4-1
4
Troubleshooting
This section describes how to troubleshoot the switch. For more information, see the
chapter “Troubleshooting” in the HP PS1810 Switch Series Management and
Configuration Guide, available on the HP web site,
http://www.hp.com/networking/support.
This chapter describes the following:
■ Basic troubleshooting tips (page 4-1)
■ Diagnosing with the LEDs (page 4-2)
■ Testing the switch by resetting it (page 4-4)
■ Forgotten the IP address or password (page 4-4)
■ HP Customer Support Services (page 4-5)
Basic troubleshooting tips
Common problems and their solutions are listed in the following table.
Problem Resolution
Switch fails Power-On Self
Test (POST)
Troubleshoot using the LEDs. See “Diagnosing with the
LEDs” on page 4-2
Link light does not light when
a cable is connected.
The switch may be enabled in Green Mode, where port
Link LEDs would be off.
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.
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