I am trying to find a solution for our disaster recovery site. We have 13 sites that have VPN tunnles back to the main site with OSPF and GRE tunnels for routing. I need to make a separate mirror site of the main site (ip addresses, VLANS, etc). How can I failover the VPN sites to the disaster recovery site automatically using the GRE and OSPF network using the same IP address scheme?
The Stateless failover is used when the primary network edge platform fails, IPsec sessions can failover and reconnect to the backup network edge platform, thus minimizing connection downtime.