Maintaining SFMs

The router can have a Switching and Forwarding Module (SFM) in each of the slots labeled SFM 0 through SFM 3 at the rear of the chassis, as shown in Figure 3. To maintain the SFMs, perform the following procedures regularly:

• Check the LEDs on the SFM faceplates. The green LED labeled OK lights steadily when an SFM is functioning normally. For more information, see SFM Components.
• Issue the CLI show chassis sfm command to check the status of the SFMs. The following sample output is for a router with four SFMs installed:
  user@host> show chassis sfm

                  Temp  CPU Utilization (%)   Memory    Utilization (%)
  Slot State       (C)  Total  Interrupt      DRAM (MB) Heap     Buffer
    0  Online       41      3          0        64        19         46
    1  Online       42      5          0        64        19         46
    2  Online       43      4          0        64        19         46
    3  Online       41      3          0        64        19         46
   

  For more detailed output, add the detail option. The following example also specifies a slot number (1), which is optional:

  
  user@host> show chassis sfm detail 1

  Slot 1 information:
    State                     Online    
    SPP Temperature        43 degrees C / 109 degrees F
    SPR Temperature        43 degrees C / 109 degrees F
    Total CPU DRAM         64 MB
    Total SSRAM             8 MB
    Internet Processor II     Version 1, Foundry IBM, Part number 9
    Start time:               2003-04-29 16:12:26 PDT
    Uptime:                   5 days, 22 hours, 28 minutes, 26 seconds
  
  Packet scheduling mode : Disabled
   

  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.