A common issue presented to my is Anchor controller HA being a manual failover process as opposed to automatic.
Scenario:
> 2 DCs with an anochor controller within each DCs DMZ
> DCs seperated via L3 interconnect
> same VLAN number within each DC (for SSID)
> different subnet for said VLAN within each DC
> local controller has 2 GRE tunnels, one to each Anchor controller
> local controller has same VLAN number within the same subnet as the "primary anchor controller"
> manual failover by having to change SVI IP address to bring up tunnel to secondary anchor controller
network diagram of a demo network attached
hoping to utilise the L3 GRE tunnel option available in 6.4 between the DCs
Thoughts?