What Windows server DHCP scope/server options need to be configured when working with an active passive 5500NX controller cluster for layer3 ap adoption to work properly ? Can a cluster be update or should i update both controllers before building a cluster ?
Our nx5500 controllers will be handing out the address and not our DHCP servers we just need to point everything in the right direction.
The Option-189 that you have there is for WiNG-4 migrations. If all of your APs/controllers are running WiNG-5 now, then I don't think that this DHCP Option is even used by the APs any longer.
Your Option-191 setup should end up looking like this: (This assumes level-2 MINT adoption)