Related
Documentation
MX480 Modular Interface Card (MIC) Description on page 76•
• Maintaining MX480 MICs on page 430
• Replacing an MX480 MIC on page 337
Troubleshooting the MX480 MPCs
Problem Description: The MPCs are not functioning normally.
Solution • Monitor the green LED labeled OK above the MPC on the craft interface as soon as an
MPC is seated in an operating router.
The Routing Engine downloads the MPC software to it under two conditions: The MPC
is present when the Routing Engine boots Junos OS, and the MPC is installed and
requested online through the CLI or push button on the front panel. The MPC then runs
diagnostics, during which the OK LED blinks. When the MPC is online and functioning
normally, the OK LED lights green steadily.
• Make sure the MPC is properly seated in the midplane. Check that each ejector handle
has been turned clockwise and is tight.
• Check the OK/FAIL LED on the MPC and OK and FAIL line card LEDs on the craft
interface. When the MPC is online and functioning normally, the OK LED lights green
steadily.
• Issue the show chassis fpc command to check the status of installed MPCs. As shown
in the sample output, the value Online in the column labeled State indicates that the
MPC is functioning normally:
user@host> show chassis fpc
Temp CPU Utilization (%) Memory Utilization (%)
Slot State (C) Total Interrupt DRAM (MB) Heap Buffer
0 Online 36 3 0 2048 14 13
1 Online 40 5 0 2048 26 13
2 Online 41 6 0 1024 7 43
3 Online 43 5 0 1024 16 57
4 Online 24 3 0 1024 13 21
5 Empty
NOTE: The show chassis fpc command displays the status of the MPCs.
For more detailed output, add the detail option. The following example does not specify
a slot number, which is optional:
user@host> show chassis fpc detail
Slot 0 information:
State Online
Temperature 33 degrees C / 91 degrees F
Total CPU DRAM 1024 MB
Total RLDRAM 256 MB
447Copyright © 2017, Juniper Networks, Inc.
Chapter 30: Troubleshooting Components
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