Troubleshooting; Diagnosing Problems - Juniper E-Series Installation And User Manual

Troubleshooting

Diagnosing Problems

This chapter explains how you can troubleshoot a specific problem, such
as abnormal LED activity or no system power, when you power up the
router.
Topic
Diagnosing Problems
Troubleshooting Power Failures
Understanding Status LEDs to Troubleshoot
Monitoring Temperatures of Modules
Resetting Line Modules and SRP Modules
Double-Bit Errors on SRP Modules
Your initial response to a system problem should be to:
1
Check power connections.
2
Observe the system's LEDs carefully.
3
Check cable connections on the system modules.
If a problem is beyond the scope of this chapter, refer to
Customer Support for further instructions.
Note: Running the show version and show hardware commands is often a good
first step when trying to troubleshoot a problem.
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Appendix C,