rfc1604.txt

<VC++网络游戏建摸与实现>源代码

      N391 - Full status (status of all PVCs) polling counter

      N392 - Error threshold

      N393 - Monitored events count

      T391 - Link integrity verification polling timer

      T392 - Polling verification timer

      nT3 - Status enquiry timer

      nN3 - Maximum status enquiry counter

3.3.  Apply MIB II to a Frame Relay Service

      Use the System Group to apply to the SNMP proxy-agent, since the
      proxy-agent may be monitoring many Frame Relay devices in one
      network.  System Group applies to only one system.  This group is
      not instantiated.




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RFC 1604                Frame Relay Service MIB               March 1994


          sysDescr:  ASCII string describing the SNMP proxy-agent.
                     Can be up to 255 characters long. This field is
                     generally used to indicate the network providers
                     identification and type of service offered.

          sysObjectID:  Unique OBJECT IDENTIFIER (OID) for the SNMP
                        proxy-agent.

          sysUpTime:  Clock in the SNMP proxy-agent; TimeTicks
                      in 1/100s of a second.  Elapsed type since
                      the proxy-agent came on line.

          sysContact:  Contact for the SNMP proxy-agent.
                       ASCII string of up to 255 characters.

          sysName:  Domain name of the SNMP proxy-agent, for example,
                    acme.com

          sysLocation:  Location of the SNMP proxy-agent.
                        ASCII string of up to 255 characters.

          sysServices:  Services of the managed device.  The value "2",
                        which implies that
                        the Frame Relay network is providing
                        a subnetwork level service, is recommended.

   This specifies how the Interfaces Group defined in MIB II shall be
   used for the management of Frame Relay based interfaces, and in
   conjunction with the Frame Relay Service MIB module. This memo
   assumes the interpretation of the evolution of the Interfaces group
   to be in accordance with: "The interfaces table (ifTable) contains
   information on the managed resource's interfaces.  Each sub-layer
   below the internetwork layer of a network interface is considered an
   interface." Thus, the ifTable allows the following Frame Relay-based
   interfaces to be represented as table entries:

          - Frame Relay interfaces in the Frame Relay equipment (e.g.,
            switches, routers or networks) with Frame Relay interfaces.
            This level is concerned with generic frame counts and
            not with individual virtual connections.

   In accordance with the guidelines of ifTable, frame counts per
   virtual connection are not covered by ifTable, and are considered
   interface specific and covered in the Frame Relay Service MIB module.
   In order to interrelate the ifEntries properly, the Interfaces Stack
   Group shall be supported.

   Some specific interpretations of ifTable for Frame Relay follow.



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RFC 1604                Frame Relay Service MIB               March 1994


           Object   Use for the generic Frame Relay layer
           ======   =========================================
           ifIndex          Each Frame Relay port is represented
                            by an ifEntry.

           ifDescr          Description of the Frame Relay interface.
                            ASCII string describing the UNI/NNI
                            logical port.  Can be up to
                            255 characters long.

           ifType           The value allocated for Frame Relay
                            Service is equal to 44.

           ifMtu            Set to maximum frame size in octets for
                            this frame relay logical port.

           ifSpeed          Peak bandwidth in bits per second
                            available for use.  This could be the
                            speed of the logical port and not
                            the access rate. Actual user information
                            transfer rate (i.e., access rate) of the
                            UNI or NNI logical port in bits per second
                            (this is not the clocking speed).  For
                            example, it is 1,536,000 bits per
                            second for a DS1-based UNI/NNI logical
                            port and 1,984,000 bits per second for an
                            E1-based UNI/NNI logical port.

           ifPhysAddress    The primary address for this logical port
                            assigned by the Frame Relay interface
                            provider.  An octet string of zero length
                            if no address is used for this logical
                            port.

           ifAdminStatus     The desired administrative status of the
                             frame relay logical port.

           ifOperStatus      The current operational status of the
                             Frame Relay UNI or NNI logical port.

           ifLastChange      The elapsed time since the last
                             re-initialization of the logical port.
                             The value of sysUpTime at the time the
                             logical port entered its current
                             operational state.  If the current
                             state was entered prior to the last
                             re-initialization of the local
                             network management subsystem, then



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RFC 1604                Frame Relay Service MIB               March 1994


                             this object contains a zero value.

           ifInOctets        The number of received octets.
                             This counter only counts octets from the
                             beginning of the frame relay header field
                             to the end of user data.

           ifInUcastPkts     The number of received unerrored,
                             unicast frames.

           ifInDiscards      The number of received frames discarded.
                             Possible reasons are as follows:
                             policing, congestion.

           ifInErrors        The number of received frames that are
                             discarded, because of an error.
                             Possible errors can be the following: the
                             frame relay frames were too long or were
                             too short, the frames had an invalid or
                             unrecognized DLCI values, or incorrect
                             header values.

           ifInUnknownProtos  The number of packets discarded because
                              of an unknown or unsupported protocol.
                              For Frame Relay Service interfaces, this
                              counter will always be zero.

           ifOutOctets       The number of transmitted octets.
                             This counter only counts octets from the
                             beginning of the frame relay header field
                             to the end of user data.

           ifOutUcastpkts    The number of frames sent.

           ifOutDiscards     The number of frames discarded in the
                             egress direction. Possible
                             reasons are as follows:  policing,
                             congestion.

           ifOutErrors       The number of frames discarded in the
                             egress direction, because of errors.
                             Possible reason is transmit underruns.

           ifName            This variable is not applicable for
                             Frame Relay Service interfaces,
                             therefore, this variable contains a
                             zero-length string.




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RFC 1604                Frame Relay Service MIB               March 1994


           ifInMulticastPkts  The number of received unerrored,
                              multicast frames.

           ifInBroadcastPkts  This variable is not applicable for
                              Frame Relay Service interfaces,
                              therefore, this counter is always zero.

           ifOutMulticastPkts  The number of sent unerrored,
                               multicast frames.

           ifOutBroadcastPkts  This variable is not applicable for
                               Frame Relay Service interfaces,
                               therefore, this counter is always zero.

           ifHCInOctets      Only used for DS3-based (and greater)
                             Frame Relay logical ports.
                             The number of received octets.
                             This counter only counts octets from the
                             beginning of the frame relay header field
                             to the end of user data.

           ifHCOutOctets     Only used for DS3-based (and greater)
                             Frame Relay logical ports.
                             The number of transmitted octets.
                             This counter only counts octets from the
                             beginning of the frame relay header field
                             to the end of user data.

           ifLinkUpDownTrapEnble  The value of this object is
                                  implementation specific for Frame
                                  Relay logical ports.

           ifHighSpeed         Set to the user data rate of the frame
                               relay logical port in millions of
                               bits per second.  If the user data rate
                               is less than 1 Mbps, then this value is
                               zero.

           ifPromiscuousMode   Set to false(2).

           ifConnectorPresent  Set to false(2).

   Frame Relay Network Service interfaces support the Interface Stack
   Group.  Frame Relay Network Service interfaces do not support any
   other groups or objects in the Interfaces group of MIB II.  Also,
   supporting the SNMP Group of MIB II is an implementation choice.





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RFC 1604                Frame Relay Service MIB               March 1994


4.  Object Definitions

 FRNETSERV-MIB DEFINITIONS ::= BEGIN

 IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
    Counter32, Integer32,
    TimeTicks                                FROM SNMPv2-SMI
    DisplayString, PhysAddress,
    TimeStamp, RowStatus                     FROM SNMPv2-TC
    MODULE-COMPLIANCE, OBJECT-GROUP          FROM SNMPv2-CONF
    ifIndex, transmission                    FROM RFC-1213;

 frnetservMIB MODULE-IDENTITY
      LAST-UPDATED "9311161200Z"
      ORGANIZATION "IETF Frame Relay Network MIB Working Group"
      CONTACT-INFO
            "   Tracy A. Brown
                Bellcore
                331 Newman Springs Rd.
                Red Bank, NJ 07701 USA

                Tel: [phone]
                Fax: [phone]
                E-mail: [e-mail]."
      DESCRIPTION
               "The MIB module to describe generic objects for
               Frame Relay Network Service."
      ::= { transmission 44 }

      IfIndex ::= TEXTUAL-CONVENTION
            STATUS  current
            DESCRIPTION
               "The value of this object identifies the
               interface for which this entry contains
               management information.  The value of this
               object for a particular interface has the same
               value as the ifIndex object, defined in RFC
               1213, for the same interface."
            SYNTAX Integer32

      frnetservObjects  OBJECT IDENTIFIER ::= { frnetservMIB 1 }
      frnetservTraps    OBJECT IDENTIFIER ::= { frnetservMIB 2 }


 -- The Frame Relay Service Logical Port Group

 --  the Frame Relay Logical Port Group



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RFC 1604                Frame Relay Service MIB               March 1994


 --  This table is an interface specific addendum
 --  to the generic ifTable from MIB-II.

frLportTable OBJECT-TYPE
 SYNTAX  SEQUENCE OF FrLportEntry
 MAX-ACCESS  not-accessible
 STATUS  current
 DESCRIPTION
         "The Frame Relay Logical Port Information table."
 ::= { frnetservObjects 1 }

frLportEntry OBJECT-TYPE
 SYNTAX  FrLportEntry
 MAX-ACCESS  not-accessible
 STATUS  current
 DESCRIPTION
          "An entry in the Frame Relay Logical Port
          Information table."
 INDEX   { ifIndex }
 ::= { frLportTable 1 }

FrLportEntry ::=
  SEQUENCE {
      frLportNumPlan
          INTEGER,
      frLportContact
          DisplayString,
      frLportLocation
          DisplayString,
      frLportType
          INTEGER,
      frLportAddrDLCILen
          INTEGER,
      frLportVCSigProtocol
          INTEGER,
      frLportVCSigPointer
          OBJECT IDENTIFIER
 }


 frLportNumPlan OBJECT-TYPE
     SYNTAX  INTEGER {
               other(1),
               e164(2),
               x121(3),
               none(4)
             }
     MAX-ACCESS  read-only



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RFC 1604                Frame Relay Service MIB               March 1994


     STATUS  current
     DESCRIPTION
             "The value of this object identifies the network
             address numbering plan for this UNI/NNI logical