CHAPTER 23
Monitoring the SSB
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Checklist for Monitoring the SSB on page 505
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SSB overview on page 506
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Monitor the SSB status on page 508
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Check for SSB Alarms on page 510
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Verify SSB Failure on page 512
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Obtain SSB Hardware Information on page 513
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Replace the SSB on page 514
Checklist for Monitoring the SSB
Purpose You monitor the M20 router System and Switch Board (SSB) to ensure that it provides
allocation of incoming data packets throughout shared memory on the Flexible PIC
Concentrators (FPCs), transfers outgoing data cells to the FPCs for packet reassembly,
performs route lookups using the forwarding table, monitors system components for
failure and alarm conditions, and monitors FPC operation and reset. (See Table 124 on
page 505)
Action Table 124: Checklist for Monitoring the SSB
Command or ActionMonitor SSB Tasks
“Monitor the SSB status” on page 508
show chassis environment1. Display the SSB Environmental Status on
page 508
show chassis ssb2. Display the SSB Environmental Status on
page 508
Check the LEDs on the SCB faceplate.3. Check the SSB LEDs on page 509
“Check for SSB Alarms” on page 510
show log messages1. Display SSB Error Messages in the System
Log File on page 510
show log chassisd | match ssb2. Display SSB Error Messages in the Chassis
Daemon Log File on page 511
505Copyright © 2012, Juniper Networks, Inc.