I am pretty new to F5 Load balancers so this might be a very simple question.
I have below setup:
Client --- > LB (VIP) ---> Servers.
When I access VIP with this setting, I am not able to load the page completely - which I believe might be something in our application.
But, even if I access the node directly (with static route on servers), LB seems to drop the return traffic. I see SYN-ACKs being RST. (It does not see the SYNs because it probably follows different path).
I have Forwarding IP Virtual server (With FastL4) allowing on all VLANs for any source and any destination.
I am running 15.1.0 version.
Verified that F5 can ping client IP and back-end nodes.. so it knows how to reach back the client.
Any ideas why F5 would block out of order SYN-ACKs? Is there any other obvious configuration that I missed?
Solved! Go to Solution.