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Checklist for Monitoring Redundant SSBs
Purpose
You monitor redundant M20 router System and Switch Boards (SSBs) to ensure that they do the following (see Table 1):
- Provide allocation of incoming data packets throughout shared memory on the Flexible PIC Concentrators (FPCs)
- Transfer outgoing data cells to the FPCs for packet reassembly
- Perform route lookups using the forwarding table, and monitor system components for failure and alarm conditions
- Monitor FPC operation and reset
Action
Table 1: Checklist for Monitoring Redundant SSBs
Monitor Redundant SSB Tasks | Command or Action |
|---|---|
| Display Redundant SSB Configuration | configure |
| Displaying Redundant SSB Hardware Information | show chassis hardware |
| Monitor Redundant SSB Status | |
show chassis environment | |
show chassis ssb slot | |
Check the LEDs on the SSB faceplate. | |
| Displaying Redundant SSB Mastership | |
show chassis ssb | |
Check the LEDs on the SSB panel of the craft interface. | |
| Check for SSB Alarms | |
show chassis alarms | |
show log messages | |
show log chassisd | |
| Verify SSB Failure | |
Check the thumbscrews on the left and right sides of the SSB. | |
| |
| Switch SSB Mastership | request chassis ssb master switch <no-confirm> |
| Replace the SSB |
|
