Q

I would like to know about installing VPN failover options in a network.

I would like to know about installing VPN failover options in a network. If we have two ISP links, we should be in a position to design our VPN in such a way that if one ISP link goes down, the VPN tunnels should be redirected to another ISP link. How can we achieve this with Cisco routers and firewalls?
What you're looking for is referred to as multi-homing or WAN redundancy with VPN failover. To learn more about redundancy and VPN failover, read these white papers by FatPipe, Networking Unlimited and Astrocom . Many Cisco routers support WAN link redundancy; for example, see these Cisco 1711/1712 security access routers.
This was first published in August 2004

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