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Maintain Packet F
orwarding Engine Components
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.
Maintain Pack
et Forwarding Engine Components
For instructions on maintaining Packet Forwarding Engine components, see the following
sections:
• Maintain the FEB on page 76
• Maintain PICs and PIC Cables on page 76
Maintain the FEB
The Forwarding Engine Board (FEB) installs into the rear of the chassis, as shown in Figure 3.
To maintain the FEB, perform the following procedures on a regular basis:
• Check the system logging messages on the management console. The FEB notifies the
Routing Engine of any errors it detects during normal operation.
• Issue the CLI show chassis feb command to check the status of the FEB.
user@host> s
how chassis feb
FEB status:
Temperature 32 degreesC/89degrees F
CPU utilizati
on 3 percent
Interrupt utilization 0 percent
Heap utilization 18 percent
Buffer utiliz
ation 44 percent
Total CPU DRAM 64 MB
Internet Processor II Version 1, Foundry IBM, Part number 9
Start time: 20
03-05-01 15:08:59 PDT
Uptime: 3 days, 9 hours, 3 minutes, 13 seconds
For a description of the output from the co mmand, see the JUN OS Internet Software
Operational Mode Command Reference: Protocols, Class of Service, Chassis, and
Management.
Maintain PICs
and PIC Cables
To maintain PICs and PIC cables, follow these guidelines:
• Check the LEDs on PIC faceplates. Most PIC faceplates have an LED labeled STATUS.
Some PICs have additional LEDs, often one per port. The meaning of the LED states
differs for va
rious PICs. For more information, see the M5 and M10 Internet Routers PIC
Guide. I f the FPC that houses the PIC detects a PIC failure, the FPC generates an alarm
message to be sent to the Routing Engine.
76 M5 and M10 Internet Routers Hardware Guide