We are seeing a very strange issue in our WLAN setup. Our access points hang or reboot randomly. We have WLAN controller 4402 with 25 Cisco 1020 Access points. Our syslog server shows for some access points rebooted. While others just hang and then come back online after 10-15 minutes. We have similar code 220.127.116.11 running at other sites and everything seems to be stable, therefore we do not want to upgrade or install a new code. Any suggestions, or help will be highly appreciated by the experts.
The errors we saw were "[ERROR] spam_lrad.c 1840: AP 00:0b:85:66:77:88 associated. Last AP failure was due to Configuration changes, reason: did not get join response"
We called Cisco TAC, got the case escalated to the highest level possible, till we got hold of the actual developers of the code. Gave Cisco engineers the Sniffer packet information of the wlan controller and AP.
Finally Cisco engineer found a bug in the code 18.104.22.168 The bug will be fixed in the next release.
I didn't see any DHCP info above, but we ran into a problem when our server was reconfigured to hand out all the IP addresses in a subnet vice reserving the IPs for the controller and other static devices. We had an AP with the same IP as the controller and it looked like the WLAN was doing the wave as the APs bounced up and down.
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...