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I created a failover configuration on two ASA5545s. I set up, for example, 10.10.10.1 on the management interface of the primary ASA and 10.10.10.2 on the secondary ASA. I know when a failoever happen, two ASAs exchange thier IP addresses which are set up on every interface. Now I want ASAs not to exchange their IP address, in paticular management IP address, in terms of the operation and administration. How can I realize that? Is there any best practice? Thanks.

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Its been a long time since I worked with ASAs but I believe you will need to place them in an active / active configuration. In your current setup when a failure happens the firewalls will use gratuitous arp to assume the failed devices ip configuration. In an active / active both firewalls can forward traffic independently and i believe the IP conf will not “move” to the active device during a failure.

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