350-701 · Question #231
A network engineer is deciding whether to use stateful or stateless failover when configuring two ASAs for high availability. What is the connection status in both cases?
The correct answer is D. preserved with stateful failover and need to be reestablished with stateless failover. With stateful failover, active connections are preserved across a failover event, whereas with stateless failover, all active connections must be reestablished after a failover.
Question
A network engineer is deciding whether to use stateful or stateless failover when configuring two ASAs for high availability. What is the connection status in both cases?
Options
- Aneed to be reestablished with stateful failover and preserved with stateless failover
- Bneed to be reestablished with both stateful and stateless failover
- Cpreserved with both stateful and stateless failover
- Dpreserved with stateful failover and need to be reestablished with stateless failover
How the community answered
(22 responses)- A5% (1)
- D95% (21)
Why each option
With stateful failover, active connections are preserved across a failover event, whereas with stateless failover, all active connections must be reestablished after a failover.
This choice incorrectly reverses the behavior of stateful and stateless failover; stateful preserves connections, and stateless requires reestablishment.
This choice is incorrect because stateful failover is designed to preserve connections.
This choice is incorrect because stateless failover does not preserve connections; they must be reestablished.
In stateful failover, the active unit continuously synchronizes connection state information to the standby unit, ensuring that existing connections are seamlessly maintained if a failover occurs. In contrast, stateless failover does not synchronize connection states, so all active connections are dropped and must be reestablished by clients after the failover.
Concept tested: ASA stateful vs. stateless failover
Source: https://www.cisco.com/c/en/us/td/docs/security/asa/asa90/configuration/guide/asa_90_cli_config/ha_overview.html
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