I have a WCS, four 5508 controllers, Cisco 3750X switches, and both autonomous Cisco 1200, and LightWeight 3502i in service.
The problems I am having, is that some of my Access Point reset for no apparent reason, and I get alerted by my NMS.
When I look at the switch port, that connects an access point that reported down, I see the POE switch port went down and back up in 4 seconds, just long enough for the access point to reset.
There are no errors on the switch port(s). No cable or speed/duplex issues. Switch IOS: c3750e-universalk9-mz.122-55.se1
There are no other pertinent entries in the switch log. Just that the port went down and then back up. Always in 4 seconds.
When a reset happens the WCS reports on the access point:
'802.11/b/g/n' interface of AP associated to controller 172.20.0.x is down. Reason: Indicates that while the radio state should be updated on controller, no reset should be reported
But nothing else, except that the radio came back up.
This is happening two or three times a day, and rotates. It seems that it never happens at the same time of the day, or the same access point, or the same switch. (I have over 1000 access points and 500 switches in service)
I am curious if the WCS is automatically resetting the access point radios, which is causing the switch port to go down/up?
And if so, is it possible to turn off the automatic reset?
Any suggestions on what I can do to find out what is causing this would be greatly appreciated.
This is not a WCS induced issue (or atleast I don't believe it is); I had a client that I worked with about a year ago, that was using 4400's and 1200's, 1252's, 1130's and they started having the same issue.. It was random both in terms of occurance time and the device to it happen to.. I don't recall if it was solved and am checking with the helpdesk guys that worked it to see if there was a root cause found.
Did you find a cause and/or solution? I'm having the same issues with 1142N's on a WLC5508 with software version 18.104.22.168 and Prime Infrastructure 3.0.2. I've had this issue for a while now. I used to have it with software version 22.214.171.124 and prime 2.1.0 through 3.0 as well. The frequency seems to be increasing, but I can't find any reasonable explanation. Changing the hardware didn't help. I tried a couple of AP's but they still have the issue.
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Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
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