atm-mib

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               -- to the receive and transmit directions of
               -- the ATM virtual links (i.e., VPLs and VCLs).
               -- The ATM VPL or VCL table will indicate a row
               -- in the atmTrafficDescrParamTable
               -- using its atmTrafficDescrParamIndex value.
               -- The management application can then compare a set of
               -- ATM traffic parameters with a single value.

               -- If no suitable row(s) in the atmTrafficDescrParamTable
               -- exists, the manager must create a new row(s) in this
               -- table. If such a row is created, agent checks the
               -- sanity of that set of ATM traffic parameter values.

               -- When creating a new row, the parameter values
               -- will be checked for self-consistency.
               -- Predefined/template rows may be supported.

               -- A row in the atmTrafficDescrParamTable is deleted
               -- by setting the atmTrafficDescrRowStatus to destroy(6).
               -- The agent will check whether this row is still in use
               -- by any entry of the atmVplTable or atmVclTable.
               -- The agent denies the request if the row is still in
               -- use.

               --  The ATM Traffic Descriptor Parameter Table


               atmTrafficDescrParamTable    OBJECT-TYPE
                    SYNTAX      SEQUENCE OF AtmTrafficDescrParamEntry
                    MAX-ACCESS   not-accessible
                    STATUS       current
                    DESCRIPTION
                     "This table contains information on ATM traffic
                      descriptor type and the associated parameters."
                    ::= { atmMIBObjects 5}

               atmTrafficDescrParamEntry    OBJECT-TYPE
                    SYNTAX           AtmTrafficDescrParamEntry
                    MAX-ACCESS       not-accessible
                    STATUS           current
                    DESCRIPTION
                     "This list contains ATM traffic descriptor
                      type and the associated parameters."
                    INDEX  {atmTrafficDescrParamIndex}
                    ::= { atmTrafficDescrParamTable  1}

               AtmTrafficDescrParamEntry    ::= SEQUENCE  {
                 atmTrafficDescrParamIndex   AtmTrafficDescrParamIndex,
                 atmTrafficDescrType         OBJECT IDENTIFIER,
                 atmTrafficDescrParam1       Integer32,
                 atmTrafficDescrParam2       Integer32,
                 atmTrafficDescrParam3       Integer32,
                 atmTrafficDescrParam4       Integer32,
                 atmTrafficDescrParam5       Integer32,
                 atmTrafficQoSClass          INTEGER,
                 atmTrafficDescrRowStatus    RowStatus
                              }

               atmTrafficDescrParamIndex    OBJECT-TYPE
                    SYNTAX           AtmTrafficDescrParamIndex
                    MAX-ACCESS       not-accessible
                    STATUS        current
                    DESCRIPTION
                     "This object is used by the virtual link
                      table (i.e., VPL or VCL table)
                      to identify the row of this table."
                    ::= { atmTrafficDescrParamEntry  1}

               atmTrafficDescrType    OBJECT-TYPE
                    SYNTAX             OBJECT IDENTIFIER
                    MAX-ACCESS         read-create
                    STATUS             current
                    DESCRIPTION
                     "The value of this object identifies the type
                      of ATM traffic descriptor.
                      The type may indicate no traffic descriptor or
                      traffic descriptor with one or more parameters.
                      These parameters are specified as a parameter
                      vector, in the corresponding instances of the
                      objects:
                          atmTrafficDescrParam1
                          atmTrafficDescrParam2
                          atmTrafficDescrParam3
                          atmTrafficDescrParam4
                          atmTrafficDescrParam5."
                     DEFVAL  { atmNoTrafficDescriptor }
                     ::= { atmTrafficDescrParamEntry 2}

               atmTrafficDescrParam1    OBJECT-TYPE
                    SYNTAX             Integer32
                    MAX-ACCESS          read-create
                    STATUS              current
                    DESCRIPTION
                     "The first parameter of the ATM traffic descriptor
                      used according to the value of
                      atmTrafficDescrType."
                    DEFVAL  { 0 }
                    ::= { atmTrafficDescrParamEntry 3}

               atmTrafficDescrParam2    OBJECT-TYPE
                    SYNTAX             Integer32
                    MAX-ACCESS          read-create
                    STATUS              current
                    DESCRIPTION
                     "The second parameter of the ATM traffic descriptor
                      used according to the value of
                      atmTrafficDescrType."
                    DEFVAL  { 0 }
                    ::= { atmTrafficDescrParamEntry 4}

               atmTrafficDescrParam3    OBJECT-TYPE
                    SYNTAX             Integer32
                    MAX-ACCESS          read-create
                    STATUS              current
                    DESCRIPTION
                     "The third parameter of the ATM traffic descriptor
                      used according to the value of
                      atmTrafficDescrType."
                    DEFVAL  { 0 }
                    ::= { atmTrafficDescrParamEntry 5}

               atmTrafficDescrParam4    OBJECT-TYPE
                    SYNTAX             Integer32
                    MAX-ACCESS          read-create
                    STATUS              current
                    DESCRIPTION
                     "The fourth parameter of the ATM traffic descriptor
                      used according to the value of
                      atmTrafficDescrType."
                    DEFVAL  { 0 }
                    ::= { atmTrafficDescrParamEntry 6}

               atmTrafficDescrParam5    OBJECT-TYPE
                    SYNTAX             Integer32
                    MAX-ACCESS          read-create
                    STATUS              current
                    DESCRIPTION
                     "The fifth parameter of the ATM traffic descriptor
                      used according to the value of
                      atmTrafficDescrType."
                    DEFVAL  { 0 }
                    ::= { atmTrafficDescrParamEntry 7}

               atmTrafficQoSClass   OBJECT-TYPE
                    SYNTAX         INTEGER (0..255)
                    MAX-ACCESS      read-create
                    STATUS          current
                    DESCRIPTION
                     "The value of this object identifies the QoS Class.
                      Four Service classes have been
                      specified in the ATM Forum UNI Specification:
                      Service Class A: Constant bit rate video and
                                       Circuit emulation
                      Service Class B: Variable bit rate video/audio
                      Service Class C: Connection-oriented data
                      Service Class D: Connectionless data
                      Four QoS classes numbered 1, 2, 3, and 4 have
                      been specified with the aim to support service
                      classes A, B, C, and D respectively.
                      An unspecified QoS Class numbered `0' is used
                      for best effort traffic."
                    DEFVAL  { 0 }
                    ::= { atmTrafficDescrParamEntry 8}


               atmTrafficDescrRowStatus       OBJECT-TYPE
                    SYNTAX    RowStatus
                    MAX-ACCESS   read-create
                    STATUS          current
                    DESCRIPTION
                     "This object is used to create
                      a new row or modify or delete an
                      existing row in this table."
                    DEFVAL  { active }
                    ::= {atmTrafficDescrParamEntry 9}


               --  ATM Interface Virtual Path Link (VPL) Group

               -- This group contains configuration and state
               -- information of a bi-directional Virtual Path Link
               -- (VPL)

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

               -- In the example below, the traffic flows on the receive
               -- and transmit directions of the VPLs are characterized
               -- by atmVplReceiveTrafficDescrIndex and
               -- atmVplTransmitTrafficDescrIndex respectively.
               -- The cross-connected VPLs are identified by
               -- atmVplCrossConnectIdentifier.



               --           ________________________________
               --           |                              |
               --  VPL      | ATM Host, Switch, or Network |   VPL
               -- receive   |                              |  receive
               -- ========> X                              X <=======
               -- <======== X                              X ========>
               -- transmit  |                              |  transmit
               --           |______________________________|



               --  The ATM Interface VPL Table


               atmVplTable    OBJECT-TYPE
                    SYNTAX      SEQUENCE OF AtmVplEntry
                    MAX-ACCESS   not-accessible
                    STATUS       current
                    DESCRIPTION
                     "The Virtual Path Link (VPL) table.  A
                      bi-directional VPL is modeled as one entry
                      in this table."
                    ::= { atmMIBObjects 6}

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

                    (1) The management application creates
                        a VPL entry in the atmVplTable
                        by setting atmVplRowStatus to createAndWait(5).
                        This may fail for the following reasons:
                        - The selected VPI value is unavailable,
                        - The selected VPI value is in use.
                        Otherwise, the agent creates a row and
                        reserves the VPI value 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 VPL.

                   (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 VPL's traffic
                        parameters through setting the
                        atmVplReceiveTrafficDescrIndex and the
                        atmVplTransmitTrafficDescrIndex values
                        in the VPL 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 VPL by setting the
                        the atmVplRowStatus 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 VPL.
                    (4) If the VPL terminates a VPC in the ATM host
                        or switch, the manager turns on the
                        atmVplAdminStatus to up(1) to turn the VPL
                        traffic flow on.  Otherwise, the
                        atmVpCrossConnectTable  must be used