Two FRAME-RELAY with ISDN backup

[malfonsi]

I've a cisco 2500 connected through two frame-relay pvc to a cisco 3640.

I've a isdn connection also available between the two sites.

I want to utilize both the frame-relay pvc for load-sharing and implement a backup solution with isdn in the case the two pvc go down.

I'm running eigrp between the two sites.

If I had a 2600 instead of the 2500,

I'd have implemented multilink frame-relay with backup interface or floating static route and dialer configuration, but I've not money to purchase a 2600.

Any ideas for my issue?

Thanks a lot,

Maurizio

[p.krane]

Hi,

I find from the Feature navigator that the 17XX series routers support this feature from IOS version 12.2(8)YN release. You can think of this product which might be a cheaper solution.

[malfonsi]

Very thanks!

It's a good solution.

Merry Christmas!

Maurizio