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IPSEC L2L VPN over Dialer with SLA backup

Hi

I have a Cisco 1921 router with two ADSL WIC modules. The device is setup with a primary gateway via the first Dialer0 and then a secondary gateway with a higher cost on Dialer1. SLA tracking has also been configured on the primary route.

The router needs to provide a L2L IPSEC VPN to an ASA5510 that is capable of failover to the second Dialer/DSL circuit in the event that the first goes down.

What is the best practice for configuring the IPSEC VPN with redundancy?

On the ASA I can configure a secondary IP for the tunnel which is not a problem, but its the best way in which to setup the VPN on the 1921 so that it works over both Dialers. When using the Cisco Config Pro application it appears bind the tunnel to an adaptor and i cant seem to find a good example on the Cisco support site.

Any help much appreciated.

Dan

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