Obviously a WLC can only have one version of code on it, but if you have two (or more) WLCs, each running different versions of code, then "yes", is the answer. Simply setup a mobility group, configure the same SSIDs on all WLCs, and away you go.
hey Richard, thanks for your reply... appreciate it!
btw, roaming is one thing,,, ap failover is another...
i have 3 WiSM's... and i have only 20 1510 ap's... can the mesh ap's be mixed with the non-mesh ap's in one controller? i plan to reserve/dedicate one controller for the 1510 ap's but failover is the issue... can the mesh ap's failover to the other WLC's, where non-mesh ap's are registered?
If you're using new code, the answer is "no". New code is specifically designed for Mesh or None-Mesh deployments, the different types cannot be mixed.
Older code did support both types, so if you're considering an N+1 redundancy style deployment, and providing you don't mind the failover taking a few minutes, you could leave your "+1" WLC on an older code that does support both types of deployment.
w.r.t. WiSMs, the two controllers that are housed by a single WiSM can quite happily run different versions of code.
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
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