Auto fallback

[Srinivas N]

Dear Friends,

I have a 2 ISP links with different IP pools for one of my site (office) and those IPS links are given by using switches (2950).

I have 2800 router, which is having 2ports and I need to config auto fallfack,

My doubt is 2800 router will support auto fallback if i install one more lanport for 2800.

And plz help me how to config auto falback and which router will support for the same.        

Thanks & Regards,
Srinivas. N.