ACS has a lot of feature. To be able to explain what it does and how to configure it in detail is like writing a document.
ACS to make things easy is a Radius Server and a TACAS Server. If you need to understand more or if you need directions in configuring ACS, please look at the ACS configuration guide. You can also perform a search on Google on exactly what you want to do and there are videos.
If you need to get this working soon and you really don't have the experience with radius, I would suggest getting a Cisco partner to help out.
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...