Initially I thought the APs were actually rebooting, but that turns out
not to be the case. The "uptime" for an AP that experiences this is
always in the range of days if not weeks. It appears to just be the
CAPWAP session that stalls out.
I have tried some correlation with WCS but still haven't found a common
thread.
-dan
Dan Brisson
Network Engineer
University of Vermont
(Ph) 802.656.8111
[email protected]
On 1/31/12 9:26 AM, Mike King wrote:
Back in the bad old 4.0 code days (4 + years ago), I hit a bug when
more than 25 people associated to an access point, it
would spontaneously reboot.
See if you can see a correlation in WCS, look for number of
associations, number of rouge clients, number of rouge AP's.
Mike
On Tue, Jan 31, 2012 at 8:46 AM, Mike Goebel <[email protected]
<mailto:[email protected]>> wrote:
How big are your subnets the APs reside on, and how is your
latency from the controllers to the APs? I know the APs are
latency sensitive.
Mike
On 1/31/2012 8:44 AM, Scott Smith wrote:
We installed around 700 over the summer in our residence halls
as well.
I've seen the same issue. However we've never had WCS until
the same
project. I'm starting to wonder as well.
Yup....it's a Droid !!!
On Jan 31, 2012 7:39 AM, "Dan Brisson" <[email protected]
<mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>> wrote:
I'm curious if any Cisco users out there are experiencing
or have
experienced what we're seeing on our campus. This past
summer we
installed 3502i's in all of our residence halls -
approximately 500
total. Ever since the students have moved in, we will get
messages
from WCS stating that "AP XYZ" is down and disassociated
from the
controller. When I check out the AP, the uptime is fine,
but the
"CAPWAP join time" is for like 30 seconds, or however long
it took
me to check.
We've tracked this and it is totally random as to what AP
will drop,
which makes troubleshooting this very tough. The log on the AP
isn't helpful. I'm working with TAC who suggests that
keepalives
are getting missed. I'm not sure why that would be the
case since
we have another 500 or so APs on the admin side that very
rarely
drop. Adding to that, when the students left for break, the AP
drops stopped. They came back, and sure enough, the drops
start up
again.
I will say that the AP always joins back immediately, but
for the
time that it does drop A) I'm sure connectivity is affected
in that
area and B) we get an email.
Anyone experiencing this?
Thanks,
-dan
--
Dan Brisson
Network Engineer
University of Vermont
(Ph) 802.656.8111 <tel:802.656.8111> <tel:802.656.8111
<tel:802.656.8111>>
[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>
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Mike Goebel
Network Programmer
Office of Information Technology
Western Michigan University
Phone: 269-387-0453 <tel:269-387-0453>
Email: [email protected] <mailto:[email protected]>
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