An application is configured so that the same pool member must be used for an entire session, as well as for HTTP and FTP traffic. A user reports that a session has terminated, and the user must…

Cookie persistence is a method of persistence but does not alone ensure session continuity across a failover without mirroring. Session timeout determines how long a session is valid, not how it survives failover.

Stateful failover is a general concept, but the specific settings for persistence and service matching are critical here. Network Failover detection is about the trigger for failover, not the behavior of sessions during failover.

Persistence mirroring ensures that persistence records are synchronized between the active and standby BIG-IP devices, so that a new active device can continue existing sessions after a failover. 'Match Across Services' allows persistence entries to apply to traffic for different services (like HTTP and FTP) from the same client to the same destination, maintaining the session across those services during and after failover.

SYN-cookie insertion threshold and connection low-water mark are related to connection management and DoS protection, not directly to maintaining session persistence across a failover event.