Troubleshooting; Basic Troubleshooting Tips - HP J4818A Installation And Getting Started Manual

Troubleshooting

This chapter describes how to troubleshoot your HP ProCurve Series 2300
and 2500 switches. Note that this document describes troubleshooting mostly
from a hardware perspective. You can perform more in-depth troubleshooting
on the Series 2500 switches using the software tools available with the switch,
including the full-featured console interface, the built-in web browser inter-
face, and HP TopTools for Hubs & Switches, the SNMP-based network
management tool. See the Troubleshooting chapter of the Management and
Configuration Guide included with your Series 2500 switch for more infor-
mation.
This chapter describes the following:
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Basic Troubleshooting Tips

Most problems are caused by the following situations. Check for these items
first when starting your troubleshooting:
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basic troubleshooting tips (page 3-1)
diagnosing with the LEDs (page 3-4)
Proactive Networking tools (page 3-8)
hardware diagnostic tests (page 3-9)
restoring the factory default configuration (page 3-11)
downloading new code to Series 2300 switches (page 3-12)
HP Customer Support Services (page 3-13)
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. A category 5 cable tester is a recommended tool for
every 100Base-TX and 1000Base-T network installation.
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