Working on a designfor Interconnecting two sites and providing a DR solution at the same time. What I propose to do is basically announce two /24 blocks of IP space from each site using BGP to two separate providers. The two sites will have an iBGP link between them and will trade routes with each other. The idea would be that if a connection or router goes down at site A for example, inbound traffic destined for site A;s networks will start to reroute over through site B and vice versa. I have included a diagram that should illustrate what I am trying to do. Would like to see if anyone could comment and point out any glaring deficiencies inherent in this design. The diagram shows a single DS3 between the two sites but there will be two for redundancy. Another idea was to have an MPLS connecting the two sites and running iBGP over that. I am not totally sure that can be done or if it can how. Also would like to see if anyone could maybe propose a better idea for how to achieve this. As always thanks for your time netpros.
I have this problem too.