An organization is conducting a risk assessment and identifies a requirement for high-availability secure access. In a Cisco ASA-based design, which feature ensures stateful failover occurs without disrupting active connections?
Trap 1: Configuring OSPF adjacency timers for sub-second convergence.
OSPF timers optimize routing, not ASA session persistence.
Trap 2: HSRP (Hot Standby Router Protocol) on the interfaces.
HSRP provides gateway redundancy but does not sync ASA connection states.
Trap 3: Cisco Adaptive Security Device Manager (ASDM) Cluster monitoring.
ASDM is a management tool, not a failover mechanism.
- A
Configuring OSPF adjacency timers for sub-second convergence.
Why it fails: OSPF timers optimize routing, not ASA session persistence.
- B
Active/Active failover with state synchronization configured.
Active/Active failover with state synchronisation replicates connection state between paired Cisco ASAs, so the surviving unit continues existing flows. This satisfies the requirement that failover occurs without disrupting active connections, unlike stateless failover which drops sessions.
- C
HSRP (Hot Standby Router Protocol) on the interfaces.
Why it fails: HSRP provides gateway redundancy but does not sync ASA connection states.
- D
Cisco Adaptive Security Device Manager (ASDM) Cluster monitoring.
Why it fails: ASDM is a management tool, not a failover mechanism.