I currently have a 2821 router that i wish to add another T1 card to with anoter service provider. I am attaching equipment on the unused ethernet interface and wish this equipment to only use the second T1 interface. are route maps the way to go?
This link gives an example of configuring vrf lite that I believe is very close to what you would do;
If you were doing it on a router with mlppp the vrf would be associated with the multilink interface and not the individual serial interfaces. Layer 3 information is always associated with the multilink interface and not the individual physical interfaces that make up the multilink bundle.