Hello Muthu,
We don't have a virtual controller (VC) document for the APs. Basically, you take the AP you wish to have as the VC AP and configured it completely up. The other APs will pull the settings from the VC Configuration (LAN, WAN, Wireless, Security, Services and Management) upon adoption.
You want to test all WLANs and any features you have configured on the VC AP first, prior to bringing on the other APs. Once you have verified full connectivity, proceed to the Configuration/Basic screen on the VC AP and check mark the Virtual Controller box and hit apply.
Prior to bringing on the other APs, you need to ensure that the VC AP is setup to auto-upgrade the adopting APs. All APs must be running the same firmware version in order for VC feature to work as advertise.
Please use the following link to stage the VC to auto-upgrade the adopting APs.
Once all APs are adopted, running same firmware, and valid configuration from VC, you can access the VC UI and under Configuration/Access Points, this is where you can perform static IP overrides and AP name for each AP.
I hope this helps. If not, please have get a support case opened up with us. Thanks.
https://gtacknowledge.extremenetworks.com/articles/Solution/Virtual-Controller-adopted-AP-s-won-t-up...
