tech-invite   World Map     

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

RFC 1695

 
 
 

Definitions of Managed Objects for ATM Management Version 8.0 using SMIv2

Part 3 of 3, p. 45 to 73
Prev RFC Part

 


prevText      Top      Up      ToC       Page 45 
               --     ATM Virtual Path (VP) Cross Connect Group

               -- This group contains configuration and state
               -- information of all point-to-point,
               -- point-to-multipoint, or multipoint-to-multipoint
               -- VP cross-connects.

               -- This table has read-create access and can be used
               -- to cross-connect the VPLs together in an ATM switch
               -- or network. The atmVpCrossConnectIndex
               -- is used to associate the related
               -- VPLs that are cross-connected together.

               -- The ATM VP Cross Connect Group
               -- models each bi-directional VPC
               -- cross-connect as a set of entries in
               -- the atmVpCrossConnectTable. A
               -- point-to-point VPC cross-connect is modeled
               -- as one entry; a point-to-multipoint (N leafs) VPC
               -- cross-connect as N entries in this table; and
               -- a multipoint-to-multipoint (N parties) VPC cross-
               -- connect as N(N-1)/2 entries in this table.
               -- In the latter cases, all the N (or N(N-1)/2) entries
               -- are associated with a single VPC cross-connect by
               -- having the same value of atmVpCrossConnectIndex.


               --      _________________________________________
               --      |                                       |
               --  Low |         ATM Switch or Network         | High
               --  port|                                       | port
               -- _____|>> from low to high VPC traffic flow >>|______
               --      |<< from high to low VPC traffic flow <<|
               --      |                                       |
               --      |_______________________________________|
               --

               -- The terms low and high are chosen to represent
               -- numerical ordering of the two interfaces associated
               -- with a VPC cross-connect. That is, the ATM interface
               -- with the lower value of ifIndex is termed 'low',
               -- while the other ATM interface associated with the
               -- VPC cross-connect is termed 'high'. This terminology
               -- is used to provide directional information; for
               -- example, the atmVpCrossConnectL2HOperStatus applies
               -- to the low->high direction, and
               -- atmVpCrossConnectH2LOperStatus applies to the
               -- high->low  direction, as illustrated above.

Top      Up      ToC       Page 46 
               atmVpCrossConnectIndexNext    OBJECT-TYPE
                    SYNTAX  INTEGER (0..2147483647)
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "This object contains an appropriate value to
                      be used for atmVpCrossConnectIndex when creating
                      entries in the atmVpCrossConnectTable.  The value
                      0 indicates that no unassigned entries are
                      available. To obtain the atmVpCrossConnectIndex
                      value for a new entry, the manager issues a
                      management protocol retrieval operation to obtain
                      the current value of this object.  After each
                      retrieval, the agent should modify the value to
                      the next unassigned index."
                    ::= { atmMIBObjects 8 }


               --  The ATM VP Cross Connect Table


               atmVpCrossConnectTable OBJECT-TYPE
                    SYNTAX  SEQUENCE OF AtmVpCrossConnectEntry
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The ATM VP Cross Connect table.  A bi-
                      directional VP cross-connect which
                      cross-connects two VPLs is modeled
                      as one entry in this table."
                    ::= { atmMIBObjects 9 }


               atmVpCrossConnectEntry OBJECT-TYPE
                    SYNTAX  AtmVpCrossConnectEntry
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "An entry in the ATM VP Cross Connect table.
                      This entry is used to model a bi-directional
                      ATM VP cross-connect which cross-connects
                      two VPLs.

                      Step-wise Procedures to set up a VP Cross-connect

                      Once the entries in the atmVplTable are created,
                      the following procedures are used
                      to cross-connect the VPLs together.

Top      Up      ToC       Page 47 
                     (1) The manager obtains a unique
                         atmVpCrossConnectIndex by reading the
                         atmVpCrossConnectIndexNext object.

                     (2) Next, the manager creates a set of one
                         or more rows in the ATM VP Cross Connect
                         Table, one for each cross-connection between
                         two VPLs.  Each row is indexed by the ATM
                         interface port numbers and VPI values of the
                         two ends of that cross-connection.
                         This set of rows specifies the topology of the
                         VPC cross-connect and is identified by a single
                         value of atmVpCrossConnectIndex.

                      Negotiated VP Cross-Connect Establishment

                    (2a) The manager creates a row in this table by
                         setting atmVpCrossConnectRowStatus to
                         createAndWait(5).  The agent checks the
                         requested topology and the mutual sanity of
                         the ATM traffic parameters and
                         QoS Classes, i.e., the row creation fails if:
                         - the requested topology is not supported
                           by the agent,
                         - the traffic/QoS parameter values
                           associated with the requested row are
                           incompatible with those of already existing
                           rows for this VP cross-connect.
                         [For example, for setting up
                         a point-to-point VP cross-connect, the
                         ATM traffic parameters in the receive direction
                         of a VPL at the low end of the cross-connect
                         must equal to the traffic parameters in the
                         transmit direction of the other VPL at the
                         high end of the cross-connect,
                         otherwise, the row creation fails.]
                         The agent also checks for internal errors
                         in building the cross-connect.

                         The atmVpCrossConnectIndex values in the
                         corresponding atmVplTable rows are filled
                         in by the agent at this point.

                    (2b) The manager promotes the row in the
                         atmVpCrossConnectTable by setting
                         atmVpCrossConnectRowStatus to active(1).  If
                         this set is successful, the agent has reserved
                         the resources specified by the ATM traffic

Top      Up      ToC       Page 48 
                         parameter and QoS Class values
                         for each direction of the VP cross-connect
                         in an ATM switch or network.

                     (3) The manager sets the
                         atmVpCrossConnectAdminStatus to up(1) in all
                         rows of this VP cross-connect to turn the
                         traffic flow on.


                      One-Shot VP Cross-Connect Establishment

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

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

                      VP Cross-Connect Retirement

                      A VP cross-connect identified by a particular
                      value of atmVpCrossConnectIndex is released by:

                     (1) Setting atmVpCrossConnectRowStatus of all
                         rows identified by this value of
                         atmVpCrossConnectIndex to destroy(6).
                         The agent may release all
                         associated resources, and the
                         atmVpCrossConnectIndex values in the
                         corresponding atmVplTable row are removed.
                         Note that a situation when only a subset of
                         the associated rows are deleted corresponds
                         to a VP topology change.

                     (2) After deletion of the appropriate
                         atmVpCrossConnectEntries, the manager may
                         set atmVplRowStatus to destroy(6) the
                         associated VPLs.  The agent releases
                         the resources and removes the associated
                         rows in the atmVplTable.

Top      Up      ToC       Page 49 
                      VP Cross-connect Reconfiguration

                      At the discretion of the agent, a VP
                      cross-connect may be reconfigured by
                      adding and/or deleting leafs to/from
                      the VP topology as per the VP cross-connect
                      establishment/retirement procedures.
                      Reconfiguration of traffic/QoS parameter
                      values requires release of the VP cross-connect
                      before those parameter values may by changed
                      for individual VPLs."
                    INDEX { atmVpCrossConnectIndex,
                          atmVpCrossConnectLowIfIndex,
                          atmVpCrossConnectLowVpi,
                          atmVpCrossConnectHighIfIndex,
                          atmVpCrossConnectHighVpi }
                    ::= { atmVpCrossConnectTable 1 }

               AtmVpCrossConnectEntry ::= SEQUENCE {
                    atmVpCrossConnectIndex          INTEGER,
                    atmVpCrossConnectLowIfIndex     IfIndex,
                    atmVpCrossConnectLowVpi         INTEGER,
                    atmVpCrossConnectHighIfIndex    IfIndex,
                    atmVpCrossConnectHighVpi        INTEGER,
                    atmVpCrossConnectAdminStatus    INTEGER,
                    atmVpCrossConnectL2HOperStatus  INTEGER,
                    atmVpCrossConnectH2LOperStatus  INTEGER,
                    atmVpCrossConnectL2HLastChange  TimeStamp,
                    atmVpCrossConnectH2LLastChange  TimeStamp,
                    atmVpCrossConnectRowStatus      RowStatus
                            }

               atmVpCrossConnectIndex OBJECT-TYPE
                    SYNTAX  INTEGER (1..2147483647)
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "A unique value to identify this VP cross-connect."
                    ::= { atmVpCrossConnectEntry 1 }

               atmVpCrossConnectLowIfIndex OBJECT-TYPE
                    SYNTAX  IfIndex
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to MIB II's
                      ifIndex value of the ATM interface port for this
                      VP cross-connect.  The term low implies

Top      Up      ToC       Page 50 
                      that this ATM interface has the numerically lower
                      ifIndex value than the other ATM interface
                      identified in the same atmVpCrossConnectEntry."
                    ::= { atmVpCrossConnectEntry 2 }

               atmVpCrossConnectLowVpi OBJECT-TYPE
                    SYNTAX  INTEGER  (1..4095)
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to the VPI
                      value at the ATM interface
                      associated with the VP cross-connect that is
                      identified by atmVpCrossConnectLowIfIndex.
                      The VPI value cannot exceed the number
                      supported by the atmInterfaceMaxVpiBits
                      at the low ATM interface port."
                    ::= { atmVpCrossConnectEntry 3 }

               atmVpCrossConnectHighIfIndex OBJECT-TYPE
                    SYNTAX  IfIndex
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to MIB II's
                      ifIndex value of the ATM interface port for
                      this VP cross-connect.  The term high
                      implies that this ATM interface has the
                      numerically higher ifIndex value than the
                      other ATM interface identified in the same
                      atmVpCrossConnectEntry."
                    ::= { atmVpCrossConnectEntry 4 }

               atmVpCrossConnectHighVpi OBJECT-TYPE
                    SYNTAX  INTEGER   (1..4095)
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to the VPI
                      value at the ATM interface associated with
                      the VP cross-connect that is identified
                      by atmVpCrossConnectHighIfIndex.
                      The VPI value cannot exceed the number
                      supported by the atmInterfaceMaxVpiBits
                      at the high ATM interface port."
                    ::= { atmVpCrossConnectEntry 5 }

               atmVpCrossConnectAdminStatus OBJECT-TYPE

Top      Up      ToC       Page 51 
                    SYNTAX  INTEGER {
                                    up(1),
                                    down(2)
                            }
                    MAX-ACCESS  read-create
                    STATUS  current
                    DESCRIPTION
                     "The value of this object identifies the desired
                      administrative status of this bi-directional
                      VP cross-connect.  The up and down states
                      indicate that the traffic flow is enabled
                      and disabled respectively on this VP
                      cross-connect."
                    DEFVAL { down }
                    ::= { atmVpCrossConnectEntry 6 }

               atmVpCrossConnectL2HOperStatus OBJECT-TYPE
                    SYNTAX  INTEGER {
                              up(1),
                              down(2),
                              unknown(3)
                                }
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "The value of this object identifies the current
                      operational status of the VP cross-connect
                      in one direction; (i.e., from the low to
                      high direction).  The up and down states indicate
                      that this ATM VP cross-connect from low
                      to high direction is operational or not
                      operational respectively.
                      The unknown state indicates that
                      the state of it cannot be determined."
                    ::= { atmVpCrossConnectEntry 7 }

               atmVpCrossConnectH2LOperStatus OBJECT-TYPE
                    SYNTAX  INTEGER {
                              up(1),
                              down(2),
                              unknown(3)
                                 }
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "The value of this object identifies the current
                      operational status of the VP cross-connect
                      in one direction; (i.e., from the high to

Top      Up      ToC       Page 52 
                      low direction).  The up and down states indicate
                      that this ATM VP cross-connect from high
                      to low direction is operational or not
                      operational respectively.  The
                      unknown state indicates that the state
                      of it cannot be determined."
                    ::= { atmVpCrossConnectEntry 8 }

               atmVpCrossConnectL2HLastChange OBJECT-TYPE
                    SYNTAX  TimeStamp
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "The value of MIB II's sysUpTime object
                      at the time this VP cross-connect entered
                      its current operational state in the low to
                      high direction.  If the current state was
                      entered prior to the last re-initialization of the
                      agent, then this object contains a zero value."
                    ::= { atmVpCrossConnectEntry 9 }

               atmVpCrossConnectH2LLastChange OBJECT-TYPE
                    SYNTAX  TimeStamp
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "The value of MIB II's sysUpTime object at the
                      time this VP cross-connect entered its current
                      operational state in the high to low direction.
                      If the current state was entered prior to the
                      last re-initialization of the agent,
                      then this object contains a zero value."
                    ::= { atmVpCrossConnectEntry 10 }

               atmVpCrossConnectRowStatus OBJECT-TYPE
                    SYNTAX  RowStatus
                    MAX-ACCESS  read-create
                    STATUS  current
                    DESCRIPTION
                     "The status of this entry in the
                      atmVpCrossConnectTable.  This object is used to
                      create a cross-connect for cross-connecting
                      VPLs which are created using the atmVplTable
                      or to change or delete an existing cross-connect.
                      This object must be initially set
                      to `createAndWait' or 'createAndGo'.
                      This object cannot be set to `active'
                      unless the following columnar object exists

Top      Up      ToC       Page 53 
                      in this row: atmVpCrossConnectAdminStatus.
                      To turn on a VP cross-connect,
                      the atmVpCrossConnectAdminStatus
                      is set to `up'."
                    DEFVAL { active }
                    ::= { atmVpCrossConnectEntry 11 }


               --     ATM Virtual Channel (VC) Cross Connect Group

               -- This group contains configuration and state
               -- information of a bi-directional VC cross-connect.

               -- This group is used to model a bi-directional
               -- point-to-point, point-to-multipoint or
               -- multipoint-to-multipoint VC cross-connects.

               -- This table has read-create access and is used
               -- to cross-connect the VCLs together in an ATM switch
               -- or network that belong to a VC connection.
               -- The atmVcCrossConnectIndex is used to associate
               -- the related VCLs that are cross-connected together.


               -- The step-wise procedures described for setting
               -- up a VP cross-connect are also used for setting up
               -- a VC cross-connect.


               atmVcCrossConnectIndexNext    OBJECT-TYPE
                    SYNTAX  INTEGER (0..2147483647)
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "This object contains an appropriate value to
                      be used for atmVcCrossConnectIndex when creating
                      entries in the atmVcCrossConnectTable.  The value
                      0 indicates that no unassigned entries are
                      available. To obtain the atmVpCrossConnectIndex
                      value for a new entry, the manager issues a
                      management protocol retrieval operation to obtain
                      the current value of this object.  After each
                      retrieval, the agent should modify the value to
                      the next unassigned index."
                    ::= { atmMIBObjects 10 }


               --  The ATM VC Cross Connect Table

Top      Up      ToC       Page 54 
               atmVcCrossConnectTable OBJECT-TYPE
                    SYNTAX  SEQUENCE OF AtmVcCrossConnectEntry
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The ATM VC Cross Connect table.  A bi-
                      directional VC cross-connect which
                      cross-connects two end points (i.e., VCLs)
                      is modeled as one entry in this table."
                    ::= { atmMIBObjects 11 }


               atmVcCrossConnectEntry OBJECT-TYPE
                    SYNTAX  AtmVcCrossConnectEntry
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "An entry in the ATM VC Cross Connect table.
                      This entry is used to model a bi-directional ATM
                      VC cross-connect cross-connecting two end points.

                      Step-wise Procedures to set up a VC Cross-connect

                      Once the entries in the atmVclTable are created,
                      the following procedures are used
                      to cross-connect the VCLs together to
                      form a VCC segment.

                     (1) The manager obtains a unique
                         atmVcCrossConnectIndex by reading the
                         atmVcCrossConnectIndexNext object.

                     (2) Next, the manager creates a set of one
                         or more rows in the ATM VC Cross Connect
                         Table, one for each cross-connection between
                         two VCLs.  Each row is indexed by the ATM
                         interface port numbers and VPI/VCI values of
                         the two ends of that cross-connection.
                         This set of rows specifies the topology of the
                         VCC cross-connect and is identified by a single
                         value of atmVcCrossConnectIndex.

                      Negotiated VC Cross-Connect Establishment

                    (2a) The manager creates a row in this table by
                         setting atmVcCrossConnectRowStatus to
                         createAndWait(5).  The agent checks the
                         requested topology and the mutual sanity of

Top      Up      ToC       Page 55 
                         the ATM traffic parameters and
                         QoS Classes, i.e., the row creation fails if:
                         - the requested topology is not supported
                           by the agent,
                         - the traffic/QoS parameter values
                           associated with the requested row are
                           incompatible with those of already existing
                           rows for this VC cross-connect.
                         [For example, for setting up
                         a point-to-point VC cross-connect, the
                         ATM traffic parameters in the receive direction
                         of a VCL at the low end of the cross-connect
                         must equal to the traffic parameters in the
                         transmit direction of the other VCL at the
                         high end of the cross-connect,
                         otherwise, the row creation fails.]
                         The agent also checks for internal errors
                         in building the cross-connect.

                         The atmVcCrossConnectIndex values in the
                         corresponding atmVclTable rows are filled
                         in by the agent at this point.

                    (2b) The manager promotes the row in the
                         atmVcCrossConnectTable by setting
                         atmVcCrossConnectRowStatus to active(1).  If
                         this set is successful, the agent has reserved
                         the resources specified by the ATM traffic
                         parameter and QoS Class values
                         for each direction of the VC cross-connect
                         in an ATM switch or network.

                     (3) The manager sets the
                         atmVcCrossConnectAdminStatus to up(1)
                         in all rows of this VC cross-connect to
                         turn the traffic flow on.


                      One-Shot VC Cross-Connect Establishment

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

                      In contrast to the negotiated VC cross-connect
                      establishment which allows for detailed error
                      checking i.e., set errors are explicitly linked to

Top      Up      ToC       Page 56 
                      particular resource acquisition failures), the
                      one-shot VC cross-connect establishment
                      performs the setup on one operation but does
                      not have the advantage of step-wise error
                      checking.

                      VC Cross-Connect Retirement

                      A VC cross-connect identified by a particular
                      value of atmVcCrossConnectIndex is released by:

                     (1) Setting atmVcCrossConnectRowStatus of all rows
                         identified by this value of
                         atmVcCrossConnectIndex to destroy(6).
                         The agent may release all
                         associated resources, and the
                         atmVcCrossConnectIndex values in the
                         corresponding atmVclTable row are removed.
                         Note that a situation when only a subset of
                         the associated rows are deleted corresponds
                         to a VC topology change.

                     (2) After deletion of the appropriate
                         atmVcCrossConnectEntries, the manager may
                         set atmVclRowStatus to destroy(6) the
                         associated VCLs.  The agent releases
                         the resources and removes the associated
                         rows in the atmVclTable.

                      VC Cross-Connect Reconfiguration

                      At the discretion of the agent, a VC
                      cross-connect may be reconfigured by
                      adding and/or deleting leafs to/from
                      the VC topology as per the VC cross-connect
                      establishment/retirement procedures.
                      Reconfiguration of traffic/QoS parameter
                      values requires release of the VC cross-connect
                      before those parameter values may by changed
                      for individual VCLs."
                    INDEX { atmVcCrossConnectIndex,
                          atmVcCrossConnectLowIfIndex,
                          atmVcCrossConnectLowVpi,
                          atmVcCrossConnectLowVci,
                          atmVcCrossConnectHighIfIndex,
                          atmVcCrossConnectHighVpi,
                          atmVcCrossConnectHighVci }
                    ::= { atmVcCrossConnectTable 1 }

Top      Up      ToC       Page 57 
               AtmVcCrossConnectEntry ::= SEQUENCE {
                    atmVcCrossConnectIndex          INTEGER,
                    atmVcCrossConnectLowIfIndex     IfIndex,
                    atmVcCrossConnectLowVpi         INTEGER,
                    atmVcCrossConnectLowVci         INTEGER,
                    atmVcCrossConnectHighIfIndex    IfIndex,
                    atmVcCrossConnectHighVpi        INTEGER,
                    atmVcCrossConnectHighVci        INTEGER,
                    atmVcCrossConnectAdminStatus    INTEGER,
                    atmVcCrossConnectL2HOperStatus  INTEGER,
                    atmVcCrossConnectH2LOperStatus  INTEGER,
                    atmVcCrossConnectL2HLastChange  TimeStamp,
                    atmVcCrossConnectH2LLastChange  TimeStamp,
                    atmVcCrossConnectRowStatus      RowStatus
                            }

               atmVcCrossConnectIndex OBJECT-TYPE
                    SYNTAX  INTEGER (1..2147483647)
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "A unique value to identify this VC cross-connect."
                    ::= { atmVcCrossConnectEntry 1 }

               atmVcCrossConnectLowIfIndex OBJECT-TYPE
                    SYNTAX  IfIndex
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to MIB II's
                      ifIndex value of the ATM interface port for this
                      VC cross-connect.  The term low implies
                      that this ATM interface has the numerically lower
                      ifIndex value than the other ATM interface
                      identified in the same atmVcCrossConnectEntry."
                    ::= { atmVcCrossConnectEntry 2 }

               atmVcCrossConnectLowVpi OBJECT-TYPE
                    SYNTAX  INTEGER  (0..4095)
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to the VPI
                      value at the ATM interface
                      associated with the VC cross-connect that is
                      identified by atmVcCrossConnectLowIfIndex.
                      The VPI value cannot exceed the number
                      supported by the atmInterfaceMaxVpiBits

Top      Up      ToC       Page 58 
                      at the low ATM interface port."
                    ::= { atmVcCrossConnectEntry 3 }

               atmVcCrossConnectLowVci OBJECT-TYPE
                    SYNTAX  INTEGER  (0..65535)
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to the VCI
                      value at the ATM interface
                      associated with this VC cross-connect that is
                      identified by atmVcCrossConnectLowIfIndex.
                      The VCI value cannot exceed the number
                      supported by the atmInterfaceMaxVciBits
                      at the low ATM interface port."
                    ::= { atmVcCrossConnectEntry 4 }

               atmVcCrossConnectHighIfIndex OBJECT-TYPE
                    SYNTAX  IfIndex
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to MIB II's
                      ifIndex value for the ATM interface port for
                      this VC cross-connect.  The term high
                      implies that this VC cross-connect
                      that this ATM interface has the numerically higher
                      ifIndex value than the other ATM interface
                      identified in the same atmVcCrossConnectEntry."
                    ::= { atmVcCrossConnectEntry 5 }

               atmVcCrossConnectHighVpi OBJECT-TYPE
                    SYNTAX  INTEGER   (0..4095)
                    MAX-ACCESS  not-accessible
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to the VPI
                      value at the ATM interface
                      associated with the VC cross-connect that is
                      identified by atmVcCrossConnectHighIfIndex.
                      The VPI value cannot exceed
                      the number supported by the atmInterfaceMaxVpiBits
                      at the high ATM interface port."
                    ::= { atmVcCrossConnectEntry 6 }

               atmVcCrossConnectHighVci OBJECT-TYPE
                    SYNTAX  INTEGER   (0..65535)
                    MAX-ACCESS  not-accessible

Top      Up      ToC       Page 59 
                    STATUS  current
                    DESCRIPTION
                     "The value of this object is equal to the VCI
                      value at the ATM interface
                      associated with the VC cross-connect that is
                      identified by atmVcCrossConnectHighIfIndex.
                      The VCI value cannot exceed
                      the number supported by the atmInterfaceMaxVciBits
                      at the high ATM interface port."
                    ::= { atmVcCrossConnectEntry 7 }

               atmVcCrossConnectAdminStatus OBJECT-TYPE
                    SYNTAX  INTEGER {
                              up(1),
                              down(2)
                              }
                    MAX-ACCESS  read-create
                    STATUS  current
                    DESCRIPTION
                     "The value of this object identifies the desired
                      administrative status of this bi-directional
                      VC cross-connect. The up and down states
                      indicate that the traffic flow is enabled or
                      disabled respectively on this VC cross-connect."
                    DEFVAL { down }
                    ::= { atmVcCrossConnectEntry 8 }

               atmVcCrossConnectL2HOperStatus OBJECT-TYPE
                    SYNTAX  INTEGER {
                              up(1),
                              down(2),
                              unknown(3)
                            }
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "The value of this object identifies the current
                      operational status of the VC cross-connect
                      in one direction; (i.e., from the low to
                      high direction).  The up and down states indicate
                      that this ATM VC cross-connect from low
                      to high direction is operational or not
                      operational respectively.  The unknown state
                      indicates that the state of it cannot be
                      determined."
                    ::= { atmVcCrossConnectEntry 9 }

Top      Up      ToC       Page 60 
               atmVcCrossConnectH2LOperStatus OBJECT-TYPE
                    SYNTAX  INTEGER {
                              up(1),
                              down(2),
                              unknown(3)
                            }
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "The value of this object identifies the current
                      operational status of the VC cross-connect
                      in one direction; (i.e., from the high to
                      low direction).  The up and down states indicate
                      that this ATM VC cross-connect from high
                      to low direction is operational or not
                      operational respectively.  The unknown state
                      indicates that the state of it cannot be
                      determined."
                    ::= { atmVcCrossConnectEntry 10 }

               atmVcCrossConnectL2HLastChange OBJECT-TYPE
                    SYNTAX  TimeStamp
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "The value of MIB II's sysUpTime object
                      at the time this VC cross-connect entered
                      its current operational state in low to high
                      direction.  If the current state was
                      entered prior to the last re-initialization of the
                      agent, then this object contains a zero value."
                    ::= { atmVcCrossConnectEntry 11 }

               atmVcCrossConnectH2LLastChange OBJECT-TYPE
                    SYNTAX  TimeStamp
                    MAX-ACCESS  read-only
                    STATUS  current
                    DESCRIPTION
                     "The value of MIB II's sysUpTime object
                      at the time this VC cross-connect entered
                      its current operational state in high to low
                      direction.  If the current state was
                      entered prior to the last re-initialization of the
                      agent, then this object contains a zero value."
                    ::= { atmVcCrossConnectEntry 12 }

               atmVcCrossConnectRowStatus OBJECT-TYPE
                    SYNTAX  RowStatus

Top      Up      ToC       Page 61 
                    MAX-ACCESS  read-create
                    STATUS  current
                    DESCRIPTION
                     "The status of this entry in the
                      atmVcCrossConnectTable.  This object is used to
                      create a new cross-connect for cross-connecting
                      VCLs which are created using the atmVclTable
                      or to change or delete existing cross-connect.
                      This object must be initially set to
                      `createAndWait' or 'createAndGo'.  This object
                      cannot be set to `active' unless the following
                      columnar object exists in this row:
                      atmVcCrossConnectAdminStatus.
                      To turn on a VC cross-connect,
                      the atmVcCrossConnectAdminStatus
                      is set to `up'."
                    ::= { atmVcCrossConnectEntry 13 }


               -- AAL5 Virtual Channel Connection Performance Statistics
               -- Group

               -- This group contains the AAL5
               -- performance statistics of a VCC at the
               -- interface associated with an AAL5 entity in an ATM
               -- host or ATM switch.


               aal5VccTable    OBJECT-TYPE
                    SYNTAX      SEQUENCE OF Aal5VccEntry
                    MAX-ACCESS   not-accessible
                    STATUS       current
                    DESCRIPTION
                     "This table contains AAL5 VCC performance
                      parameters."
                    ::= { atmMIBObjects 12 }

               aal5VccEntry    OBJECT-TYPE
                    SYNTAX         Aal5VccEntry
                    MAX-ACCESS     not-accessible
                    STATUS         current
                    DESCRIPTION
                     "This list contains the AAL5 VCC
                      performance parameters."
                    INDEX { ifIndex, aal5VccVpi, aal5VccVci }
                    ::= { aal5VccTable 1 }

               Aal5VccEntry    ::= SEQUENCE  {

Top      Up      ToC       Page 62 
                    aal5VccVpi                        INTEGER,
                    aal5VccVci                        INTEGER,
                    aal5VccCrcErrors                  Counter32,
                    aal5VccSarTimeOuts                Counter32,
                    aal5VccOverSizedSDUs              Counter32
                         }


               aal5VccVpi               OBJECT-TYPE
                    SYNTAX       INTEGER  (0..4095)
                    MAX-ACCESS    not-accessible
                    STATUS         current
                    DESCRIPTION
                     "The VPI value of the AAL5 VCC at the
                      interface identified by the ifIndex."
                    ::= { aal5VccEntry 1 }

               aal5VccVci               OBJECT-TYPE
                    SYNTAX       INTEGER  (0..65535)
                    MAX-ACCESS    not-accessible
                    STATUS         current
                    DESCRIPTION
                     "The VCI value of the AAL5 VCC at the
                      interface identified by the ifIndex."
                    ::= { aal5VccEntry 2 }

               aal5VccCrcErrors    OBJECT-TYPE
                    SYNTAX  Counter32
                    MAX-ACCESS  read-only
                    STATUS           current
                    DESCRIPTION
                     "The number of AAL5 CPCS PDUs received with
                      CRC-32 errors on this AAL5 VCC at the
                      interface associated with an AAL5 entity."
                    ::= { aal5VccEntry 3 }

               aal5VccSarTimeOuts    OBJECT-TYPE
                    SYNTAX  Counter32
                    MAX-ACCESS  read-only
                    STATUS           current
                    DESCRIPTION
                     "The number of partially re-assembled AAL5
                      CPCS PDUs which were discarded
                      on this AAL5 VCC at the interface associated
                      with an AAL5 entity because they
                      were not fully re-assembled within the
                      required time period.  If the re-assembly
                      timer is not supported, then this object

Top      Up      ToC       Page 63 
                      contains a zero value."
                    ::= { aal5VccEntry 4 }

               aal5VccOverSizedSDUs    OBJECT-TYPE
                    SYNTAX  Counter32
                    MAX-ACCESS  read-only
                    STATUS           current
                    DESCRIPTION
                     "The number of AAL5 CPCS PDUs discarded
                      on this AAL5 VCC at the interface
                      associated with an AAL5 entity because the
                      AAL5 SDUs were too large."
                    ::= { aal5VccEntry 5 }


               -- Conformance Information

               atmMIBConformance   OBJECT IDENTIFIER ::= { atmMIB 2 }

               atmMIBGroups        OBJECT IDENTIFIER
                                          ::= { atmMIBConformance 1 }
               atmMIBCompliances   OBJECT IDENTIFIER
                                          ::= { atmMIBConformance 2 }


               -- Compliance Statements

               atmMIBCompliance       MODULE-COMPLIANCE
                    STATUS      current
                    DESCRIPTION
                      "The compliance statement for SNMP entities
                       including networks which have ATM and
                       AAL5 interfaces."

                    MODULE -- this module
                      MANDATORY-GROUPS  {atmInterfaceConfGroup,
                                         atmTrafficDescrGroup}

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

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

Top      Up      ToC       Page 64 
                      OBJECT   atmInterfaceMaxActiveVpiBits
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required."

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

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

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

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

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

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

                      OBJECT   atmTrafficDescrParam1
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required."

                      OBJECT   atmTrafficDescrParam2
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required."

                      OBJECT   atmTrafficDescrParam3
                      MIN-ACCESS read-only
                      DESCRIPTION

Top      Up      ToC       Page 65 
                        "Write access is not required."

                      OBJECT   atmTrafficDescrParam4
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required."

                      OBJECT   atmTrafficDescrParam5
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required."

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

                      OBJECT   atmTrafficDescrRowStatus
                      SYNTAX   INTEGER {active(1)}
                                       -- subset of RowStatus
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required, and only one
                         of the six enumerated values for the
                         RowStatus textual convention need be
                         supported, specifically: active(1)."

                      GROUP   atmInterfaceDs3PlcpGroup
                      DESCRIPTION
                        "This group is mandatory only for those
                         ATM interfaces which implement the
                         DS3 PLCP layer."

                      GROUP   atmInterfaceTCGroup
                      DESCRIPTION
                        "This group is mandatory only for those
                         ATM interfaces which implement the
                         TC Sublayer."

                      GROUP   atmVpcTerminationGroup
                      DESCRIPTION
                        "This group is mandatory only for those
                         ATM interfaces which implement ATM
                         VPLs that terminate VPCs (i.e., ones which
                         are NOT cross-connected to other VPLs)."

                      GROUP   atmVpCrossConnectGroup
                      DESCRIPTION

Top      Up      ToC       Page 66 
                        "This group is mandatory only for those
                         ATM interfaces which implement ATM
                         VPLs that are not associated with VCLs
                         and are cross-connected to other VPLs."

                      OBJECT   atmVplVpi
                      SYNTAX   INTEGER (1..255)
                      DESCRIPTION
                        "For ATM UNIs supporting VPCs, the VPI value
                         ranges from 1 to 255."

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

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

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

                      OBJECT   atmVplRowStatus
                      SYNTAX   INTEGER {active(1)}
                                       -- subset of RowStatus
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required, and only one
                         of the six enumerated values for the
                         RowStatus textual convention need be
                         supported, specifically: active(1)."

                      OBJECT   atmVpCrossConnectLowVpi
                      SYNTAX   INTEGER (1..255)
                      DESCRIPTION
                        "For ATM UNIs supporting VPCs, the VPI value
                         at the numerically lower ATM interface port
                         index number ranges from 1 to 255."

                      OBJECT   atmVpCrossConnectHighVpi
                      SYNTAX   INTEGER (1..255)
                      DESCRIPTION
                        "For ATM UNIs supporting VPCs, the VPI value
                         at the numerically higher ATM interface port

Top      Up      ToC       Page 67 
                         index number ranges from 1 to 255."

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

                      OBJECT   atmVpCrossConnectRowStatus
                      SYNTAX   INTEGER {active(1)}
                                       -- subset of RowStatus
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required, and only one
                         of the six enumerated values for the
                         RowStatus textual convention need be
                         supported, specifically: active(1)."

                      GROUP   atmVccTerminationGroup
                      DESCRIPTION
                        "This group is mandatory only for those
                         ATM interfaces which implement ATM
                         VCLs that terminate VCCs (i.e., ones which
                         are NOT cross-connected to other VCLs)."

                      GROUP   atmVcCrossConnectGroup
                      DESCRIPTION
                        "This group is mandatory only for those
                         ATM interfaces which implement ATM
                         VCLs that are cross-connected to
                         other VCLs."

                      OBJECT   atmVclVpi
                      SYNTAX   INTEGER (0..255)
                      DESCRIPTION
                        "For ATM UNIs supporting VCCs, the VPI value
                         ranges from 0 to 255."

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

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

                      OBJECT   atmVclTransmitTrafficDescrIndex

Top      Up      ToC       Page 68 
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required."

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

                      OBJECT   atmVclRowStatus
                      SYNTAX   INTEGER {active(1)}
                                       -- subset of RowStatus
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required, and only one
                         of the six enumerated values for the
                         RowStatus textual convention need be
                         supported, specifically: active(1)."

                      OBJECT   atmVcCrossConnectLowVpi
                      SYNTAX   INTEGER (0..255)
                      DESCRIPTION
                        "For ATM UNIs supporting VCCs, the VPI value
                         at the numerically lower ATM interface port
                         index number ranges from 0 to 255."

                      OBJECT   atmVcCrossConnectHighVpi
                      SYNTAX   INTEGER (0..255)
                      DESCRIPTION
                        "For ATM UNIs supporting VCCs, the VPI value
                         at the numerically higher ATM interface port
                         index number ranges from 0 to 255."

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

                      OBJECT   atmVcCrossConnectRowStatus
                      SYNTAX   INTEGER { active(1)}
                                       -- subset of RowStatus
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required, and only one
                         of the six enumerated values for the
                         RowStatus textual convention need be
                         supported, specifically: active(1)."

Top      Up      ToC       Page 69 
                      GROUP   aal5VccGroup
                      DESCRIPTION
                        "This group is mandatory for the
                         AAL5 virtual connections only."

                      OBJECT   aal5VccVpi
                      SYNTAX   INTEGER (0..255)
                      DESCRIPTION
                        "For ATM UNIs supporting AAL5 VCCs,
                         the VPI value ranges from 0 to 255."

                      OBJECT     atmVccAal5CpcsTransmitSduSize
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required."

                      OBJECT     atmVccAal5CpcsReceiveSduSize
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required."

                      OBJECT     atmVccAal5EncapsType
                      MIN-ACCESS read-only
                      DESCRIPTION
                        "Write access is not required."
                       ::= { atmMIBCompliances 1 }


               -- Units of Conformance

               atmInterfaceConfGroup    OBJECT-GROUP
                      OBJECTS {
                            atmInterfaceMaxVpcs, atmInterfaceMaxVccs,
                            atmInterfaceConfVpcs, atmInterfaceConfVccs,
                            atmInterfaceMaxActiveVpiBits,
                            atmInterfaceMaxActiveVciBits,
                            atmInterfaceIlmiVpi,
                            atmInterfaceIlmiVci,
                            atmInterfaceAddressType,
                            atmInterfaceAdminAddress,
                            atmInterfaceMyNeighborIpAddress,
                            atmInterfaceMyNeighborIfName}
                      STATUS     current
                      DESCRIPTION
                        "A collection of objects providing configuration
                         information about an ATM interface."
                      ::= { atmMIBGroups 1 }

Top      Up      ToC       Page 70 
               atmTrafficDescrGroup    OBJECT-GROUP
                      OBJECTS {
                          atmTrafficDescrType, atmTrafficDescrParam1,
                          atmTrafficDescrParam2, atmTrafficDescrParam3,
                          atmTrafficDescrParam4, atmTrafficDescrParam5,
                          atmTrafficQoSClass, atmTrafficDescrRowStatus}
                      STATUS     current
                      DESCRIPTION
                         "A collection of objects providing information
                          about ATM traffic descriptor type and
                          the associated parameters."
                      ::= { atmMIBGroups 2 }

               atmInterfaceDs3PlcpGroup    OBJECT-GROUP
                      OBJECTS {atmInterfaceDs3PlcpSEFSs,
                          atmInterfaceDs3PlcpAlarmState,
                          atmInterfaceDs3PlcpUASs}
                      STATUS     current
                      DESCRIPTION
                         "A collection of objects providing information
                          about DS3 PLCP layer at an ATM interface."
                      ::= { atmMIBGroups 3 }

               atmInterfaceTCGroup    OBJECT-GROUP
                      OBJECTS { atmInterfaceOCDEvents,
                          atmInterfaceTCAlarmState }
                      STATUS     current
                      DESCRIPTION
                         "A collection of objects providing information
                          about TC sublayer at an ATM interface."
                      ::= { atmMIBGroups 4 }

               atmVpcTerminationGroup    OBJECT-GROUP
                      OBJECTS  {atmVplOperStatus, atmVplAdminStatus,
                          atmVplLastChange,
                          atmVplReceiveTrafficDescrIndex,
                          atmVplTransmitTrafficDescrIndex,
                          atmVplRowStatus }
                      STATUS     current
                      DESCRIPTION
                         "A collection of objects providing
                          information about a VPL at an ATM interface
                          which terminates a VPC
                          (i.e., one which is NOT cross-connected
                          to other VPLs)."
                      ::= { atmMIBGroups 5 }

               atmVccTerminationGroup    OBJECT-GROUP

Top      Up      ToC       Page 71 
                      OBJECTS {atmVclOperStatus, atmVclAdminStatus,
                          atmVclLastChange,
                           atmVclReceiveTrafficDescrIndex,
                           atmVclTransmitTrafficDescrIndex,
                           atmVccAalType, atmVclRowStatus }
                      STATUS     current
                      DESCRIPTION
                         "A collection of objects providing information
                          about a VCL at an ATM interface
                          which terminates a VCC (i.e., one which is
                          NOT cross-connected to other VCLs)."
                      ::= { atmMIBGroups 6 }

               atmVpCrossConnectGroup    OBJECT-GROUP
                      OBJECTS { atmVplReceiveTrafficDescrIndex,
                          atmVplTransmitTrafficDescrIndex,
                          atmVplOperStatus, atmVplRowStatus,
                          atmVpCrossConnectAdminStatus,
                          atmVpCrossConnectL2HOperStatus,
                          atmVpCrossConnectH2LOperStatus,
                          atmVpCrossConnectL2HLastChange,
                          atmVpCrossConnectH2LLastChange,
                          atmVpCrossConnectRowStatus,
                          atmVplCrossConnectIdentifier,
                          atmVpCrossConnectIndexNext }
                      STATUS     current
                      DESCRIPTION
                         "A collection of objects providing
                          information about a VP cross-connect
                          and the associated VPLs that are
                          cross-connected together."
                      ::= { atmMIBGroups 7 }

               atmVcCrossConnectGroup    OBJECT-GROUP
                      OBJECTS { atmVclReceiveTrafficDescrIndex,
                          atmVclTransmitTrafficDescrIndex,
                          atmVclOperStatus, atmVclRowStatus,
                          atmVcCrossConnectAdminStatus,
                          atmVcCrossConnectL2HOperStatus,
                          atmVcCrossConnectH2LOperStatus,
                          atmVcCrossConnectL2HLastChange,
                          atmVcCrossConnectH2LLastChange,
                          atmVcCrossConnectRowStatus,
                          atmVclCrossConnectIdentifier,
                           atmVcCrossConnectIndexNext }
                      STATUS     current
                      DESCRIPTION
                         "A collection of objects providing

Top      Up      ToC       Page 72 
                          information about a VC cross-connect
                          and the associated VCLs that are
                          cross-connected together."
                      ::= { atmMIBGroups 8 }

               aal5VccGroup    OBJECT-GROUP
                      OBJECTS {atmVccAal5CpcsTransmitSduSize,
                          atmVccAal5CpcsReceiveSduSize,
                          atmVccAal5EncapsType,
                          aal5VccCrcErrors, aal5VccSarTimeOuts,
                          aal5VccOverSizedSDUs }
                      STATUS     current
                      DESCRIPTION
                         "A collection of objects providing
                          AAL5 configuration and performance statistics
                          of a VCC."
                      ::= { atmMIBGroups 9 }

               END

11.  Acknowledgments

   This memo is the result of the work of the AToMMIB Working Group.  In
   particular, the contributions of Keith McCloghrie and Ted Brunner
   were critical to the formulation of this specification.

12.  References

   [1] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Structure
       of Management Information for version 2 of the Simple Network
       Management Protocol (SNMPv2)", RFC 1442, SNMP Research,Inc.,
       Hughes LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon
       University, April 1993.

   [2] McCloghrie, K., and M. Rose, Editors, "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.

   [3] Galvin, J., and K. McCloghrie, "Administrative Model for version
       2 of the Simple Network Management Protocol (SNMPv2)", RFC 1445,
       Trusted Information Systems, Hughes LAN Systems, April 1993.

   [4] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol
       Operations for version 2 of the Simple Network Management
       Protocol (SNMPv2)", RFC 1448, SNMP Research, Inc., Hughes LAN
       Systems, Dover Beach Consulting, Inc., Carnegie Mellon
       University, April 1993.

Top      Up      ToC       Page 73 
   [5] McCloghrie, K. and F. Kastenholz, "Evolution of the Interfaces
       Group of MIB-II", RFC 1573, Hughes LAN Systems, FTP Software,
       January 1994.

   [6] Brown, T., and K. Tesink, "Definitions of Managed Objects for
       SMDS Interfaces", RFC 1694, Bellcore, August 1994.

   [7] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Textual
       Conventions for SNMPv2", RFC 1443, SNMP Research,Inc., Hughes LAN
       Systems, Dover Beach Consulting, Inc., Carnegie Mellon
       University, April 1993.

   [8] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
       "Conformance Statements for SNMPv2", RFC 1444, SNMP
       Research,Inc., Hughes LAN Systems, Dover Beach Consulting, Inc.,
       Carnegie Mellon University, April 1993.

   [9] "ATM Forum UNI Specification, Version 3.0", September 1993.

  [10] "ATM Forum B-ICI Specification, Version 1.0", September 1993.

13.  Security Considerations

   Security issues are not discussed in this memo.

14.  Authors' Addresses

   Masuma Ahmed
   Bell Communications Research
   Room 1F-217
   331 Newman Springs Road
   P.O. Box 7020
   Red Bank, NJ  07701-7020

   Phone: (908) 758-2515
   EMail: mxa@mail.bellcore.com


   Kaj Tesink
   Bell Communications Research
   Room 1A-427
   331 Newman Springs Road
   P.O. Box 7020
   Red Bank, NJ  07701-7020

   Phone: (908) 758-5254
   EMail: kaj@cc.bellcore.com