I'm trying to configure failover on a pair of ASA 5510 firewalls. Both are running Security Plus Licenses. How I have know PIX and ASA failover to work is that each interface on both firewalls have addresses on the same subnet and the addresses that is functional is that of the primary. When I issue a 'show failover' on both ASA in my current scenario the Standby address for all interfaces appear as 0.0.0.0. The failover interface that I am using is Ethernet0/3. See attached output which as the following obtained from a console session:
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...