3Com 7600 manual Troubleshooting

B

TROUBLESHOOTING

This chapter explains how to identify and correct problems, and how to perform related diagnostic tasks, such as replacing fuses and cleaning fiber optic cables.

If you have problems that are not addressed in this chapter, contact 3Com Technical Support or your service person. For Technical Support information, see Appendix A: Technical Support

Solving Common Following are common problems which may arise while working with the

Problems7600 Card. If your problem does not appear on this list, you may want to view relevant statistics and parameters using the Administration Console menus (refer to CELLplex 7000 Administration Guide). You can also contact 3Com Technical Support or your service person (refer to AppendixE-TechnicalSupport).Also,besuretoreadthroughthereleasenotes.

Terminal Does

Not Show

Anything

ACT LED Not Blinking

Ethernet Forwarding Failures (Fx port)

If the control terminal is physically connected to the module, but does not load the Administration Console Menus, verify that your terminal setup matches the specifications in the Connecting to the Control Terminal section in Chapter 1. Also, make sure your cable is configured as DTE.

When the CELLplex 7000 is activated, the ACT LEDs on the 7600 Card should be blinking. If not, verify that the module is properly inserted into the chassis of the CELLplex 7000.

Verify that the Link Status LED is lit green. If not, reconnect the Tx side of the connection. If that does not eliminate the problem, check that the connector on the Rx side is properly inserted.

If the Link Status LED is lit, check that the port through which you are trying to forward data has been enabled. If it has been enabled, check