4
Troubleshooting
This chapter describes how to troubleshoot your Series 4100gl Switches. This
document describes troubleshooting mostly from a hardware perspective.
You can perform more in-depth troubleshooting using the software tools
available with the switch, including the full-featured console interface, the
built-in web browser interface, and HP ProCurve Manager for Hubs &
Switches, 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 (
)
■
diagnosing with the LEDs (
■
Proactive Networking tools (
■
hardware diagnostic tests (
)
■
restoring the factory default configuration (
■
downloading new code (
■
HP Customer Support Services (
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, ensure 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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