DSL, T1, GRE, EIGRP Failover

Jul 05, 2005 1 Replies
M

I have a main site and 5 remote site. 5 sites connected through T1 lines, and using GRE though PIX as a backup if t1 line fails. It works great, the only thing that I have left is to backup my DSL line using T1 line. How do I do this. I know that I can setup rtr, and track command to send ICMP reqeuests to my DSL router. But then what, if my default route ip route 0.0.0.0 0.0.0.0 192.168.5.254 points to PIX firewall, how do I change that, to work with rtr, track and route-map. I know it is easy to setup access-list to determine the type of traffic, but how to make an access-list out of 0.0.0.0 0.0.0.0



Please help



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V

Maybe I'm missing something in your question, but backing up the DSL ISP link once you've set up rtr should be a trivial matter of making the current static default route track the rtr status and having a second floating static default route pointing to the other end of your T1. Of course, that assumes that the other end of the T1 has the appropriate default route.

You do need to consider route redistribution carefully, as it will be very easy to set up routing loops, consider if both ends of a T1 lose their local default route and start sending Internet bound traffic down the same T1...bye bye bandwidth!

Good luck and have fun!

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