We currently have a similar setup, except our's is between a 2620 and a Nokia IP120 VPN Concentrator. Our primary connection is frame-relay off the 2620 and we use VRRP tracking to failover to the VPN connection dynamically if the frame connection is lost. Below are the relevant configs from the 2620 (authentication is used but not sure if it is MD5 offhand).
We tested with no issues by shutting down both the LAN interface on the router where VRRP is running, shutting down the serial interface that is being tracked, and by powering off the router. We are tracking the line protocol in VRRP, but there are a number of other options you can track as well. Both failover and fallback were extermely quick (didn't benchmark it, but seemed about the same as we see with HSRP on our router network that is setup pretty similar.
The link below gives the options for tracking, also I'm not sure of the exact release but I don't think VRRP is supported on the routers until 12.3 code.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
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In this session you can learn more about Layer 3 multicast and the best
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provides an overview of basic multicast, the best security practices for
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