I already know that failed attempt is due improper configuratoin on client. failure code in ACS is "EAP type not configured". Those stations -that high likely a mobile phones - usually use EAP-SIM which is not even supported by our ACS.
EAP-SIM configuration by default has "User name in Use" configured as "From SIM card". This is why we possibly seeing those.
Tracking the device is very difficult due to users are mobile and there are too many users around in same area/areas.
I just now successfully isolated that all devices reported this are Nokia devices!! Now it is easier to go to some area and ask about those who have Nokia phones rather than checking everyone's phone.
Thanks ya m3almi.
Rating useful replies is more useful than saying "Thank you"
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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 f...
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. Prerequisites: Powershell SNMP Module
(Install-Module -Name SNMP) SNMP Write Access to y...