Troubleshooting Scenarios; Client Unable To Connect To Wireless Network - Avaya WLAN Security Switch 2300 Series Troubleshooting And Debug Manual

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Troubleshooting scenarios

Client unable to connect to wireless network

Typical symptoms:
complete inability of the client to connect to the wireless network
No user session in "show sessions" command output, or only user's mac-address listed with no VLAN, IP, and
username.
Troubleshooting steps:
Update the client.
This includes getting the latest drivers for the NIC as well as OS patches and updated supplicants.
Get the output from "show tech"
You can use the "show tech" (or equivalent in an OEM box) commands to output common
information used to troubleshoot problems. It includes the configuration file as well as the output of
"show ap status", recent syslog entries, and lots of other good information. TAC will always request
it, so you might as well start off by getting it.
Set the system log to "Warning" severity
set log buffer severity warning
This will allow you to see authorization failure messages indicating incorrect VLAN names and other common
authorization failures in the system log buffer.
Turn on dot1x tracing level 10, restricted to one problem client's MAC address
set trace dot1x level 10 mac 00:01:02:03:04:05
clear log trace
Always start with DOT1X tracing, regardless of whether or not the system is using 802.1X
authentication. This will show you the order authentications are attempted in, and whether or not
802.1X, Mac-Auth, Web-based AAA or Last-resort are attempted. With 802.1X clients, pay attention
to the username in the trace, and whether or not it matches any network access rules.
Attempt to authenticate from the problem client and then check the logs.
After attempting to login, check both the system log and the trace log for interesting messages.
If there are no dot1x messages, the client is failing at a very low level, and probably isn't even attempting to
associate to the AP. Performing an over-the-air trace will verify if this is occurring. Some devices may require
the following settings (especially older devices) for connectivity:
NN47250-700 (Version 04.01)