I have two cisco ASR 1002 routers. I also have 2 ISPs. I do not want to load balance between both ISPs, but I want to fail over to one if the primary ISP suffers a failure. One thing I don't want to have happen is, if our primary router fails we would then have to fall back to our secondary ISP. I would prefer to keep using ISP 1 on the secondary router.
The proposed diagram I have is atached. I am using a L2 connection to reach each ISP on both routers.