Step 1: Display the SFM Summary Status

Action

To display the SFM summary status, use the following JUNOS software command-line interface (CLI) command:

user@host> show chassis sfm

Sample Output

user@host> show chassis sfm

Temp  CPU Utilization (%)   Memory    Utilization (%)

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

  0  Online            41      2          0        64        16         46

  1  Offline             --- Hard FPC error ---

  2  Online            43      2          0        64        16         46

  3  Online            44      2          0       128         7         46

What it Means

The command output displays the SFM slot number: 0, 1, 2, or 3. The output also displays the operating status of each SFM as Online, Offline, or Empty.

In the sample output, the root cause of the SFM1 failure may be an FPC problem.

The command output displays the temperature of air passing by the SFM, in degrees Centigrade. It displays the SFM CPU usage, including the total percentage used by the SFM processor and the percentage used for interrupts.

The command output also displays the percentage of memory usage, including the total DRAM available to the SFM processor, in megabytes (MB), and the percentage of heap space (dynamic memory) being used by the SFM processor. Heap utilization greater than 80 percent can indicate a software problem (memory leak). The output shows the percentage of buffer space being used by the SFM processor for buffering internal messages.

Alternative Action

If the SFM summary command output indicates that there is a problem, you can display more detailed SFM status information with the following CLI command:

user@host> show chassis sfm detail 

The command output displays the following information:

Sample Output

user@host> show chassis sfm detail 

SFM status:

Slot 0 information:

  State                          Online    

  SPP Temperature             36 degrees C / 96 degrees F

  SPR Temperature             45 degrees C / 113 degrees F

  Total CPU DRAM              64 Mbytes

  Total SRAM                   4 Mbytes

  Internet Processor I           Version 1, Foundry IBM, Part number 3

  Start time:                    2001-12-03 05:08:45 PST

  Uptime:                        6 hours, 41 minutes, 17 seconds

Slot 1 information:

  [...Output truncated...]

Slot 2 information:

  [...Output truncated...]

Slot 3 information:

  [...Output truncated...]

Packet scheduling mode: Disabled

What It Means

In addition to the command output displayed for the show chassis sfm command, the show chassis sfm detail command displays the temperature of air passing by the Switch Plane Processor (SPP) card and the Switch Plane Router (SPR) card (the two SFM serial components) in degrees Centigrade. The command output displays the total CPU DRAM and SRAM being used by the SFM processor. It also displays the time when the SFM became active and how long the SFM has been up and running. A small uptime means that the SFM came online a short time ago and could indicate a possible SFM error condition.

Alternative Action

To display the status of a particular SFM, use the following CLI command:

user@host> show chassis sfm sfm-slot

Alternative Action

To display detailed status information about a particular SFM, use the following CLI command:

user@host> show chassis sfm detail sfm-slot