In a large Wireless Lan enviroment for a university, we have 3 WISM moduls attached on a 6k hw - Manged by ACS v188.8.131.52
We recently upgraded the software version of the controllers from 4.x to 184.108.40.206 - the Emergency Image version is 220.127.116.11
Since then, the students with Linux clients have massive connection issue - repeated connection lost in a short time period.
However the students with Windows clients have no problem at all.
The studends report, that their linux clients getting so much of some kind of unnecessary broadcast traffic which can not be handled by the NIC - and the NIC goes down - and this happens all 5-10 minutes.
Affected Linux clients are: Ubuntu v10.10 - also OpenSuse, Fedora and Arch-linx with latest OS version.
Re: Wireless Lan connection issue with Linux clients
few questions :
-What kind of broadcast traffic are the clients receiving exaclty ? knowing that might help to solve the problem
-Do you have "Broadcast Forwarding" enabled or disabled in the general WLC options ? If it's disabled, it means that broadcasts are blocked from wired to wireless, so I doubt your clients would be receiving any broadcast at all actually.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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