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CHAPTER 15
Troubleshooting M40e Hardware
Components
•
Overview of Troubleshooting Resources for the M40e Router on page 145
•
Troubleshooting the Cooling System on the M40e Router on page 150
•
Troubleshooting FPCs on the M40e Router on page 152
•
Troubleshooting PICs on the M40e Router on page 153
•
Troubleshooting the M40e Power System When All LEDs on Both Supplies Are
Off on page 155
•
Troubleshooting the M40e Power System When All LEDs on One Supply Are Off or
LED States Are Not Correct on page 155
Overview of Troubleshooting Resources for the M40e Router
•
M40e Router Troubleshooting Resources on page 145
•
M40e Router LED Overview on page 146
•
M40e Chassis and Interface Alarm Messages on page 147
•
Using Blown Fuse Indicators to Troubleshoot the M40e Router on page 149
M40e Router Troubleshooting Resources
To troubleshoot a router, you use the Junos OS command-line interface (CLI), LCD,
alarms, devices connected to the alarm relay contacts on the TXP-CIP, and LEDs on both
the components and craft interface.
•
LEDs—When the Routing Engine detects an alarm condition, it lights the red or yellow
alarm LED on the craft interface as appropriate. In addition, you can also use the
component-specific LEDs on the craft interface and on the faceplate of a component
to troubleshoot the routing matrix.
See “M40e Router LED Overview” on page 146
•
LCD—When a red or yellow alarm occurs, the cause of the alarm messages is displayed
on the craft interface LCD. Use the CLI to display more information about the alarm.
•
Alarm devices connected to the alarm relay contact on the TXP-CIP—When a red or
yellow alarm occurs, it trips the corresponding alarm relay contact on the TXP-CIP.
145
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