Juniper Networks ERX-705, ERX-1410, ERX-1440, ERX-700 manual Troubleshooting, Diagnosing Problems

Troubleshooting 8

This chapter explains how you can troubleshoot a specific problem at system power-up, such as abnormal LED activity or no system power.

Topic	Page
Diagnosing Problems	8-1
Troubleshooting Power Failures	8-2
Understanding Status LEDs	8-3
Monitoring Temperatures of Modules	8-10
Resetting Line Modules and SRP Modules	8-11
Double-Bit Errors on SRP Modules	8-11

Diagnosing Problems

The information in this chapter can help you identify problems by observing diagnostic signs. Your initial response to a system problem should be to check power connections, observe the system’s LEDs carefully, and check cable connections on the system modules.

If a problem is beyond the scope of this chapter, refer to Appendix F,

Customer Service for instructions.

Power Failure

When you power up the system and it does not respond normally, refer to the troubleshooting suggestions in Table 8-1.