Chapter 10. Failover
Failover provides redundancy in the event of a hardware or software failure. There are two types of failover:
Hardware failover
Stateful failover
Either of these methods provides redundancy, but the difference between them is that hardware failover will drop the user’s connections when a failover occurs. This means that the user must reconnect. This type of connection is provided by a serial cable if you have a PIX or a LAN connection on either the PIX or the ASA. With stateful failover, the user connections will remain active. This is provided by a stateful failover LAN link. The stateful LAN link and the LAN connection used as the failover link can be the same LAN interface.
Modes of Operation
Of the two types of failover, two ...
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