I have two routers(R1 and R2) connecting my core site to a remote(R3 and R4). R1 and R3 have (2) Data T1's connecting to each other whereas R2 and R4 only have a single. GLBP worked great when I only had a single T1 connecting R1+2 to R3+4. When we added the third T1, I changed to weighting using R1/R3 having 200 (low 145 upper 165) and R2/R4 having 100 (lower 85 upper 95).
Is there a better way to share the load across the link or am I configuring GLBP wrong?