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ADSL/FRAME/ISDN Routing

We are looking into the idea of dropping our Frame-relay links and getting our small sites to use ADSL, with a backup of ISDN. What is the best way to configure the cisco routers?

1603 router is connected to a lan, ISDN, and at moment frame. if I put a firewall (non cisco) on the lan and connect this to an ADSL router (the firewall will talk to our main sites firewall and create a VPN tunnel-this I can do). The workstations will have a default route of the 1600 so how do I tell the cisco if the ADSL link is down, use the ISDN link? Is it a case of creating multiple ip route statements but putting a higher cost of the ISDN backup link, is there a better way or will this not work?

Thanks

1 REPLY
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Re: ADSL/FRAME/ISDN Routing

Hi Hardy,

Best way is to configure an ISDN backup and configure to trigger it if the keep alives does not come upto some time limit ,

that is when primary goes down....

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