LAN and Stateful Failover Interfaces

Answered Question
Feb 11th, 2008

Does anyone have any experience with using the same interface for LAN and stateful failover? Cisco documentation suggests using two interfaces. I am about to convert from a PIX 525 to an ASA (deciding on model). I would prefer to not burn 2 of the 4 GiE interfaces on failover. Currently my PIX 525 uses a serial cable and a 100 Mb interface. The stateful interface is passing about 10 Mb /sec of traffic. The serial cable is rated at 115K. These numbers would suggest 1 GiE interface would be plenty.


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Correct Answer by adam.sellhorn about 8 years 11 months ago

You can use one interface for both if you wish. This is in fact how I setup my ASA's. Here is some documentation to help you:

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