Question on FortiGate HA

[khagskhap]

Is it mandatory that replication must be active all the time between primary/active fortigate and secondary/passive fortigate?

If so, why the memory usage and other details are not in sync on both devices? Please explain with some examples. Thank you!

[Mohamed_Gaber]

"memory usage and other details are not in sync"; it is normal to be different as they depend on the load on each device. They Synchronize the routing table, DHCP information, running configuration

[alif]

Hi @khagskhap,

All the sessions are not sync between master and slave units. The session table output will show different number of sessions on each device. Hence, you will see different CPU/Memory utilization on each unit in an HA Cluster.

Please refer to the below link for details.
https://community.fortinet.com/t5/FortiGate/Technical-Tip-HA-session-failover-session-pickup/ta-p/19...