rfc1230.txt
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TXT
1,291 行
dot4StandardRevision
INTEGER
}
dot4IfIndex OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The value of this object identifies the
Transmission Working Group [Page 6]
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),
Transmission Working Group [Page 7]
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 }
Transmission Working Group [Page 8]
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
Transmission Working Group [Page 9]
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,
Transmission Working Group [Page 10]
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 }
Transmission Working Group [Page 11]
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 {
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