Cisco Cisco Access Registrar 4.2 Especificaciones descargar pdf (Pagina 584)

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Cisco Wireless LAN Controller Configuration Guide

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Appendix D Troubleshooting

Troubleshooting CCXv5 Client Devices

Diagnostic Channel

The diagnostic channel feature enables you to troubleshoot problems regarding client communication

with a WLAN. The client and access points can be put through a defined set of tests in an attempt to

identify the cause of communication difficulties the client is experiencing and then allow corrective

measures to be taken to make the client operational on the network. You can use the controller GUI or

CLI to enable the diagnostic channel, and you can use the controller CLI or WCS to run the diagnostic

tests.

Note Cisco recommends that you enable the diagnostic channel feature only for non-anchored SSIDs that use

the management interface.

Client Reporting

The client reporting protocol is used by the client and the access point to exchange client information.

Client reports are collected automatically when the client associates. You can use the controller GUI or

CLI to send a client report request to any CCXv5 client any time after the client associates. There are

four types of client reports:

• Client profile—Provides information about the configuration of the client.

• Operating parameters—Provides the details of the client’s current operational modes.

• Manufacturers’ information—Provides data about the wireless LAN client adapter in use.

• Client capabilities—Provides information about the client’s capabilities.

Roaming and Real-Time Diagnostics

You can use roaming and real-time logs and statistics to solve system problems. The event log enables

you to identify and track the behavior of a client device. It is especially useful when attempting to

diagnose difficulties that a user may be having on a WLAN. The event log provides a log of events and

reports them to the access point. There are three categories of event logs:

• Roaming log—This log provides a historical view of the roaming events for a given client. The client

maintains a minimum of five previous roaming events including failed attempts and successful

roams.

• Robust Security Network Association (RSNA) log—This log provides a historical view of the

authentication events for a given client. The client maintains a minimum of five previous

authentication attempts including failed attempts and successful ones.

• Syslog—This log provides internal system information from the client. For example, it may indicate

problems with 802.11 operation, system operation, and so on.

The statistics report provides 802.1X and security information for the client. You can use the controller

CLI to send the event log and statistics request to any CCXv5 client any time after the client associates.

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