Are these two controller in same mobility group ? It is required to learn the new WLC mgt IP via mobility messages.
Otherwise you have is to configure DHCP option 43 (or any other mechanism to discover WLC mgt IP by AP) with new controller management address for AP mgt dhcp pools. Then reboot the AP while your old controller shutdown. Then AP shoud find the new WLC & register with it
I've tried it. However, access points will not connect to the new controller. Do I need to upgrade the firmware to access points before they can connect to the new controller? When there is a major leap forward from the old 4402 to the virtual?
The vWLC must be running v7.3 or newer and the 4400's only support v7.0.x. Make sure that the AP's you have on the WLC is supported on the code you have on the vWLC. Also note that APs that need to join the vWLC need to be primed in a WLC running v7.3 or later or else the AP's need to have the latest rcv image uploaded to them.
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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