Possibly CSCte55458 where web auth can fail under load on the WLC. This is fixed in 7.0 or the 6.0 MR3-beta you can get from TAC. The 6.0 code does have a software advisory against it, so you might want to think about 7.0 anyway. Also, do the IE machines have any proxy settings? That can disrupt web auth as well.
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...