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4-1

Troubleshooting

This section describes how to troubleshoot the switch. For more information,

see the chapter “Troubleshooting” in the ProCurve Series 1810G Switch

Management and Configuration Guide, available on the ProCurve

Networking Web site,

http://www.hp.com/go/procurve/manuals.

This chapter describes the following:

■ basic troubleshooting tips (page 4-1)

■ diagnosing with the LEDs (page 4-2)

■ forgotten the IP address or password (page 4-3)

■ testing the switch by resetting It (page 4-4)

■ HP Customer Support Services (page 4-4)

Basic Troubleshooting Tips

Common problems and their solutions are listed in the following table.

For more information on possible network problems and their solutions, refer

to the technical note “Troubleshooting LAN Performance and Intermittent

Connectivity Problems”, which can be found on the ProCurve Networking

Web site,

http://www.hp.com/go/procurve, in the Information Library section.

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 and Mode LEDs would be off. Press the LED Mode

button to temporarily override Green Mode.

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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