Yesterday we have a big problem with our wireless infraestructure. For any reason our WLC4400 made a reboot(or something like that) and ours APs(1524) didn't connect again. We try to find the problem and find in the logs the message : "Controller time base status - Controller is out of sync with the central timebase". We don't know if this message have some relation with the reboot.
Another problem was the authentication of our AP. The APs doesn't authenticated to the WLC, we suppose that was because in the WLC the option of allow clients with dinamic IP enable automactly where the system restart and we have clients with static IP(DHCP Server). It's possible avoid to that feature enable automactly when the system reboot??
First, please make sure your WLC is in time; any wireless infrastructure should be synchronize with a ntp server, first of all because the Ap´s and WLC use certificates to autenticate and register them. Make sure the mac of your MESH AP´s are in you mac-filtering.
Then, if you ap´s not register in your WLC, you can capture the output of the following commands:
So it is possible that a problem in the synchronize create problems in the authetication and registering of the APs??? why happen this??? It is possible that the controller restart automatic by cause of this problem in the syncronization??? we have all the mac of ours APs in the mac-filtering.
And what about the case of enable automatic dhcp to clients connection when the controller restart. Is there any way to avoid this situation??? We have clients with static IP and we need that they stay connecting all the time.
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...