At my I have core switch (for discussion consider one switch). There are two wan rotuers connected to core switch. One router is connected to SP 1 and other router to SP 2. Both these CE routers are running BGP with service provider and static routing towards LAN (core switch).
Now the core switch need to do ECMP using reliable static routing. I know a dynamic routing is the solution but I have reservations. We have decided to go for IP SLA based load balancing from core to WAN routers. The question here is if one of the Spoke location SP 1 link is down, the switch should not forward traffic for that LAN to the affected edge router ?
what is the possible option. Is it an iBGP between two routers ?