HP ProCurve 8116fl, Руководство по установке и началу работы

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5
Troubleshooting
This chapter describes how to troubleshoot your ProCurve 8100fl 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. 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 5-3 )
■
Hardware diagnostic tests ( page 5-6 )
■ Restoring the factory default configuration ( page 5-8 )
■
Downloading new code ( page 5-9 )
■ ProCurve Networking customer support services ( page 5-9 )
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-T and 1000Base-T network installation.
■ Invalid Network Topologies. It is important to make sure you have a
valid network topology. Common topology faults include excessive cable
length and excessive repeater delays between end nodes. If you have
network problems after recent changes to the network, change back to
the previous topology. If you no longer experience the problems, the new
topology is probably at fault.
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5-1