Troubleshooting The M320 Pics - Juniper M320 Hardware Manual

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Documentation

Troubleshooting the M320 PICs

Related
Documentation
Copyright © 2015, Juniper Networks, Inc.
When a fuse has blown but the power supplies are still delivering power to the router,
the yellow LED below the fuse lights. The colored indicator bulb inside the fuse becomes
visible through the clear cover on the fuse.
NOTE: The LEDs are each about 0.1in. (2 mm) square. They might be difficult
to see when not lit.
A blown fuse can cause a component to fail even though it is correctly installed and the
power supplies are functioning. Check for a blown fuse in the following circumstances:
The LED that indicates normal operation for the component fails to light.
The appropriate CLI
show chassis environment
is installed but is not receiving power.
M320 Fuses on page 12
M320 Chassis and Interface Alarm Messages on page 285
To troubleshoot the PICs:
To check the status of each port on a PIC, look at the LED located on the PIC faceplate.
For information about the meaning of LED states on different PICs, see the M320
Multiservice Edge Router Interface Module Reference.
To check the status of a PIC, issue the following CLI command. The PIC slots in the
FPC are numbered from
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
M320 PIC Description on page 54
Maintaining M320 PICs and PIC Cables on page 276
Replacing M320 PIC Cables on page 237
command indicates that the component
through , top to bottom:
0 3
Chapter 32: Troubleshooting Components
CLI Explorer
.
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