This information may now be outdated, but I ran into a similar problem
when working at the University of Iowa with version 4.1.185.0. We had
many AP reboots every day. Periodically, the AP reboots would continue
en masse for several hours. I disabled RRM, and the reboots stopped.
There was only one reboot within a 24-hour period following that, and
the 802.11a radio of that AP was using a DFS-related channel.
I subsequently removed channels that had to be DFS-compliant from
being used by RRM. I opened a TAC case, and the TAC engineer requested
that we remove a couple of channels that also happened to be in the
DFS-compliant range. That may have nothing to do with the reboots, but
I thought it was odd.
I believe I re-enabled RRM, but configured it so that new channel and
power selections had to be manually invoked. After that, the system
was relatively stable. There were still some periodic AP reboots, but
you might wait a month for a single reboot to occur, whereas before
there were many happening daily.
I am no longer at Iowa, so I can't lookup the exact configuration.
There is my 2 cents. Take it or leave it.
-Jason
On Oct 8, 2008, at 4:13 PM, Hector J Rios wrote:
Manoj,
I’m so glad you mentioned it. I thought we were the only ones. We
run 4.2.130 also and have the same issue. We’ve been working with
TAC for the past two months and they still can’t figure out what
causes that behavior.
Louisiana State University
Hector Rios
From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]
] On Behalf Of Manoj Abeysekera
Sent: Wednesday, October 08, 2008 1:55 PM
To: [email protected]
Subject: Re: [WIRELESS-LAN] Cisco Wireless Controller
Mike,
We run 4.2.130. I was told by Cisco Engineer to downgrade to this
version as we had a nightmare with 5.x. However we still get Clients
disconnected at random intervals(Radio seems to reset somehow
forcing clients to roam to nearby LAP's). Cisco has no clue and i
wonder why not many people have called them yet.
WLC's 4404
AP's 1230
Open Network
Let me know if you find a cure..
Good Luck!
Manoj
American U.
Mike King <[EMAIL PROTECTED]>
Sent by: The EDUCAUSE Wireless Issues Constituent Group Listserv <[email protected]
>
10/08/2008 02:44 PM
Please respond to
The EDUCAUSE Wireless Issues Constituent Group Listserv
<[email protected]>
To
[email protected]
cc
Subject
[WIRELESS-LAN] Cisco Wireless Controller
So Cisco LWAPP people,
Currently we're on 4.1.185.0. It's a 4402 controller, with 1131AG
access points.
Anyone made the leap to one of the 4.2, 5.0 , or 5.1 trains without
seriously regretting it?
We've had some random disconnects with clients. It's pretty common,
happening to most all users. We're running WPA-PSK, so it's not an
802.1x issue. Before we involve TAC, we figured we should upgrade
to a new code train.
Mike
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