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the IBM TR Surrogate MIB or issue one of the following terminal interface
commands:
¹
To enable all flags, use ENABLE TR_SURROGATE REM_STATUS
ALL_FLAGS
¹
To enable individual REM flags, use ENABLE TR_SURROGATE
REM_STATUS, specifying the appropriate keyword for the desired flag
Be aware of the following consequences when enabling any of the REM individual
traps:
¹
Enabling any of the ring-intensive flags may generate excessive soft error
traps. Enable these flags only if you want to know each time a soft error MAC
frame has a value greater than zero for the associated counter. From a given
soft error MAC frame, a separate trap will be generated for every counter that
is greater than zero in that frame.
¹
If any of the auto-intensive flags are enabled, a soft error trap is generated only
when the counter in the soft error frame is greater than zero and the station is
in a pre-weight or weight-exceeded condition.
Under normal conditions, it is useful to enable the following flags:
¹
remGenTrapFlag
¹
remWeightExceeded
¹
rewPreWeightExceeded
¹
remNonIsoThresholdExceeded
When unexpected network problems occur, additional REM flags can be enabled to
help analyze and isolate the problems.
Note: Traps reporting beaconing conditions on the network will be sent as long as
remGenTrapFlag is enabled. Be aware that since the 8239 performs beacon
recovery and may temporarily wrap ports including the Management
Interface to isolate the fault, the 8239 Model 1 REM function may not be
aware of all beacon frames that occur on the ring.
Accessing REM Information
The following tables are part of REM:
¹
Status Table
¹
Isolating Table
¹
Non-Isolating Threshold Exceeded Trap Table
¹
Soft Error Trap Table
¹
Total Soft Error Trap Table
¹
Last Received Soft Error Trap Table
¹
Beacon Data Trap Table
¹
Error MAC Frame Trap Table
The information in the above tables can be accessed via SNMP using the IBM TR
Surrogate MIB or by issuing the following terminal interface commands:
¹
CLEAR TR_SURROGATE_REM_SOFT_ERROR
¹
DISPLAY TR_SURROGATE REM_ERROR_MAC_FRAME
¹
DISPLAY TR_SURROGATE REM_ISOLATING
¹
DISPLAY TR_SURROGATE REM_LAST_BEACON
¹
DISPLAY TR_SURROGATE REM_LAST_SOFT_ERROR
¹
DISPLAY TR_SURROGATE REM_NONISO_THRESHOLD_EXCD
Chapter 8. Network Management
8-15
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