I am getting ready to implement a WLAN where the customer has designed the Management and AP Manger to be on different subnets. I have never done a WLAN implementation in this manner because per Cisco's config guide it states ...
"The AP-manager interface’s IP address must be different from the management interface’s IP address and may or may not be on the same subnet as the management interface. However, Cisco recommends that both interfaces be on the same subnet for optimum access point association."
So, I have always followed this recommendation and have always made the 2 interfaces be in the same subnet with IP's in sequential order. The config guide does say it'll work but I am just not sure what if anything do I have to do for this to work properly ... or if there is really a difference on how the process works doing it either way.
I plan on using LAG with Layer 3 ... most times I place the APs in the same wireless subnet/vlan as the management interface and AP manager but in this case or until I get more info it looks like they all may be in different subnets. So, if that's the case would I just need to use the Option 43 so the APs can find the WLC and if that is the case would I put the AP Manager IP or still use the WLC IP ... guess I would have that same question if I went the DNS route? Or do I still use the WLC IP address for the APs to join and at that point the AP Manager would take over the LWAPP communications?
Thanks for all your help in advance!