On occasion I get a call from our helpdesk about a student laptop that will not connect our wireless. It will connect to the signal and I'll see it in the controller but it will not get an IP address. Currently I have a student with this very problem and he was kind enough to leave it at the helpdesk so we could troubleshoot it today. No matter what I do I cannot seem to get his laptop to get an address. And he tells me it works just fine everywhere else but here. (I hate it when they say that LOL)
Here is a look at its connection:
and
On the client side of things we have tried:
- disabling IPv6 (shouldn't matter but worth a shot)
- updating WLAN NIC drivers
- Deleting WLAN NIC out for device manager and reinstalling
- flushing cache
- ever popular disable/re-enable of WLAN NIC
- various CLI ipconfig /release & renew commands
- rebooting (of course)
On the controller side of things I have:
- checked the blacklists as this is blacklist type behavior, blacklist continually clear
- checked on signal strength to the client
- checked interference levels on the AP the client is trying to connect to
- Checked and double checked the DHCP server, always plenty of open leases for new clients
- issued a #clear IP DHCP binding on the controller in question just to make sure there were no DHCP lease issues
Not sure where to go from here gang, any ideas?