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?

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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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