In a typical Active/standby failover scenario, is it complulsory to have an IP reachability between a pair of interfaces ? For e.g DMZ interface on Primary is 192.168.55.1/24 and on secondary is 192.168.55.2/24. Can failover work normally if there is no connectivity between 192.168.55.1 and 192.168.55.1 ?
All the 4 tests i.e.
1. Link Up/Down test
2. Network Activity test
3. ARP test
4. Broadcast Ping test
can be passed without reachablity between the interface pairs.
Can somebody explain this and correct me on this?