Juniper Networks M5 - Manual (Page 145)

Troubleshoot the Power System
Troubleshoot the FEB
If the FEB fails, the forwarding and routing functions of the router halt immediately and do
not resume until the FEB failure has been corrected.
To troubleshoot an FEB, follow these guidelines:
•
Make sure the FEB is properly seated in the midplane. Use a Phillips screwdriver to
ensure that the screws at the top of the FEB are securely tightened.
•
Check the alarm LEDs on the craft interface. An FEB failure generates either a red or
yellow alarm, depending on the type of failure.
Troubleshoot PICs
To troubleshoot the PICs, follow these guidelines:
•
To check the status of each port on a PIC, look at the LED located on the PIC faceplate.
For information about the meaning of LED states on different PICs, see the M5 and
M10 Internet Routers PIC Guide.
•
To check the status of a PIC, issue the following CLI command. The PIC slots in the FPC
are numbered from 0 through 3, right to left:
user@host> show chassis fpc pic-status
Slot 0 Online
PIC 0 4x OC-3 SONET, MM
PIC 1 1x CSTM1, SMIR
PIC 3 2x OC-3 ATM, MM
Slot 1 Online
PIC 0 1x OC-12 SONET, MM
PIC 1 1x OC-12 ATM, MM
PIC 2 2x OC-3 ATM, MM
PIC 3 2x OC-3 ATM, MM
For further description of the output from the command, see the JUNOS Internet
Software Operational Mode Command Reference: Protocols, Class of Service, Chassis,
and Management.
Troubleshoot the Power System
When a power supply is functioning correctly, the blue LED labeled OUTPUT OK is lit steadily.
If any other LED states apply, consult the following sections:
•
LED on Both Supplies Is Off on page 126
•
LED on One Supply Is Off on page 126
Troubleshoot Hardware Components 125