),
               lfs50575(50575), lfs53567(53567), lfs56559(56559),
               lfs59551(59551), lfs65535(65535)
            }

null OBJECT IDENTIFIER ::= { 0 0 }


-- *******************************************************************
-- DLSw Transport Domain definitions
-- *******************************************************************

-- DLSw over TCP
dlswTCPDomain  OBJECT IDENTIFIER ::= { dlswDomains 1 }
-- for an IP address of length 4:
--
-- octets   contents        encoding
--  1-4     IP-address      network-byte order
--
DlswTCPAddress ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "1d.1d.1d.1d"
    STATUS       current
    DESCRIPTION
            "Represents the IP address of a DLSw which uses
             TCP as a transport protocol."
    SYNTAX       OCTET STRING (SIZE (4))


-- *******************************************************************
-- DLSw MIB Definition
-- *******************************************************************

-- The DLSw MIB module contains an object part and a conformance part.
-- Object part is organized in the following groups:
-- (1) dlswNode      -- information about this DLSw
-- (2) dlswTConn     -- about adjacent DLSw partners
-- (3) dlswInterface -- about which interfaces DLSw is active on
-- (4) dlswDirectory -- about any directory of local/remote resources
-- (5) dlswCircuit   -- about established circuits.
-- (6) dlswSdlc      -- about SDLC data link switched devices

dlswNode        OBJECT IDENTIFIER ::= { dlswMIB 1 }
dlswTConn       OBJECT IDENTIFIER ::= { dlswMIB 2 }
dlswInterface   OBJECT IDENTIFIER ::= { dlswMIB 3 }
dlswDirectory   OBJECT IDENTIFIER ::= { dlswMIB 4 }
dlswCircuit     OBJECT IDENTIFIER ::= { dlswMIB 5 }
dlswSdlc        OBJECT IDENTIFIER ::= { dlswMIB 6 }  -- SDLC

-- *******************************************************************
-- THE NODE GROUP
-- *******************************************************************

-- -------------------------------------------------------------------
-- DLSw Node Identity
-- -------------------------------------------------------------------
dlswNodeVersion  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (2))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "This value identifies the particular version of the DLSw
        standard supported by this DLSw.  The first octet is a
        hexadecimal value representing the DLSw standard Version
        number of this DLSw, and the second is a hexadecimal value
        representing the DLSw standard Release number. This
        information is reported in DLSw Capabilities Exchange."
    REFERENCE
       "DLSW: Switch-to-Switch Protocol RFC 1795"
    ::= { dlswNode 1 }

dlswNodeVendorID  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (3))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The value identifies the manufacturer's IEEE-assigned
        organizationally Unique Identifier (OUI) of this DLSw.
        This information is reported in DLSw Capabilities
        Exchange."
    REFERENCE

       "DLSW: Switch-to-Switch Protocol RFC 1795"
    ::= { dlswNode 2 }

dlswNodeVersionString  OBJECT-TYPE
    SYNTAX     DisplayString
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "This string gives product-specific information about
        this DLSw (e.g., product name, code release and fix level).
        This flows in Capabilities Exchange messages."
    REFERENCE
       "DLSW: Switch-to-Switch Protocol RFC 1795"
    ::= { dlswNode 3 }

-- -------------------------------------------------------------------
-- DLSw Code Capability
-- -------------------------------------------------------------------
dlswNodeStdPacingSupport  OBJECT-TYPE
    SYNTAX     INTEGER  {
       none              (1),  -- does not support DLSw
                               -- Standard pacing scheme
       adaptiveRcvWindow (2),  -- the receive window size
                               -- varies
       fixedRcvWindow    (3)   -- the receive window size
                               -- remains constant
    }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "Circuit pacing, as defined in the DLSw Standard, allows each
        of the two DLSw nodes on a circuit to control the amount
        of data the other is permitted to send to them.  This object
        reflects the level of support the DLSw node has for this
        protocol.  (1) means the node has no support for the standard
        circuit pacing flows;  it may use RFC 1434+ methods only, or
        a proprietary flow control scheme.  (2) means the node supports
        the standard scheme and can vary the window sizes it grants as
        a data receiver.  (3) means the node supports the standard
        scheme but never varies its receive window size."
    ::= { dlswNode 4 }

-- -------------------------------------------------------------------
-- DLSw Node Operational Objects
-- -------------------------------------------------------------------
dlswNodeStatus  OBJECT-TYPE
    SYNTAX     INTEGER  {
        active        (1),

        inactive      (2)
    }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
       "The status of the DLSw part of the system.  Changing the
        value from active to inactive causes DLSw to take
        the following actions - (1) it disconnects all circuits
        through all DLSw partners, (2) it disconnects all
        transport connections to all DLSw partners, (3) it
        disconnects all local DLC connections, and (4) it stops
        processing all DLC connection set-up traffic.
        Since these are destructive actions, the user should
        query the circuit and transport connection tables in
        advance to understand the effect this action will have.
        Changing the value from inactive to active causes DLSw
        to come up in its initial state, i.e., transport
        connections established and ready to bring up circuits."
    ::= { dlswNode 5 }

dlswNodeUpTime  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
        the DLSw portion of the system was last re-initialized.
        That is, if dlswState is in the active state,
        the time the dlswState entered the active state.
        It will remain zero if dlswState is in the
        inactive state."
    ::= { dlswNode 6 }

dlswNodeVirtualSegmentLFSize  OBJECT-TYPE
    SYNTAX     LFSize
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
       "The largest frame size (including DLC header and info field
        but not any MAC-level or framing octets) this DLSw can forward
        on any path through itself.  This object can represent any box-
        level frame size forwarding restriction (e.g., from the use
        of fixed-size buffers).  Some DLSw implementations will have
        no such restriction.

        This value will affect the LF size of circuits during circuit
        creation.  The LF size of an existing circuit can be found in

        the RIF (Routing Information Field)."
    DEFVAL  { lfs65535 }
    ::= { dlswNode 7 }

-- ...................................................................
-- NETBIOS Resources
-- ...................................................................

dlswNodeResourceNBExclusivity  OBJECT-TYPE
    SYNTAX     TruthValue
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
       "The value of true indicates that the NetBIOS Names
        configured in dlswDirNBTable are the only ones accessible
        via this DLSw.

        If a node supports sending run-time capabilities exchange
        messages, changes to this object should cause that action.
        It is up to the implementation exactly when to start the
        run-time capabilities exchange."
    ::= { dlswNode 8 }

-- ...................................................................
-- MAC Address List
-- ...................................................................

dlswNodeResourceMacExclusivity  OBJECT-TYPE
    SYNTAX     TruthValue
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
       "The value of true indicates that the MAC addresses
        configured in the dlswDirMacTable are the only ones
        accessible via this DLSw.

        If a node supports sending run-time capabilities exchange
        messages, changes to this object should cause that action.
        It is up to the implementation exactly when to start the
        run-time capabilities exchange."
    ::= { dlswNode 9 }


-- *******************************************************************
-- TRANSPORT CONNECTION (aka: PARTNER DLSW)
-- *******************************************************************

-- -------------------------------------------------------------------

-- Transport Connection Statistics Objects
-- -------------------------------------------------------------------
dlswTConnStat    OBJECT IDENTIFIER ::= { dlswTConn 1 }

dlswTConnStatActiveConnections  OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of transport connections that are not in
        `disconnected' state."
    ::= { dlswTConnStat 1 }

dlswTConnStatCloseIdles  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of times transport connections in this node
        exited the connected state with zero active circuits on
        the transport connection."
    ::= { dlswTConnStat 2 }

dlswTConnStatCloseBusys  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of times transport connections in this node
        exited the connected state with some non-zero number
        of active circuits on the transport connection.  Normally
        this means the transport connection failed unexpectedly."
    ::= { dlswTConnStat 3 }

-- -------------------------------------------------------------------
-- Transport Connection Configuration Table
-- -------------------------------------------------------------------
dlswTConnConfigTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswTConnConfigEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "This table defines the transport connections
        that will be initiated or accepted by this
        DLSw.  Structure of masks allows wildcard
        definition for a collection of transport
        connections by a conceptual row.  For a
        specific transport connection, there may

        be multiple of conceptual rows match the
        transport address.  The `best' match will
        the one to determine the characteristics
        of the transport connection."
    ::= { dlswTConn 2 }

dlswTConnConfigEntry  OBJECT-TYPE
    SYNTAX     DlswTConnConfigEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "Each conceptual row defines a collection of
        transport connections."
    INDEX   { dlswTConnConfigIndex }
    ::= { dlswTConnConfigTable 1 }

DlswTConnConfigEntry ::= SEQUENCE {
    dlswTConnConfigIndex              INTEGER,
    dlswTConnConfigTDomain            OBJECT IDENTIFIER,
    dlswTConnConfigLocalTAddr         TAddress,
    dlswTConnConfigRemoteTAddr        TAddress,
    dlswTConnConfigLastModifyTime     TimeTicks,
    dlswTConnConfigEntryType          INTEGER,
    dlswTConnConfigGroupDefinition    RowPointer,
    dlswTConnConfigSetupType          INTEGER,
    dlswTConnConfigSapList            OCTET STRING,
    dlswTConnConfigAdvertiseMacNB     TruthValue,
    dlswTConnConfigInitCirRecvWndw    INTEGER,
    dlswTConnConfigOpens              Counter32,
    dlswTConnConfigRowStatus          RowStatus
    }

dlswTConnConfigIndex  OBJECT-TYPE
    SYNTAX     INTEGER (0..2147483647)
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The index to the conceptual row of the table.
        Negative numbers are not allowed.  There
        are objects defined that point to conceptual
        rows of this table with this index value.
        Zero is used to denote that no corresponding
        row exists.

        Index values are assigned by the agent, and
        should not be reused but should continue to
        increase in value."
    ::= { dlswTConnConfigEntry 1 }

dlswTConnConfigTDomain  OBJECT-TYPE
    SYNTAX     OBJECT IDENTIFIER
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The object identifier which indicates the transport
        domain of this conceptual row."
    ::= { dlswTConnConfigEntry 2 }

dlswTConnConfigLocalTAddr  OBJECT-TYPE
    SYNTAX     TAddress
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The local transport address for this conceptual row
        of the transport connection definition."
    ::= { dlswTConnConfigEntry 3 }

dlswTConnConfigRemoteTAddr  OBJECT-TYPE
    SYNTAX     TAddress
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The remote transport address.  Together with
        dlswTConnConfigEntryType and dlswTConnConfigGroupDefinition,
        the object instance of this conceptual row identifies a
        collection of the transport connections that will be
        either initiated by this DLSw or initiated by a partner
        DLSw and accepted by this DLSw."
    ::= { dlswTConnConfigEntry 4 }

dlswTConnConfigLastModifyTime  OBJECT-TYPE
    SYNTAX     TimeTicks
    UNITS      "hundredths of a second"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The time (in hundredths of a second) since the value of
        any object in this conceptual row except for
        dlswTConnConfigOpens was last changed.  This value
        may be compared to dlswTConnOperConnectTime to
        determine whether values in this row are completely
        valid for a transport connection created using
        this row definition."
    ::= { dlswTConnConfigEntry 5 }

dlswTConnConfigEntryType  OBJECT-TYPE
    SYNTAX     INTEGER  {

        individual     (1),
        global         (2),
        group          (3)
    }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The object instance signifies the type of entry in the
        associated conceptual row.  The value of `individual'
        means that the entry applies to a specific partner DLSw
        node as identified by dlswTConnConfigRemoteTAddr and
        dlswTConnConfigTDomain.  The value of `global'
        means that the entry applies to all partner DLSw nodes
        of the TDomain.  The value of 'group' means that the entry
        applies to a specific set of DLSw nodes in the TDomain.
        Any group definitions are enterprise-specific and are pointed
        to by dlswTConnConfigGroupDefinition.  In the cases of
        `global' and `group', the value in dlswTConnConfigRemoteTAddr
        may not have any significance."
    ::= { dlswTConnConfigEntry 6 }

dlswTConnConfigGroupDefinition OBJECT-TYPE
    SYNTAX     RowPointer
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "For conceptual rows of `individual' and `global' as
        specified in dlswTConnConfigEntryType, the instance
        of this object is  `0.0'.  For conceptual rows of
        `group', the instance points to the specific
        group definition."
    ::= { dlswTConnConfigEntry 7 }

dlswTConnConfigSetupType  OBJECT-TYPE

    SYNTAX     INTEGER  {
        other              (1),
        activePersistent   (2),
        activeOnDemand     (3),
        passive            (4),
        excluded           (5)
    }
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "This value of the instance of a conceptual row
        identifies the behavior of the collection of
        transport connections that this conceptual row

        defines.  The value of activePersistent, activeOnDemand
        and passive means this DLSw will accept any transport
        connections, initiated by partner DLSw nodes, which
        are defined by this conceptual row.  The value of
        activePersistent means this DLSw will also initiate
        the transport connections of this conceptual row and
        retry periodically if necessary.  The value of
        activeOnDemand means this DLSw will initiate a
        transport connection of this conceptual row, if
        there is a directory cache hits.  The value of
        other is implementation specific.  The value of exclude
        means that the specified node is not allowed to be
        a partner to this DLSw node.  To take a certain
        conceptual row definition out of service, a value of
        notInService for dlswTConnConfigRowStatus should be
        used."
    DEFVAL  { passive }
    ::= { dlswTConnConfigEntry 8 }

dlswTConnConfigSapList  OBJECT-TYPE
    SYNTAX     OCTET STRING  (SIZE(16))
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The SAP list indicates which SAPs are advertised to
        the transport connection defined by this conceptual
        row.  Only SAPs with even numbers are represented,
        in the form of the most significant bit of the first
        octet representing the SAP 0, the next most significant
        bit representing the SAP 2, to the least significant
        bit of the last octet representing the SAP 254.  Data
        link switching is allowed for those SAPs which have
        one in its corresponding bit, not allowed otherwise.
        The whole SAP list has to be changed together.  Changing
        the SAP list affects only new circuit establishments
        and has no effect on established circuits.

        This list can be used to restrict specific partners
        from knowing about all the SAPs used by DLSw on all its
        interfaces (these are represented in dlswIfSapList for
        each interface).  For instance, one may want to run NetBIOS
        with some partners but not others.

        If a node supports sending run-time capabilities exchange
        messages, changes to this object should cause that action.
        When to start the run-time capabilities exchange is
        implementation-specific.

        The DEFVAL below indicates support for SAPs 0, 4, 8, and C."
    DEFVAL  { 'AA000000000000000000000000000000'H }
    ::= { dlswTConnConfigEntry 9 }

dlswTConnConfigAdvertiseMacNB  OBJECT-TYPE
    SYNTAX     TruthValue
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The value of true indicates that any defined local MAC
         addresses and NetBIOS names will be advertised to a
         partner node via initial and (if supported) run-time
         capabilities exchange messages.  The DLSw node should send
         the appropriate exclusivity control vector to accompany
         each list it sends, or to represent that the node is
         explicitly configured to have a null list.

         The value of false indicates that the DLSw node should not
         send a MAC address list or NetBIOS name list, and should
         also not send their corresponding exclusivity control
         vectors."
    DEFVAL  { true }
    ::= { dlswTConnConfigEntry 10 }

dlswTConnConfigInitCirRecvWndw  OBJECT-TYPE
    SYNTAX     INTEGER (0..65535)
    UNITS      "SSP messages"
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The initial circuit receive pacing window size, in the unit
        of SSP messages, to be used for future transport connections
        activated using this table row.  The managed node sends this
        value as its initial receive pacing window in its initial
        capabilities exchange message.  Changing this value does not
        affect the initial circuit receive pacing window size of
        currently active transport connections.  If the standard window
        pacing scheme is not supported, the value is zero.

        A larger receive window value may be appropriate for partners
        that are reachable only via physical paths that have longer
        network delays."
    DEFVAL  { 1 }
    ::= { dlswTConnConfigEntry 11 }

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

    STATUS     current
    DESCRIPTION
       "Number of times transport connections entered
        connected state according to the definition of
        this conceptual row."
    ::= { dlswTConnConfigEntry 12 }

dlswTConnConfigRowStatus  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 dlswTConnConfigTable
        following the RowStatus textual convention.  The value
        of notInService will be used to take a conceptual
        row definition out of use."
    ::= { dlswTConnConfigEntry 13 }

-- -------------------------------------------------------------------
-- Transport Connection Operation Table
-- -------------------------------------------------------------------
-- (1) At most one transport connection can be connected between
--     this DLSw and one of its DLSw partners at a given time.
-- (2) Multiple transport types are supported.
-- (3) Since the entries may be reused, dlswTConnOperEntryTime
--     needs to be consulted for the possibility of counter reset.
-- -------------------------------------------------------------------

dlswTConnOperTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswTConnOperEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "A list of transport connections.   It is optional but
        desirable for the agent to keep an entry for some
        period of time after the transport connection is
        disconnected.  This allows the manager to capture
        additional useful information about the connection, in
        particular, statistical information and the cause of the
        disconnection."
    ::= { dlswTConn 3 }

dlswTConnOperEntry  OBJECT-TYPE
    SYNTAX     DlswTConnOperEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION

       ""
    INDEX   { dlswTConnOperTDomain, dlswTConnOperRemoteTAddr }
    ::= { dlswTConnOperTable 1 }

DlswTConnOperEntry ::= SEQUENCE {
    dlswTConnOperTDomain                  OBJECT IDENTIFIER,
    dlswTConnOperLocalTAddr               TAddress,
    dlswTConnOperRemoteTAddr              TAddress,

    dlswTConnOperEntryTime                TimeTicks,
    dlswTConnOperConnectTime              TimeTicks,
    dlswTConnOperState                    INTEGER,
    dlswTConnOperConfigIndex              INTEGER,
    dlswTConnOperFlowCntlMode             INTEGER,

    dlswTConnOperPartnerVersion           OCTET STRING,
    dlswTConnOperPartnerVendorID          OCTET STRING,
    dlswTConnOperPartnerVersionStr        DisplayString,
    dlswTConnOperPartnerInitPacingWndw    INTEGER,

    dlswTConnOperPartnerSapList           OCTET STRING,
    dlswTConnOperPartnerNBExcl            TruthValue,
    dlswTConnOperPartnerMacExcl           TruthValue,
    dlswTConnOperPartnerNBInfo            INTEGER,
    dlswTConnOperPartnerMacInfo           INTEGER,

    dlswTConnOperDiscTime                 TimeTicks,
    dlswTConnOperDiscReason               INTEGER,
    dlswTConnOperDiscActiveCir            INTEGER,

    dlswTConnOperInDataPkts               Counter32,
    dlswTConnOperOutDataPkts              Counter32,
    dlswTConnOperInDataOctets             Counter32,
    dlswTConnOperOutDataOctets            Counter32,

    dlswTConnOperInCntlPkts               Counter32,
    dlswTConnOperOutCntlPkts              Counter32,

    dlswTConnOperCURexSents               Counter32,
    dlswTConnOperICRexRcvds               Counter32,
    dlswTConnOperCURexRcvds               Counter32,
    dlswTConnOperICRexSents               Counter32,

    dlswTConnOperNQexSents                Counter32,
    dlswTConnOperNRexRcvds                Counter32,
    dlswTConnOperNQexRcvds                Counter32,
    dlswTConnOperNRexSents                Counter32,

    dlswTConnOperCirCreates               Counter32,
    dlswTConnOperCircuits                 Gauge32
    }

dlswTConnOperTDomain  OBJECT-TYPE
    SYNTAX     OBJECT IDENTIFIER
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The object identifier indicates the transport domain
        of this transport connection."
    ::= { dlswTConnOperEntry 1 }

dlswTConnOperLocalTAddr  OBJECT-TYPE
    SYNTAX     TAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The local transport address for this transport connection.
        This value could be different from dlswTConnConfigLocalAddr,
        if the value of the latter were changed after this transport
        connection was established."
    ::= { dlswTConnOperEntry 2 }

dlswTConnOperRemoteTAddr  OBJECT-TYPE
    SYNTAX     TAddress
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The remote transport address of this transport connection."
    ::= { dlswTConnOperEntry 3 }

dlswTConnOperEntryTime  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
        transport connection conceptual row was created."
    ::= { dlswTConnOperEntry 4 }

-- ...................................................................
-- DLSw Transport Connection Operational Objects
-- ...................................................................

dlswTConnOperConnectTime  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
        transport connection last entered the 'connected' state.
        A value of zero means this transport connection has never
        been established."
    ::= { dlswTConnOperEntry 5 }

dlswTConnOperState  OBJECT-TYPE
    SYNTAX     INTEGER  {
        connecting         (1),
        initCapExchange    (2),
        connected          (3),
        quiescing          (4),
        disconnecting      (5),
        disconnected       (6)
    }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
       "The state of this transport connection.  The transport
        connection enters `connecting' state when DLSw makes
        a connection request to the transport layer.  Once initial
        Capabilities Exchange is sent, the transport connection
        enters enters `initCapExchange' state.  When partner
        capabilities have been determined and the transport
        connection is ready for sending CanUReach (CUR) messages,
        it moves to the `connected' state.  When DLSw is in the
        process of bringing down the connection, it is in the
        `disconnecting' state.  When the transport layer
        indicates one of its connections is disconnected, the
        transport connection moves to the `disconnected' state.

        Whereas all of the values will be returned in response
        to a management protocol retrieval operation, only two
        values may be specified in a management protocol set
        operation: `quiescing' and `disconnecting'.  Changing
        the value to `quiescing' prevents new circuits from being
        established, and will cause a transport disconnect when
        the last circuit on the connection goes away.  Changing
        the value to `disconnecting' will force off all circuits
        immediately and bring the connection to `disconnected'
        state."
    ::= { dlswTConnOperEntry 6 }

dlswTConnOperConfigIndex  OBJECT-TYPE

    SYNTAX     INTEGER (0..2147483647)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The value of dlswTConnConfigIndex of the dlswTConnConfigEntry
        that governs the configuration information used by this
        dlswTConnOperEntry.  The manager can therefore normally
        examine both configured and operational information
        for this transport connection.

        This value is zero if the corresponding dlswTConnConfigEntry
        was deleted after the creation of this dlswTConnOperEntry.
        If some fields in the former were changed but the conceptual
        row was not deleted, some configuration information may not
        be valid for this operational transport connection.  The
        manager can compare dlswTConnOperConnectTime and
        dlswTConnConfigLastModifyTime to determine if this condition
        exists."
    ::= { dlswTConnOperEntry 7 }

-- ...................................................................
-- Transport Connection Characteristics
-- ...................................................................

dlswTConnOperFlowCntlMode  OBJECT-TYPE
    SYNTAX     INTEGER  {
       undetermined   (1),
       pacing         (2),   -- DLSw standard flow control
       other          (3)    -- non-DLSw standard flow control
    }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The flow control mechanism in use on this transport connection.
        This value is undetermined (1) before the mode of flow control
        can be established on a new transport connection (i.e., after
        CapEx is sent but before Capex or other SSP control messages
        have been received).  Pacing (2) indicates that the standard
        RFC 1795 pacing mechanism is in use.  Other (3) may be either
        the RFC 1434+ xBusy mechanism operating to a back-level DLSw,
        or a vendor-specific flow control method.  Whether it is xBusy
        or not can be inferred from dlswTConnOperPartnerVersion."
    ::= { dlswTConnOperEntry 8 }

-- ...................................................................

dlswTConnOperPartnerVersion  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (0 | 2))

    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "This value identifies which version (first octet) and release
        (second octet) of the DLSw standard is supported by this
        partner DLSw. This information is obtained from a DLSw
        capabilities exchange message received from the partner DLSw.
        A string of zero length is returned before a Capabilities
        Exchange message is received, or if one is never received.
        A conceptual row with a dlswTConnOperState of `connected' but
        a zero length partner version indicates that the partner is
        a non-standard DLSw partner.

        If an implementation chooses to keep dlswTConnOperEntrys in
        the `disconnected' state, this value should remain unchanged."
    REFERENCE
       "DLSW: Switch-to-Switch Protocol RFC 1795"
    ::= { dlswTConnOperEntry 9 }

dlswTConnOperPartnerVendorID  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (0 | 3))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "This value identifies the IEEE-assigned organizationally
        Unique Identifier (OUI) of the maker of this partner
        DLSw.  This information is obtained from a DLSw
        capabilities exchange message received from the partner DLSw.
        A string of zero length is returned before a Capabilities
        Exchange message is received, or if one is never received.

        If an implementation chooses to keep dlswTConnOperEntrys in
        the `disconnected' state, this value should remain unchanged."
    ::= { dlswTConnOperEntry 10 }

dlswTConnOperPartnerVersionStr  OBJECT-TYPE
    SYNTAX     DisplayString (SIZE (0..253))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "This value identifies the particular product version (e.g.,
        product name, code level, fix level) of this partner DLSw.
        The format of the actual version string is vendor-specific.
        This information is obtained from a DLSw capabilities exchange
        message received from the partner DLSw.
        A string of zero length is returned before a Capabilities
        Exchange message is received, if one is never received, or
        if one is received but it does not contain a version string.

        If an implementation chooses to keep dlswTConnOperEntrys in
        the `disconnected' state, this value should remain unchanged."
    REFERENCE
       "DLSW: Switch-to-Switch Protocol RFC 1795"
    ::= { dlswTConnOperEntry 11 }

dlswTConnOperPartnerInitPacingWndw  OBJECT-TYPE
    SYNTAX     INTEGER (0..65535)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The value of the partner initial receive pacing window.  This
        is our initial send pacing window for all new circuits on this
        transport connection, as modified and granted by the first flow
        control indication the partner sends on each circuit.
        This information is obtained from a DLSw capabilities exchange
        message received from the partner DLSw.
        A value of zero is returned before a Capabilities
        Exchange message is received, or if one is never received.

        If an implementation chooses to keep dlswTConnOperEntrys in
        the `disconnected' state, this value should remain unchanged."
    REFERENCE
       "DLSW: Switch-to-Switch Protocol RFC 1795"
    ::= { dlswTConnOperEntry 12 }

-- ...................................................................

dlswTConnOperPartnerSapList  OBJECT-TYPE
    SYNTAX     OCTET STRING (SIZE (0 | 16))
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The Supported SAP List received in the capabilities
        exchange message from the partner DLSw.  This list has
        the same format described for dlswTConnConfigSapList.
        A string of zero length is returned before a Capabilities
        Exchange message is received, or if one is never received.

        If an implementation chooses to keep dlswTConnOperEntrys in
        the `disconnected' state, this value should remain unchanged."
    ::= { dlswTConnOperEntry 13 }

dlswTConnOperPartnerNBExcl  OBJECT-TYPE
    SYNTAX     TruthValue
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION

       "The value of true signifies that the NetBIOS names received
        from this partner in the NetBIOS name list in its capabilities
        exchange message are the only NetBIOS names reachable by
        that partner.  `False' indicates that other NetBIOS names may
        be reachable.  `False' should be returned before a Capabilities
        Exchange message is received, if one is never received, or if
        one is received without a NB Name Exclusivity CV.

        If an implementation chooses to keep dlswTConnOperEntrys in
        the `disconnected' state, this value should remain unchanged."
    ::= { dlswTConnOperEntry 14 }

dlswTConnOperPartnerMacExcl  OBJECT-TYPE
    SYNTAX     TruthValue
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The value of true signifies that the MAC addresses received
        from this partner in the MAC address list in its capabilities
        exchange message are the only MAC addresses reachable by
        that partner.  `False' indicates that other MAC addresses may
        be reachable.  `False' should be returned before a Capabilities
        Exchange message is received, if one is never received, or if
        one is received without a MAC Address Exclusivity CV.

        If an implementation chooses to keep dlswTConnOperEntrys in
        the `disconnected' state, this value should remain unchanged."
    ::= { dlswTConnOperEntry 15 }

dlswTConnOperPartnerNBInfo  OBJECT-TYPE
    SYNTAX     INTEGER  {
       none           (1),  -- none is kept
       partial        (2),  -- partial list is kept
       complete       (3),  -- complete list is kept
       notApplicable  (4)
    }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "It is up to this DSLw whether to keep either none, some,
        or all of the NetBIOS name list that was received in
        the capabilities exchange message sent by this partner DLSw.
        This object identifies how much information was kept by
        this DLSw.  These names are stored as userConfigured
        remote entries in dlswDirNBTable.
        A value of (4), notApplicable, should be returned before
        a Capabilities Exchange message is received, or if one is
        never received.

        If an implementation chooses to keep dlswTConnOperEntrys in
        the `disconnected' state, this value should remain unchanged."
    ::= { dlswTConnOperEntry 16 }

dlswTConnOperPartnerMacInfo  OBJECT-TYPE
    SYNTAX     INTEGER  {
       none           (1),  -- none is kept
       partial        (2),  -- partial list is kept
       complete       (3),  -- complete list is kept
       notApplicable  (4)
    }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "It is up to this DLSw whether to keep either none, some,
        or all of the MAC address list that was received in the
        capabilities exchange message sent by this partner DLSw.
        This object identifies how much information was kept by
        this DLSw.  These names are stored as userConfigured
        remote entries in dlswDirMACTable.
        A value of (4), notApplicable, should be returned before
        a Capabilities Exchange message is received, or if one is
        never received.

        If an implementation chooses to keep dlswTConnOperEntrys in
        the `disconnected' state, this value should remain unchanged."
    ::= { dlswTConnOperEntry 17 }

-- ...................................................................
-- Information about the last disconnect of this transport connection.
--   These objects make sense only for implementations that keep
--   transport connection information around after disconnection.
-- ...................................................................
dlswTConnOperDiscTime  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 the
        dlswTConnOperState last entered `disconnected' state."
    ::= { dlswTConnOperEntry 18 }

dlswTConnOperDiscReason  OBJECT-TYPE
    SYNTAX     INTEGER  {
        other              (1),
        capExFailed        (2),
        transportLayerDisc (3),

        operatorCommand    (4),
        lastCircuitDiscd   (5),
        protocolError      (6)
    }
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "This object signifies the reason that either prevented the
        transport connection from entering the connected state, or
        caused the transport connection to enter the disconnected
        state."
    ::= { dlswTConnOperEntry 19 }

dlswTConnOperDiscActiveCir  OBJECT-TYPE
    SYNTAX     INTEGER (0..2147483647)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of circuits active (not in DISCONNECTED state)
        at the time the transport connection was last disconnected.
        This value is zero if the transport connection has never
        been connected."
    ::= { dlswTConnOperEntry 20 }

-- ...................................................................
-- Transport Connection Statistics
-- (1) Traffic counts
-- ...................................................................
dlswTConnOperInDataPkts  OBJECT-TYPE
    SYNTAX     Counter32
    UNITS      "SSP messages"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of Switch-to-Switch Protocol (SSP) messages of
        type DGRMFRAME, DATAFRAME, or INFOFRAME received on this
        transport connection."
    ::= { dlswTConnOperEntry 21 }

dlswTConnOperOutDataPkts  OBJECT-TYPE
    SYNTAX     Counter32
    UNITS      "SSP messages"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of Switch-to-Switch Protocol (SSP) messages of
        type DGRMFRAME, DATAFRAME, or INFOFRAME transmitted on this
        transport connection."

    ::= { dlswTConnOperEntry 22 }

dlswTConnOperInDataOctets  OBJECT-TYPE
    SYNTAX     Counter32
    UNITS      "octets"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number octets in Switch-to-Switch Protocol (SSP) messages
        of type DGRMFRAME, DATAFRAME, or INFOFRAME received on this
        transport connection.  Each message is counted starting with
        the first octet following the SSP message header."
    ::= { dlswTConnOperEntry 23 }

dlswTConnOperOutDataOctets  OBJECT-TYPE
    SYNTAX     Counter32
    UNITS      "octets"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number octets in Switch-to-Switch Protocol (SSP) messages
        of type DGRMFRAME, DATAFRAME, or INFOFRAME transmitted on this
        transport connection.  Each message is counted starting with
        the first octet following the SSP message header."
    ::= { dlswTConnOperEntry 24 }

dlswTConnOperInCntlPkts  OBJECT-TYPE
    SYNTAX     Counter32
    UNITS      "SSP messages"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of Switch-to-Switch Protocol (SSP) messages
        received on this transport connection which were not of
        type DGRMFRAME, DATAFRAME, or INFOFRAME."
    ::= { dlswTConnOperEntry 25 }

dlswTConnOperOutCntlPkts  OBJECT-TYPE
    SYNTAX     Counter32
    UNITS      "SSP messages"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of Switch-to-Switch Protocol (SSP) messages of
        transmitted on this transport connection which were not of
        type DGRMFRAME, DATAFRAME, or INFOFRAME."
    ::= { dlswTConnOperEntry 26 }

-- ...................................................................
-- (2) Directory activities (Explorer messages)
-- ...................................................................

dlswTConnOperCURexSents  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of CanUReach_ex messages sent on this transport
        connection."
    ::= { dlswTConnOperEntry 27 }

dlswTConnOperICRexRcvds  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of ICanReach_ex messages received on this transport
        connection."
    ::= { dlswTConnOperEntry 28 }

dlswTConnOperCURexRcvds  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of CanUReach_ex messages received on this transport
        connection."
    ::= { dlswTConnOperEntry 29 }

dlswTConnOperICRexSents  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of ICanReach_ex messages sent on this transport
        connection."
    ::= { dlswTConnOperEntry 30 }

-- ...................................................................

dlswTConnOperNQexSents  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of NetBIOS_NQ_ex (NetBIOS Name Query-explorer)

        messages sent on this transport connection."
    ::= { dlswTConnOperEntry 31 }

dlswTConnOperNRexRcvds  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of NETBIOS_NR_ex (NetBIOS Name Recognized-explorer)
        messages received on this transport connection."
    ::= { dlswTConnOperEntry 32 }

dlswTConnOperNQexRcvds  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of NETBIOS_NQ_ex messages received on this
        transport connection."
    ::= { dlswTConnOperEntry 33 }

dlswTConnOperNRexSents  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of NETBIOS_NR_ex messages sent on this transport
        connection."
    ::= { dlswTConnOperEntry 34 }

-- ...................................................................
-- (3) Circuit activities on each transport connection
-- ...................................................................
dlswTConnOperCirCreates  OBJECT-TYPE
    SYNTAX     Counter32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of times that circuits entered `circuit_established'
        state (not counting transitions from `circuit_restart')."
    ::= { dlswTConnOperEntry 35 }

dlswTConnOperCircuits  OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The number of currently active circuits on this transport

        connection, where `active' means not in `disconnected' state."
    ::= { dlswTConnOperEntry 36 }


-- -------------------------------------------------------------------
-- Transport Connection Specific
-- -------------------------------------------------------------------
dlswTConnSpecific OBJECT IDENTIFIER ::= { dlswTConn 4 }
dlswTConnTcp      OBJECT IDENTIFIER ::= { dlswTConnSpecific 1 }

-- ...................................................................
-- TCP Transport Connection Specific -- Configuration
-- ...................................................................
dlswTConnTcpConfigTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswTConnTcpConfigEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "This table defines the TCP transport connections that
        will be either initiated by or accepted by this DSLw.
        It augments the entries in dlswTConnConfigTable whose domain
        is dlswTCPDomain."
    ::= { dlswTConnTcp 1 }

dlswTConnTcpConfigEntry  OBJECT-TYPE
    SYNTAX     DlswTConnTcpConfigEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "Each conceptual row defines parameters that are
        specific to dlswTCPDomain transport connections."
    INDEX   { dlswTConnConfigIndex }
    ::= { dlswTConnTcpConfigTable 1 }

DlswTConnTcpConfigEntry ::= SEQUENCE {
    dlswTConnTcpConfigKeepAliveInt       INTEGER,
    dlswTConnTcpConfigTcpConnections     INTEGER,
    dlswTConnTcpConfigMaxSegmentSize     INTEGER
    }

dlswTConnTcpConfigKeepAliveInt  OBJECT-TYPE
    SYNTAX     INTEGER (0..1800)
    UNITS      "seconds"
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The time in seconds between TCP keepAlive messages when
        no traffic is flowing.  Zero signifies no keepAlive protocol.

        Changes take effect only for new TCP connections."
    DEFVAL  { 0 }
    ::= { dlswTConnTcpConfigEntry 1 }

dlswTConnTcpConfigTcpConnections  OBJECT-TYPE
    SYNTAX     INTEGER (1..16)
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "This is our preferred number of TCP connections within a
        TCP transport connection.  The actual number used is negotiated
        at capabilities exchange time. Changes take effect only
        for new transport connections."
    DEFVAL  { 2 }
    ::= { dlswTConnTcpConfigEntry 2 }

dlswTConnTcpConfigMaxSegmentSize  OBJECT-TYPE
    SYNTAX     INTEGER (0..65535)
    UNITS      "packets"
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "This is the number of bytes that this node is
        willing to receive over the read TCP connection(s).
        Changes take effect for new transport connections."
    DEFVAL  { 4096 }
    ::= { dlswTConnTcpConfigEntry 3 }


-- ...................................................................
-- TCP Transport Connection Specific -- Operation
-- ...................................................................
dlswTConnTcpOperTable  OBJECT-TYPE
    SYNTAX     SEQUENCE OF DlswTConnTcpOperEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "A list of TCP transport connections.   It is optional
        but desirable for the agent to keep an entry for some
        period of time after the transport connection is
        disconnected.  This allows the manager to capture
        additional useful information about the connection, in
        particular, statistical information and the cause of the
        disconnection."
    ::= { dlswTConnTcp 2 }

dlswTConnTcpOperEntry  OBJECT-TYPE
    SYNTAX     DlswTConnTcpOperEntry

    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       ""
    INDEX   { dlswTConnOperTDomain, dlswTConnOperRemoteTAddr }
    ::= { dlswTConnTcpOperTable 1 }

DlswTConnTcpOperEntry ::= SEQUENCE {
    dlswTConnTcpOperKeepAliveInt             INTEGER,
    dlswTConnTcpOperPrefTcpConnections       INTEGER,
    dlswTConnTcpOperTcpConnections           INTEGER
    }

dlswTConnTcpOperKeepAliveInt  OBJECT-TYPE
    SYNTAX     INTEGER (0..1800)
    UNITS      "seconds"
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "The time in seconds between TCP keepAlive messages when
        no traffic is flowing.  Zero signifies no keepAlive protocol is
        operating."
    ::= { dlswTConnTcpOperEntry 1 }

dlswTConnTcpOperPrefTcpConnections  OBJECT-TYPE
    SYNTAX     INTEGER (1..16)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "This is the number of TCP connections preferred by this DLSw
        partner, as received in its capabilities exchange message."
    ::= { dlswTConnTcpOperEntry 2 }


dlswTConnTcpOperTcpConnections  OBJECT-TYPE
    SYNTAX     INTEGER (1..16)
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
       "This is the actual current number of TCP connections within
        this transport connection."
    ::= { dlswTConnTcpOperEntry 3 }

-- *******************************************************************
-- DLSW INTERFACE GROUP
-- *******************************************************************

dlswIfTable  OBJECT-TYPE

    SYNTAX     SEQUENCE OF DlswIfEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       "The list of interfaces on which DLSw is active."
    ::= { dlswInterface 1 }

dlswIfEntry  OBJECT-TYPE
    SYNTAX     DlswIfEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
       ""
    INDEX   { ifIndex }
    ::= { dlswIfTable 1 }

DlswIfEntry ::= SEQUENCE {
    dlswIfRowStatus      RowStatus,
    dlswIfVirtualSegment INTEGER,
    dlswIfSapList        OCTET STRING
    }

dlswIfRowStatus  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 dlswIfTable
        following the RowStatus textual convention."
    ::= { dlswIfEntry 1 }

dlswIfVirtualSegment  OBJECT-TYPE
    SYNTAX     INTEGER (0..4095 | 65535)
    MAX-ACCESS read-create
    STATUS     current
    DESCRIPTION
       "The segment number that uniquely identifies the virtual
        segment to which this DLSw interface is connected.
        Current source routing protocols limit this value to
        the range 0 - 4095. (The value 0 is used by some
        management applications for special test cases.)
        A value of 65535 signifies that no virtual segment
        is assigned to this interface.  For instance,
        in a non-source routing environment, segment number
        assignment is not required."
    DEFVAL { 65535 }
    ::= { dlswIfEntry 2 }