We have a VPN between two routers Cisco 2811 with IPSEC and GRE. But now we want redundancy. I have been reading about Stateful Failover for IPsec and it sounds good, but I have a doubt, the routers have 12.4(15)T3 IOS Version, but 2811 can support this feature?
Can anybody help me, please. I can't find it on Cisco web.
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...