Situation:imagine that all traffic from my network currently flows thru Site1 - 4507 then go to the C7206VXR -> GW.
As a backup, I could order a physical link between the Site2 going to a GW-2 (corporate). That way in case Site1 4507 or site1 physical connections are unavailable, I could have traffic flowing thru Site2 instead and reaching the Corporate network OK.
That said, my questions regarding BGP:
a) if I set site1-4507 on BGP AS#100, and then I make site2-4507 on AS#100;
b) then I install a new C7206VXR-2 connected to Site2 - 4507, similarly to what I have on Site1. Then this new C7206VXR-2 will be the Corporate BGP peer on AS#200. I also make C7206VXR on site1 on AS#200.
Does that make sense?
At that point I could use local-preference to control outbound traffic, correct?
Please let me know whether that approach makes sense.