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Chapter 26
Monitoring the SFMs
You monitor the Switching and Forwarding Modules (SFMs) to ensure that traffic
transiting the router is handled properly. (See Table 84.)
Table 84: Checklist for Monitoring the SFMs
Monitor SFM Tasks Command or Action
Understanding the SFMs on page 348
Monitoring the SFM Status on page 349
1. Display the SFM Summary Status on page 349 show chassis sfm sfm-slot
show chassis sfm detail sfm-slot
2. Display the SFM LED Status at the Command Line on
page 351
show chassis craft-interface
3. Check the SFM LED Status on the Faceplate on page 351 Check the SFM faceplate at the back of the M40e and M160
router chassis.
4. Display the SFM Environmental Status on page 351
show chassis environment
show chassis environment sfm sfm-slot
Displaying SFM Alarms on page 353
1. Display Current SFM Alarms on page 353
show chassis alarms
2. Display SFM Error Messages in the System Log File on
page 353
show log messages
3. Display SFM Error Messages in the Chassis Daemon Log File
on page 354
show log chassisd
Verifying SFM Failure on page 355
1. Check the SFM Connection on page 355 Check the thumbscrews on the SFM ejector locking tabs.
2. Check the SFM Fuses on page 355 The M40e and M160 router fuses are located in a fuse box at
the rear of the midplane, behind the lower rear impeller
assembly.
3. Perform an SFM Swap Test on page 356 1. Take the SFM offline.
2. Replace the SFM with one that you know works.
3. Bring the SFM online.
4. Check the SFM status.
Getting SFM Hardware Information on page 357
1. Display SFM Hardware Information on page 357
show chassis hardware
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