I have the same issue, but only for some clients. Contractors using Nortel for instance work fine, but another contractor using Cisco v4.6 can't stay connected for more than 5 minutes. I opened a case with Cisco and they could not solve the problem. Try reading this:
The BBSM isbasically neutral in VPN. However, I found that by changing tha aging period in an idle connection from the default 300 seconds to a higher number, clients experiencing dropped connections are now staying connected. I'm not sure, but maybe the BBSM sees certain VPN connections as idle after a period of time even though traffic is still passing. You might also look at tranparent tunneling.
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...