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M160 Internet Router Hardware Guide
Troubleshooting FPCs
As soon as an FPC is seated in an operating router, t he Routing Engine downloads
the FPC software to it. The FPC then runs diagnostics and enables the PICs housed
on it. During this time, the green LED labeled
OK above the FPC on the craft interface
blinks. When the FPC is online and functioning normally, the
OK LED lights steadily.
To troubleshoot the FPCs, follow these guidelines:
If the red LED labeled FAIL above the FPC on the craft interface lights steadily,
check the LCD on the craft interface for a message about the status of the FPC
and the PICs housed in it.
Make sure the FPC is properly seated in the midplane—use a Phillips
screwdriver to check that the screws at the top and bottom of the card carrier
are tight.
To check the status of an FPC, issue the following CLI command:
user@host> show chassis fpc
Temp CPU Utilization (%) Memory Utilization (%)
Slot State (C) Total Interrupt DRAM (MB) Heap Buffer
0 Online 37 4 0 32 1 39
1 Online 39 4 0 32 1 39
2 Empty
3 Online 34 1 0 32 1 40
4 Empty
5 Online 35 4 0 32 2 40
6 Online 36 4 0 32 1 39
7 Empty
For more detailed output, add the detail option. The following example also
specifies a slot number (
0), which is optional:
user@host> show chassis fpc detail 0
Slot 0 information:
State Online
Temperature 37 degreesC/98degrees F
Total CPU DRAM 32 MB
Total SRAM 4 MB
Total SDRAM 256 MB
I/O Manager ASIC information Version 2.0, Foundry IBM, Part number 0
I/O Manager ASIC information Version 2.0, Foundry IBM, Part number 0
I/O Manager ASIC information Version 2.0, Foundry IBM, Part number 0
I/O Manager ASIC information Version 2.0, Foundry IBM, Part number 0
Start time: 2003-04-29 16:11:55 PDT
Uptime: 5 days, 21 hours, 32 minutes, 41 seconds
For further description of the output from the commands, see the JUNOS
Internet Software Operational Mode Command Reference: Protocols, Class of
Service, Chassis, and Management.
214 Troubleshooting Packet Forwarding Engine Components