As we know the Cisco PIX/ASA firewalls have the stateful failover feature.Which allow the active the vpn ,http sessions being up during the failover.
I am interested in whether Cisco Routers have the similar feature? . Can i keep the active vpn, nat sessions on different router through the clustering or somehow redundancy.
p.s. Please don't offer the HSRP ;). It is just for redundancy of L3 connections.I need the stateful redundancy