Maintaining Pics And Pic Cables - Juniper Internet Router M160 Hardware Manual

M160 Internet Router Hardware Guide

Maintaining PICs and PIC Cables

To maintain PICs and PIC cables, follow these guidelines:
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Maintaining Packet Forwarding Engine Components
Check the LEDs on PIC faceplates. Most PIC faceplates have an LED labeled
. Some PICs have additional LEDs, often one per port. The meaning of
STATUS
the LED states differs for various PICs. For more information, see the M160
Internet Router PIC Guide. If the FPC that houses the PIC detects a PIC failure,
the FPC generates an alarm message to be sent to the Routing Engine.
Issue the CLI
show chassis fpc pic-status
numbered from through
0
user@host> show chassis fpc pic-status
Slot 0 Online
PIC 0 4x OC-3 SONET, MM
PIC 1 1x CSTM1, SMIR
PIC 3 2x OC-3 ATM, MM
Slot 1 Online
PIC 0 1x OC-12 SONET, MM
PIC 1 1x OC-12 ATM, MM
PIC 2 2x OC-3 ATM, MM
PIC 3 2x OC-3 ATM, MM
For further description of the output from the command, see the JUNOS
Protocols, Class of Service, and System Basics Command Reference.
Use the cable management system (shown in Figure 21) to support cables and
prevent cables from dislodging or developing stress points.
Place excess cable out of the way in the cable management system. Do
not allow fastened loops of cable to dangle from the connector or cable
management system, because this stresses the cable at the fastening point.
Putting fasteners on the loops helps to maintain their shape.
Keep the cable connections clean and free of dust and other particles, which
can cause drops in the received power level. Always inspect cables and clean
them if necessary before connecting an interface.
Label both ends of PIC cables to identify them.
command. The PIC slots in an FPC are
, top to bottom:
3