Cisco Systems Cisco MGX 8850 Manuale Utente
9-138
Cisco MGX 8850 Routing Switch Command Reference
Release 2.0, Part Number 78-10467-04 Rev C0, October 2001
Chapter 9
Troubleshooting Commands
dspxbarerrthresh
dspxbarerrthresh
Display Crossbar Error Threshold—display the thresholds for alarms of different severities.
A crossbar can have nine types of errors, and each error has a threshold. The errors are loss of
synchronization, a variety of parity and CRC errors, and so on (see Definitions of Crossbar Errors).
synchronization, a variety of parity and CRC errors, and so on (see Definitions of Crossbar Errors).
The items that make up a threshold are the:
•
Duration of the errored state
•
Number of errors during that time period
•
Upper and lower error counts within a particular alarm severity (minor, major, and critical)
Note
The default settings for crossbar error thresholds are optimal for nearly all applications. The
dspxbarerrthresh command shows the existing thresholds. If necessary, you can change thresholds
through the cnfxbarerrthresh command.
dspxbarerrthresh command shows the existing thresholds. If necessary, you can change thresholds
through the cnfxbarerrthresh command.
The two types of alarm counts for each of these severities. (Refer to the example.) The higher count is
the Alarm Count and is the highest number of errors that triggers an alarm of a particular severity. The
lower count is the Release Count: when the number of errors drops below the Release Count, the alarm
severity drops to the next lower severity. For example (using the defaults shown in the example display),
if the number of transceiver errors drops below 40 (a major alarm), the alarm turns into a minor alarm.
The higher count for a minor, major, and critical alarm is the number of errors that trigger that alarm.
The lower count is number of errors that causes the severity to drop to the next lower severity.
the Alarm Count and is the highest number of errors that triggers an alarm of a particular severity. The
lower count is the Release Count: when the number of errors drops below the Release Count, the alarm
severity drops to the next lower severity. For example (using the defaults shown in the example display),
if the number of transceiver errors drops below 40 (a major alarm), the alarm turns into a minor alarm.
The higher count for a minor, major, and critical alarm is the number of errors that trigger that alarm.
The lower count is number of errors that causes the severity to drop to the next lower severity.
The types of errors whose thresholds are displayed are:
1.
Loss of synchronization (LossOfSync)
2.
Transceiver error (TranscieverErr)
3.
DisparityErr—an accumulation of five ASIC-level errors
4.
ParityErr—a parity error in the switch frame as a whole
5.
HeaderCRCErr—a CRC error for the switch frame header
6.
PayloadCRCErr—a CRC error for the switch frame payload
7.
RemapTwiceErr
8.
RemapRecurrErr
9.
Backpressure parity error (B.P.ParityErr)—a parity error in the signaling for backpressure
Cards on Which This Command Runs
PXM45
Syntax
dspxbarerrthresh
Syntax Description
This command takes no parameters.