The configuration was then saved. L3 Mobility is still not working, what could be the cause?

A network needs to implement L3 roaming. On the Master Controller, the administrator, enabled IP mobility, created a Domain and created the HAT table with all the IP addresses of the local controllers. He then enabled Mobility on the VAPs.

The configuration was then saved. L3 Mobility is still not working, what could be the cause? (Choose two)
A . IP Mobility must be enabled on all controllers.
B . IP-IP tunnels must be configured between controllers.
C . The Domain must activated on each controller.
D . The HAT table must be configured on each controller.
E . The HAT table must be configured with each controllers supported subnets.

Answer: AC

Explanation:

3-6 – RF Management