Cabletron Systems 3F00-01, Руководство пользователя

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Chapter 4: Monitoring and Managing the 3F00-01 and 3F55-01
Page 4-16 FDDI Dual-Attached Intelligent Module User’s Guide
4.2.5 3F00-01/3F55-01 Port PHY Status
Physical Layer Protocol (PHY) is the FDDI standard that defines
symbols, line states, clocking requirements, and the encoding of data for
transmission. Versions of system software prior to 2.3 support SMT
version 6.2. In the sections that follow, the SMT version 6.2 MIB
variables are presented first, followed by the SMT version 7.3 versions.
4.2.5.1 SMT Version 6.2
• Identifies the port as a DAS
[
snmpFddiATTACHMENTSMTClass = 2 means DAS
]
• Whether the port has an optical bypass.
[
snmpFddiATTACHMENTOpticalBypassPresent
]
• The value of
I_Max
. [
snmpFddiATTACHMENTIMaxExpiration
] (This is
always -125,000 which corresponds to 10 milliseconds.)
The following status information is available for each of the two PHYs of
the FDDI port:
• Indicates the PHY’s
PC_Type
. [
snmpFddiPORTPCType
]
• Indicates the PC_Type of the PHY’s neighbor.
[
snmpFddiPORTPCNeighbor
]
• Indicates the PHY’s signaling. [
snmpFddiPORTConnectionPolicies
]
• Indicates the PHY’s received signals.
[
snmpFddiPORTRemoteMACIndicated
]
• The value for
T_Next (9)
, i.e., the time for the MAC local loop. This
is always -2,500,000, which corresponds to 200 milliseconds.
[
snmpFddiPORTMACLoopTime
]
• The value for
TB_Max
. This is always -625,000, which corresponds to
50 milliseconds. [
snmpFddiPORTTBMax
]
• The
BS_Flag
of the associated PHY. [
snmpFddiPORTTBSFlag
]
• The
PC_LCT_Fail
of the associated PHY. [
snmpFddiPORTLCTFailCt
]
• The
LER_Estimate
of the associated PHY.
[
snmpFddiPORTLerEstimateCt
]