M160 Internet Router Hardware Guide
Maintaining 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 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
command. The PIC slots in an FPC are
numbered from
0
through
3
, top to bottom:
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.
134
Maintaining Packet Forwarding Engine Components
Содержание Internet Router M160
Страница 12: ...M160 Internet Router Hardware Guide xii Table of Contents ...
Страница 16: ...M160 Internet Router Hardware Guide xvi List of Figures ...
Страница 18: ...M160 Internet Router Hardware Guide xviii List of Tables ...
Страница 24: ...M160 Internet Router Hardware Guide xxiv Requesting Support ...
Страница 26: ...2 Product Overview ...
Страница 30: ...M160 Internet Router Hardware Guide 6 Safety Requirements Warnings and Guidelines ...
Страница 66: ...M160 Internet Router Hardware Guide 42 Cable Management System ...
Страница 80: ...M160 Internet Router Hardware Guide 56 Routing Engine Architecture ...
Страница 82: ...58 Initial Installation ...
Страница 104: ...M160 Internet Router Hardware Guide 80 Unpacking the Router ...
Страница 148: ...M160 Internet Router Hardware Guide 124 Configuring the JUNOS Internet Software ...
Страница 150: ...126 Hardware Maintenance Replacement and Troubleshooting Procedures ...
Страница 242: ...M160 Internet Router Hardware Guide 218 Troubleshooting the Power System ...
Страница 244: ...220 Appendixes ...
Страница 292: ...M160 Internet Router Hardware Guide 268 Packing Components for Shipment ...
Страница 301: ...Part 5 Index Index 277 ...
Страница 302: ...278 Index ...