Step 1: Check FPC Status and Utilization

Action

To display brief status and utilization information for all FPCs installed in the router, use the following JUNOS command-line interface (CLI) operational mode command:

user@host> show chassis fpc

Sample Output

user@m160> show chassis fpc

Temp  CPU Utilization (%)   Memory    Utilization (%)

Slot State            (C)  Total  Interrupt      DRAM (MB) Heap     Buffer

  0  Online            43      3          0        32         1         39

  1  Online            47      3          0        32         1         39

  2  Online            42      3          0        32         1         40

  3  Online            40      4          0        32         1         39

  4  Online            41      4          0        32         1         39

  5  Online            42      0          0        32         1         39

  6  Empty              0      0          0         0         0          0

  7  Empty              0      0          0         0         0          0

What It Means

Use the show chassis fpc command to identify whether there is a problem with any of the FPCs installed in the router. The command output displays a brief status of all the FPCs installed in the router. The state can be online, dead, diag, dormant, empty, online, probed, or probe-wait. If the FPC state is dead, an alarm occurs. For more detailed information about the FPC states, see the JUNOS Protocols, Class of Service, and System Basics Command Reference.

The temperature is that of the air flowing past the FPC. If the temperature is too high, an alarm occurs.

The CPU and memory information is the total percentage of CPU being used by the FPC processor, the total CPU being used by the FPC processor, the percentage of CPU being used for interrupts, and the total DRAM available to the FPC processor. The percentage of heap space (dynamic memory) reflects the buffer space being used by the FPC processor. If the heap space exceeds 80 percent, there might be a software problem (memory leak).

The output also displays the percentage of buffer space being used by the FPC processor for buffering internal messages.