1. Add a second controller that is the same size controller that you currently have. Be careful to never exceed the total capacity of a single controller, or else you lose your full redundancy.
2. Keep the controller at the same site, but connect it to a different switch in your core. If you are connecting it to a chassis switch, connect the two cables to different blades for highest redundancy.
3. Configure each controller to use LAG (Etherchannel).
4. Split your access points between the two controllers. Best practice is to group APs together that are physically close, so roaming occurs between APs that are on the same controller. Don't "checkboard" your APs when assigning primary controllers.
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...