Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

stephiez_239090's avatar
stephiez_239090
Icon for Nimbostratus rankNimbostratus
Jan 16, 2016

How chatty is connection mirroring?

I have a U-shaped topology, 2 F5s to 2 routing-switches: +---------+ +---------+ | | | LB2 | | LB1 | | | ...
big-ip
security
Amine_Kadimi's avatar
Amine_Kadimi
Icon for MVP rankMVP
Jan 17, 2016

Connection mirroring is extremely chatty because each connection to the active unit is mirrored to the standby. So, what you are seeing is the natural behavior. There's few alternatives, the best and recommended one is to have a dedicated mirroring VLAN carried in a direct link between the nodes, or at least through dedicated switch interfaces.