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
Monitoring the SFM Status
Display the SFM Summary Status	show chassis sfm sfm-slot show chassis sfm detail sfm-slot
Display the SFM LED Status at the Command Line	show chassis craft-interface
Check the SFM LED Status on the Faceplate	Check the SFM faceplate at the back of the M40e and M160 router chassis.
Display the SFM Environmental Status	show chassis environment show chassis environment sfm sfm-slot
Displaying SFM Alarms
Display Current SFM Alarms	show chassis alarms
Display SFM Error Messages in the System Log File	show log messages
Display SFM Error Messages in the Chassis Daemon Log File	show log chassisd
Verifying SFM Failure
Check the SFM Connection	Check the thumbscrews on the SFM ejector locking tabs.
Check the SFM Fuses	The M40e and M160 router fuses are located in a fuse box at the rear of the midplane, behind the lower rear impeller assembly.
Perform an SFM Swap Test	Take the SFM offline. Replace the SFM with one that you know works. Bring the SFM online. Check the SFM status.
Getting SFM Hardware Information
Display SFM Hardware Information	show chassis hardware
Locate the SFM Serial Number ID Label	Look on the top left of the SFM component.
Replacing the SFM	See Return the Failed Component, or follow the procedure in the appropriate router hardware guide.