I'm putting in 3 fast ethernet links between 2 buildings. For redundancy purposes I have 2 switches\routers on either side. 4509R1 ----> 6509C1 and 4509R2 ----> 6509C2. The 6509's are running IOS not CatOS.
2 of the fast Ethernet ports are on the R1-C1 connection and the last is on the R2-C2 pair.
I've considered Etherchannel on the R1-C1 and going layer2 back to C1 and letting C1 & C2 handle GLBP and routing. I'm not sure this is the most efficient design to maximize my bandwidth utilization while maintaining redundancy.
Anyone have any suggestions?