We have a Fortigate HA with load balance all enabled, and we are monitoring the behavior, and I can see many retransmissions between slave and master, just when the slave unit process the packet, see this picture:
Anyone known if this is normal? when we have load balance all enabled?
The real advantage of the a-a HA load balancing can be seen with UTM. If you do not have UTM, then there is no real benefit of load balancing.
As Jan said in the previous post, the overhead is more than the load sharing benefit you get out of it.
As I mentioned in earlier posts, if you want a real load sharing between the two devices for all the sessions(with and without UTM), virtual clustering which is possible with VDOMs where each VDOM is served by one unit.
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