HP 6400CL - Manual (Page 49)

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Troubleshooting
This chapter describes how to troubleshoot your switch. This document
describes troubleshooting mostly from a hardware perspective. You can
perform more in-depth troubleshooting on the switch using the software tools
available with the switch, including the full-featured console interface, the
built-in web browser interface, and ProCurve Manager, the SNMP-based
network management tool. For more information, see the chapter “Trouble-
shooting” in the Management and Configuration Guide, which is on the
Documentation CD-ROM that came with your switch.
This chapter describes the following:
■ basic troubleshooting tips ( page 4-1 )
■ diagnosing with the LEDs ( page 4-3 )
■ Proactive Networking tools ( page 4-6 )
■ hardware diagnostic tests ( page 4-7 )
■ restoring the factory default configuration ( page 4-9 )
■ downloading new software to the Switch 6400 ( page 4-10 )
■ ProCurve Customer Support Services ( page 4-11 )
Basic Troubleshooting Tips
Most problems are caused by the following situations. Check for these items
first when starting your troubleshooting:
■ Faulty or loose cables. Look for loose or obviously faulty connections.
If they appear to be OK, make sure the connections are snug. If that does
not correct the problem, try a different cable.
■ Non-standard cables. Non-standard and miswired cables may cause
network collisions and other network problems, and can seriously impair
network performance. Use a new correctly-wired cable or compare your
cable to the cable in appendix B, “Cables and Connectors” for pinouts and
correct cable wiring.