A BIG-IP Administrator need to ensure that a pool member and down by the monitor the BIG-IP system sends existing connections to another be pool member. Which should the BIG-IP Administrator perform t

The "Action on Service Down" setting is configured at the pool or pool member level, not within a general "server configuration" as implied.

Reconfiguring pool members as UP would prevent the monitor from marking them down, which contradicts the goal of handling traffic for a member that is already down.

Enabling mirroring within a persistence profile ensures session state synchronization for failover, but it does not directly control the reselection of a new pool member for existing connections when a member goes down.

The "Action on Service Down" setting within the pool configuration determines how the BIG-IP system handles existing connections when a monitored pool member becomes unavailable; setting it to "reselect" forces these connections to a new, available pool member. This ensures traffic continues to flow through a healthy member without interruption from the failed server.