Juniper CBL-M40-PWR-EU Manuel D’Utilisation
Maintain and Replace Packet Forwarding Engine Components
Maintain the SCB
169
Figure 78: Install a PIC
Maintain the SCB
The System Control Board (SCB) occupies the center slot of the card cage, installing into the
backplane from the front of the chassis (see Figure 1). To maintain the SCB, follow these
guidelines:
backplane from the front of the chassis (see Figure 1). To maintain the SCB, follow these
guidelines:
Check the LEDs on the SCB faceplate. The green LEDs labeled
ACTIVE
and
RUN
blink
periodically when it is functioning normally. For more information, see “SCB
Components” on page 13.
Components” on page 13.
Issue the CLI
show chassis scb
command to check the status of the SCB. As shown in the
sample output, the
Uptime
field reports how long the SCB has been functioning:
user@host> show chassis scb
SCB status:
Temperature 26 degrees C / 78 degrees F
CPU utilization 2 percent
Interrupt utilization 0 percent
Heap utilization 16 percent
Buffer utilization 44 percent
Total CPU DRAM 64 MB
Internet Processor II Version 1, Foundry IBM, Part number 9
Start time: 2003-05-22 11:43:46 PDT
Uptime: 4 days, 4 hours, 11 minutes, 15 seconds
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.
Operational Mode Command Reference: Protocols, Class of Service, Chassis, and Management.
Replace the SCB
The SCB is hot-pluggable, as described in “Field-Replaceable Units (FRUs)” on page 4. When
the SCB fails or is removed from the chassis, forwarding halts until it is replaced and
functioning again.
the SCB fails or is removed from the chassis, forwarding halts until it is replaced and
functioning again.
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