We have the following setup:
RTRA & RTRB located in site A both are OC48 connections.
RTRA connects to RTR1 in site B, then to internet
RTRB connects to RTR2 in site C, then site C connects to Site B and then to internet via RTR2.
Link from RTRA to RTR1 is saturated. We would like to load balance traffic using both RTRA & RTRB in site A. Would changing the cost on RTRA accomplish this? OSPF is the routing protocol and there is only 1 area, area 0.