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.
Thanks for your help