rfc1230.txt

<VC++网络游戏建摸与实现>源代码

                             dot4StandardRevision
                                 INTEGER
                         }


          dot4IfIndex  OBJECT-TYPE
                     SYNTAX  INTEGER
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The value of this object identifies the



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RFC 1230                     IEEE 802.4 MIB                     May 1991


                             802.4 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 [4,6], for the
                             same interface."
                     ::= { dot4Entry 1 }

          dot4Options OBJECT-TYPE
                     SYNTAX  INTEGER
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The optional parts of the 802.4
                             specification which are in use by this
                             station.  The options of the 802.4
                             specification are represented by the
                             following values:
                                   1 - Priority
                                   2 - Request-With-Response
                             The value of this object is given by the
                             sum of the above representations for
                             those options in use on this interface.
                             The value zero indicates that no options
                             are in use."
                     ::= { dot4Entry 2 }

          dot4State OBJECT-TYPE
                     SYNTAX  INTEGER {
                                 other(1),
                                 offline(2),
                                 outOfRing(3),
                                 enteringRing(4),
                                 inRing(5)
                             }
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The current state of the 802.4
                             interface.  The value of other(1) is
                             used if the state is unknown
                             (e.g., due to an error condition)."
                     ::=   { dot4Entry 3 }

          dot4Commands OBJECT-TYPE
                     SYNTAX  INTEGER {
                                 no-op(1),
                                 enterRing(2),



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RFC 1230                     IEEE 802.4 MIB                     May 1991


                                 exitRing(3),
                                 reset(4),
                                 initialize(5)
                             }
                     ACCESS  read-write
                     STATUS  mandatory
                     DESCRIPTION
                             "Setting this object causes the station
                             to change the state of the interface as
                             indicated by the specified value.  An
                             initialize(5) command causes the
                             interfaceto load its operational
                             parameters from its initialization
                             parameters; the value of
                             dot4InitInRingDesired determines
                             whether the station tries to enter the
                             logical ring immediately.
                                 Note that the 802.4 specification
                             suggests a station remain Offline after a
                             'remote Network Management' reset(4),
                             until a 'local Network Management'
                             initialize(5) is performed.
                                 Setting this object to a value of
                             no-op(1) has no effect.  When read,
                             this object always has the value no-op(1)."
                     ::=  { dot4Entry 4 }

          dot4MacAddrLen OBJECT-TYPE
                     SYNTAX  INTEGER {
                                 sixteenBit(1),
                                 forty-eightBit(2)
                             }
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "This object indicates the size of MAC
                             addresses interpreted by this station."
                     ::= { dot4Entry 5 }

          dot4NextStation OBJECT-TYPE
                     SYNTAX  MacAddress
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The MAC address of this station's
                             successor in the logical ring."
                     ::= { dot4Entry 6 }




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RFC 1230                     IEEE 802.4 MIB                     May 1991


          dot4PreviousStation OBJECT-TYPE
                     SYNTAX  MacAddress
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The source MAC address of the last token
                             addressed to this station."
                     ::= { dot4Entry 7 }

          dot4SlotTime OBJECT-TYPE
                     SYNTAX  OctetTime
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The maximum time any station need wait
                             for an immediate MAC-level response from
                             another station.
                             This value must the same in all stations on
                             the 802.4 network."
                     ::= { dot4Entry 8 }

          dot4LastTokenRotTime OBJECT-TYPE
                     SYNTAX  OctetTime
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The observed token rotation time for the
                             last token rotation, timed from token
                             arrival to token arrival.  A value of
                             zero indicates that the token is not
                             rotating."
                     ::= { dot4Entry 9 }

          dot4HiPriTokenHoldTime OBJECT-TYPE
                     SYNTAX  OctetTime
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The maximum duration for which a station
                             can hold the token to transmit frames of
                             access class 6 (if the priority option is
                             implemented), or of any access class (if
                             the priority option is not implemented)."
                     ::= { dot4Entry 10 }

          dot4TargetRotTimeClass4 OBJECT-TYPE
                     SYNTAX  OctetTime
                     ACCESS  read-only



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RFC 1230                     IEEE 802.4 MIB                     May 1991


                     STATUS  mandatory
                     DESCRIPTION
                             "If the priority scheme is being used,
                             this value specifies a limit on how long
                             a station can transmit frames at access
                             class 4.  The limit is measured from the
                             time the station is able to start
                             transmitting frames at this access class
                             on one rotation, to the time it must stop
                             transmitting frames at this access class
                             on the next rotation.  If the priority
                             scheme is not being used, this object has
                             the value 0."
                     ::= { dot4Entry 11 }

          dot4TargetRotTimeClass2 OBJECT-TYPE
                     SYNTAX  OctetTime
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "If the priority scheme is being used,
                             this value specifies a limit on how long
                             a station can transmit frames at access
                             class 2.  The limit is measured from the
                             time the station is able to start
                             transmitting frames at this access
                             class on one rotation, to the time it
                             must stop transmitting frames at this
                             access class on the next rotation.  If
                             the priority scheme is not being used,
                             this object has the value 0."
                     ::= { dot4Entry 12 }

          dot4TargetRotTimeClass0 OBJECT-TYPE
                     SYNTAX  OctetTime
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "If the priority scheme is being used,
                             this value specifies a limit on how long
                             a station can transmit frames at access
                             class 0.  The limit is measured from the
                             time the station is able to start
                             transmitting frames at this access
                             class on one rotation, to the time it
                             must stop transmitting frames at this
                             access class on the next rotation.  If
                             the priority scheme is not being used,



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RFC 1230                     IEEE 802.4 MIB                     May 1991


                             this object has the value 0."
                     ::= { dot4Entry 13 }

          dot4TargetRotTimeRingMaint OBJECT-TYPE
                     SYNTAX  OctetTime
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "A value used to limit the duration of a
                             token rotation.  If the duration of a
                             token rotation exceeds this value, the
                             station will not open the response window
                             to solicit for a new successor."
                     ::= { dot4Entry 14 }

          dot4RingMaintTimerInitValue OBJECT-TYPE
                     SYNTAX  OctetTime
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The value to which the
                             dot4TargetRotTimeRingMaint is set, each
                             time the station enters the ring.
                             A large value will cause the station to
                             solicit successors immediately upon entry
                             to the ring; a value of zero will cause
                             the station to defer this solicitation
                             for at least one token rotation."
                     ::= { dot4Entry 15 }

          dot4MaxInterSolicitCount OBJECT-TYPE
                     SYNTAX  INTEGER (16..255)
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The maximum number of consecutive token
                             rotations without soliciting for a
                             successor.  If this count expires, the
                             station opens the response window to
                             solicit for a successor (providing the
                             duration of the current token rotation
                             has not exceeded
                             dot4TargetRotTimeRingMaint).  The least
                             significant two bits of the count are
                             determined randomly by the station on a
                             per-use basis."
                     ::= { dot4Entry 16 }




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RFC 1230                     IEEE 802.4 MIB                     May 1991


          dot4MaxRetries OBJECT-TYPE
                     SYNTAX  INTEGER (0..7)
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The maximum number of retries of a
                             Request-with-Response (RWR) frame.  If
                             the RWR option is not in use, this object
                             has the value 0."
                     ::= { dot4Entry 17 }

          dot4MinPostSilencePreambLen OBJECT-TYPE
                     SYNTAX  INTEGER
                     ACCESS  read-only
                     STATUS  mandatory
                     DESCRIPTION
                             "The minimum number of octets of preamble
                             on the first frame transmitted by this
                             station after a period of 'transmitted'
                             silence."
                     ::= { dot4Entry 18 }

          dot4StandardRevision OBJECT-TYPE
                     SYNTAX  INTEGER {