We have two geographically separated datacenter. Our primary data center has a vpn headend device that many external organization connects to (IPsec S2S vpn). We would like to set up DR vpn headend device in our backup data center. Now the problem is we would like to do that without changing any thing on the remote end (no change for the external organization, transparent failover). Is there any way to achieve this?
I have this problem too.