atm-mib

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                        to cross-connect the VPL to another VPL(s)
                        in an ATM switch or network.

                      One-Shot VPL Establishment

                      A VPL may also be established in one step by a
                      set-request with all necessary VPL parameter
                      values and atmVplRowStatus set to createAndGo(4).

                      In contrast to the negotiated VPL establishment
                      which allows for detailed error checking
                      (i.e., set errors are explicitly linked to
                      particular resource acquisition failures),
                      the one-shot VPL establishment
                      performs the setup on one operation but
                      does not have the advantage of step-wise
                      error checking.

                      VPL Retirement

                      A VPL is released by setting atmVplRowStatus to
                      destroy(6), and the agent may release all
                      associated resources."
                    INDEX  {ifIndex, atmVplVpi }
                    ::= { atmVplTable  1}

               AtmVplEntry    ::= SEQUENCE  {
                    atmVplVpi                       INTEGER,
                    atmVplAdminStatus               INTEGER,
                    atmVplOperStatus                INTEGER,
                    atmVplLastChange                TimeStamp,
                    atmVplReceiveTrafficDescrIndex
                                    AtmTrafficDescrParamIndex,
                    atmVplTransmitTrafficDescrIndex
                                    AtmTrafficDescrParamIndex,
                    atmVplCrossConnectIdentifier    INTEGER,
                    atmVplRowStatus                 RowStatus
                       }


               atmVplVpi    OBJECT-TYPE
                    SYNTAX    INTEGER  (1..4095)
                    MAX-ACCESS     not-accessible
                    STATUS         current
                    DESCRIPTION
                     "The VPI value of the VPL.
                      Note that the VPI=0 is not used
                      for a VPL not associated with a VCL.
                      The maximum VPI value cannot
                      exceed the value allowable by the
                      atmInterfaceMaxVpiBits."
                    ::= { atmVplEntry 1}

               atmVplAdminStatus   OBJECT-TYPE
                    SYNTAX   INTEGER  {
                                       up(1),
                                       down(2)
                                           }
                    MAX-ACCESS   read-create
                    STATUS       current
                    DESCRIPTION
                     "This object is implemented only for a VPL which
                      terminates a VPC (i.e.,
                      one which is NOT cross-connected to other VPLs).
                      Its value specifies the desired administrative
                      state of the VPL.  The up and down states indicate
                      that the traffic flow is enabled and disabled
                      respectively for this VPL."
                    DEFVAL { down }
                    ::= { atmVplEntry 2}


               atmVplOperStatus   OBJECT-TYPE
                    SYNTAX   INTEGER  {
                                       up(1),
                                       down(2),
                                       unknown(3)
                                           }
                    MAX-ACCESS   read-only
                    STATUS       current
                    DESCRIPTION
                     "This object indicates the current operational
                      status of the VPL.  The up and down states
                      indicate that the VPL is currently
                      operational, or not operational, respectively.
                      The unknown state indicates that the status of
                      this VPL cannot be determined."
                    ::= { atmVplEntry 3}

               atmVplLastChange     OBJECT-TYPE
                    SYNTAX  TimeStamp
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "The value of MIB II's sysUpTime object
                      at the time this VPL entered its current
                      operational state.  If the current state was
                      entered prior to the last re-initialization of the
                      agent, then this object contains a zero value."
                    ::= { atmVplEntry 4 }

               atmVplReceiveTrafficDescrIndex    OBJECT-TYPE
                    SYNTAX             AtmTrafficDescrParamIndex
                    MAX-ACCESS         read-create
                    STATUS             current
                    DESCRIPTION
                     "The value of this object identifies the row
                      in the atmTrafficDescrParamTable which
                      applies to the receive direction of the VPL."
                     ::= { atmVplEntry 5}

               atmVplTransmitTrafficDescrIndex    OBJECT-TYPE
                    SYNTAX             AtmTrafficDescrParamIndex
                    MAX-ACCESS         read-create
                    STATUS             current
                    DESCRIPTION
                     "The value of this object identifies the row
                      in the atmTrafficDescrParamTable which
                      applies to the transmit direction of the VPL."
                     ::= { atmVplEntry 6}

               atmVplCrossConnectIdentifier   OBJECT-TYPE
                    SYNTAX         INTEGER (0..2147483647)
                    MAX-ACCESS      read-only
                    STATUS          current
                    DESCRIPTION
                     "This object is implemented only for a VPL
                      which is cross-connected to other VPLs
                      that belong to the same VPC.  All such
                      associated VPLs have the same value of this
                      object, and all their cross-connections are
                      identified by entries in the
                      atmVpCrossConnectTable for which
                      atmVpCrossConnectIndex has the same value.
                      The value of this object is initialized by the
                      agent after the associated entries in the
                      atmVpCrossConnectTable have been created."
                    ::= {atmVplEntry 7}

               atmVplRowStatus       OBJECT-TYPE
                    SYNTAX    RowStatus
                    MAX-ACCESS   read-create
                    STATUS          current
                    DESCRIPTION
                     "This object is used to create, delete
                      or modify a row in this table.
                      To create a new VCL, this object is
                      initially set to 'createAndWait' or
                      'createAndGo'.  This object must not be
                      set to 'active' unless the following columnar
                      objects exist in this row:
                      atmVplReceiveTrafficDescrIndex and
                      atmVplTransmitTrafficDescrIndex."
                    DEFVAL { active }
                    ::= {atmVplEntry 8}


               --  ATM Interface Virtual Channel Link (VCL) Group

               -- This group contains configuration and state
               -- information of a bi-directional Virtual Channel
               -- Link (VCL) at an ATM interface.

               -- This table can be used to create, delete or modify
               -- a VCL that is terminated in an ATM host or switch.
               -- This table can also be
               -- used to create, delete or modify a VCL that is
               -- cross-connected to another VCL.


               --  The ATM Interface VCL Table


               atmVclTable    OBJECT-TYPE
                    SYNTAX      SEQUENCE OF AtmVclEntry
                    MAX-ACCESS   not-accessible
                    STATUS       current
                    DESCRIPTION
                     "The Virtual Channel Link (VCL) table.  A
                      bi-directional VCL is modeled as one entry
                      in this table."
                    ::= { atmMIBObjects 7}

               atmVclEntry    OBJECT-TYPE
                    SYNTAX           AtmVclEntry
                    MAX-ACCESS       not-accessible
                    STATUS           current
                    DESCRIPTION
                     "An entry in the VCL table.  This entry is
                      used to model a bi-directional VCL.
                      To create a VCL at an ATM interface,
                      either of the following procedures are used:

                      Negotiated VCL establishment

                    (1) The management application creates
                        a VCL entry in the atmVclTable
                        by setting atmVclRowStatus to createAndWait(5).
                        This may fail for the following reasons:
                        - The selected VPI/VCI values are unavailable,
                        - The selected VPI/VCI values are in use.
                        Otherwise, the agent creates a row and
                        reserves the VPI/VCI values on that port.

                    (2) The manager selects an existing row(s) in the
                        atmTrafficDescrParamTable,
                        thereby, selecting a set of self-consistent
                        ATM traffic parameters and the QoS Class
                        for receive and transmit directions of the VCL.

                   (2a) If no suitable row(s) in the
                        atmTrafficDescrParamTable exists,
                        the manager must create a new row(s)
                        in that table.

                   (2b) The manager characterizes the VCL's traffic
                        parameters through setting the
                        atmVclReceiveTrafficDescrIndex and the
                        atmVclTransmitTrafficDescrIndex values
                        in the VCL table, which point to the rows
                        containing desired ATM traffic parameter values
                        in the atmTrafficDescrParamTable.  The agent
                        will check the availability of resources and
                        may refuse the request.

                    (3) The manager activates the VCL by setting the
                        the atmVclRowStatus to active(1).
                        If this set is successful, the agent has
                        reserved the resources to satisfy the requested
                        traffic parameter values and the QoS Class
                        for that VCL.
                    (4) If the VCL terminates a VCC in the ATM host
                        or switch, the manager turns on the
                        atmVclAdminStatus to up(1) to turn the VCL
                        traffic flow on.  Otherwise, the
                        atmVcCrossConnectTable  must be used
                        to cross-connect the VCL to another VCL(s)
                        in an ATM switch or network.

                     One-Shot VCL Establishment

                     A VCL may also be established in one step by a
                     set-request with all necessary VCL parameter
                     values and atmVclRowStatus set to createAndGo(4).
                     In contrast to the negotiated VCL establishment
                     which allows for detailed error checking
                     (i.e., set errors are explicitly linked to
                     particular resource acquisition failures),
                     the one-shot VCL establishment
                     performs the setup on one operation but
                     does not have the advantage of step-wise
                     error checking.

                     VCL Retirement

                     A VCL is released by setting atmVclRowStatus to
                     destroy(6), and the agent may release all
                     associated resources."
                    INDEX  {ifIndex, atmVclVpi, atmVclVci }
                    ::= { atmVclTable  1}

               AtmVclEntry    ::= SEQUENCE  {
                    atmVclVpi                       INTEGER,
                    atmVclVci                       INTEGER,
                    atmVclAdminStatus               INTEGER,
                    atmVclOperStatus                INTEGER,
                    atmVclLastChange                TimeStamp,
                    atmVclReceiveTrafficDescrIndex
                                    AtmTrafficDescrParamIndex,
                    atmVclTransmitTrafficDescrIndex
                                    AtmTrafficDescrParamIndex,
                    atmVccAalType                   INTEGER,
                    atmVccAal5CpcsTransmitSduSize   INTEGER,
                    atmVccAal5CpcsReceiveSduSize    INTEGER,