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5-1

Troubleshooting

This chapter describes how to troubleshoot your Series 5400zl Switches. Note

that this document describes troubleshooting mostly from a hardware

perspective. You can perform more in-depth troubleshooting using the soft-

ware 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 on “Troubleshooting” in the Management and Configuration Guide

that is on the documentation CD-ROM included with your switch.

This chapter describes the following:

■ basic troubleshooting tips (page 5-1)

■ diagnosing with the LEDs (page 5-4)

■ Proactive Networking tools (page 5-9)

■ hardware diagnostic tests (page 5-10)

■ restoring the factory default configuration (page 5-12)

■ downloading new code (page 5-13)

■ HP Customer Support Services (page 5-13)

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, “Switch Ports and Network Cables” for

pinouts and correct cable wiring. A category 5 cable tester is a recom-

mended tool for every 100Base-TX and 1000Base-T network installation.

HP ProCurve Series 5400zl User Manual

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