You don't say what form of 802.1X you are using, but if you are using PEAP or EAP-TLS, your RADIUS server certificate may have expired (or something else has happened to make the clients not trust the RADIUS server's certificate).
We are using PEAP-MS-CHAP v2 . The IAS certificate is valid to 2014. We have about 300 laptops, but now and then some of them fails to authenticate. Yesterday I noticed that if I had one of the failing computers connected with wire, after some minutes it suddenly authenticated wireless!
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...