Troubleshooting; Basic Troubleshooting Tips - HP ProCurve 420 Installation And Getting Started Manual

Wireless access point

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Troubleshooting

This chapter describes how to troubleshoot your HP Procurve

Access Point 420ww/na. Note that this document describes troubleshooting

mostly from a hardware perspective. You can perform more in-depth trouble-

shooting on the Access Point 420ww/na using the software tools available with the

access point, including the full-featured console interface, and the built-in web

browser interface, or SNMP-based network management tools. For more

information, see the chapter "Troubleshooting" in the Management and

Configuration Guide, which is on the Documentation CD-ROM that came

with your access point.

This chapter describes the following:

Most problems are caused by the following situations. Check for these items

first when starting your troubleshooting:

basic troubleshooting tips (page 4-1)

diagnosing with the LEDs (page 4-3)

Proactive Networking tools (page 4-5)

hardware diagnostic tests (page 4-6)

restoring the factory default configuration (page 4-8)

downloading new software to the Access Point 420wl (page 4-9)

HP Customer Support Services (page 4-9)

Connecting to devices that have a fixed full-duplex configuration.

The RJ-45 port uses auto-negotiation to determine the duplex mode. That

is, when connecting to attached devices, the access point will operate in

one of two ways to determine the link speed and the communication mode

(half duplex or full duplex):

•

If the connected device is also configured to use auto-negotiation, the

access point will automatically negotiate both link speed and commu-

nication mode.

4-1

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