3 months after the fact... we LOST AVC reporting which means we had it, which means we had already purchased the licenses. Not sure if you really thought this was a helpful answer.
The problem turned out to be that during PI upgrade, the destination netflow collector IP address was changed to a nonsensical value- not by us but by the process itself. We've seen all kinds of settings change during controller or NMS upgrades, and it's just one more thing to not love about Cisco wireless.
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...