I'm having trouble wrapping my head around the concept of BGP weight and neighbor weight.
I have two local routers, A and B both connected to a single LAN. They connect to a cloud via a 50Mb line and a 45Mb line. The routers on the other end of the line, call them A1 and B1, are out of my control.
At a remote site I have a router C, which connects to the cloud via a T1 to router C1, also out of my control.
If I add weight to router A, when C tries to send a packet to the LAN, will it always prefer router A, as long as the line isn't down? Or do I need to tell C what path to take?