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WAN redundancy with a T1 as primary and VPN as secondary.

I have 2 locations that are connected with a T1 using 3640's. These locations used to be connected with VPN using a Cisco 520 at the head end and a 506 at the satellite location.

We went with a dedicated T1 but I would like to use the VPN for failover and I want it to be dynamic. I tried using floating statics at our Nortel L3 core but that did not work when the T1 went down in the cloud but still showed up as up/up in the routers.

I was thinking of using a routing protocol on the WAN and then a static with a higher cost that pointed to the Cisco Pix if the T1 went down. I need to know 1) will this work and 2) what is the best routing protocol? Currently I am using static routing. I was leaning towards EIGRP but I am being pushed to use OSPF. I think that OSPF is a bit overkill for only 2 locations. Note: the ip schema is 10.100.x.x at location 1 and 10.130.x.x at location 2.

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Les Moore

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mmahaney

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Yep...You are right. I have accomplished it with floating static routes but that doesn't take into consideration if the line protocol stays up while there is a issue with the T1 in the cloud and not at the pop.

I did not think about the core and the pix being able to play together in a OSPF solution.

Thanks for your thoughts.

Mike M