Is it worth creating multiple contexts just for the sake of getting active/active failover?
We are implementing two new ASA 5520's in our network and I would like to use active/active failover since it helps balance the load. But we just need 4 interfaces (1 in, 1 out, 2 dmz). I knwo that to use lan-based failover I would have to give up one of the eth interfaces and hence create sub interfaces for the second DMZ. Our network doesn't require multiple contexts at all but we would sure like to active/active failover. Can somebody put some light on this design issue..
It depends. If the site being protected is critical, then failover will help keep the services up. PIX 6.3 and later supports VLAN. I believe ASA will also support VLANs. If you are connecting the interfaces on a switch, you can considering VLANs.
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...