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Back-up a frame relay line with dsl

Hi all,

we have an office that is linked to corporate through frame relay. At that office we also have a dsl line linked  to corporate by vpn. We need that when the frame is down all the traffic to be automatically redirected through the other line. How can we accomplish this in an automatic way?

Thanks.
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se_1581
Asked:
se_1581
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1 Solution
 
MarkDozierCommented:
setup default routes. give the frame relay the lower netric.
With higher metric the DSL will only be used when it becomes the lowest meyric
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se_1581Author Commented:
Can this be achieved on a sonicwall firewall?  We have now a static route that is routing the traffic for corporate through the frame.
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lrmooreCommented:
Do you have a cisco router at each site? If yes, then make this router's local IP the default gateway for the LAN, and put two default routes on it. One to the local sonicwall, one with higher metric to the WAN.
This way, if the WAN link drops, the specific route to corporate drops and all traffic goes through the VPN.

Example:
ip route 0.0.0.0 0.0.0.0 192.168.77.1 < = local sonicwall
ip route 0.0.0.0 0.0.0.0 10.100.200.2 200  <= WAN link backup default (optional) with metric of 200
ip route 10.0.0.0 255.0.0.0 10.100.200.2   <== corp network

Done.
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se_1581Author Commented:
I attached the present network configuration

Is this the best way to have it? If I added another static route to the branch vpn with a higher metric, once the frame is down, the traffic would go through vpn?


network.JPG
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