We have a proposed design as you see it in the attached diagram. We want to use GLBP between the two 6500's and each of them are in a separate physical site that is connected via single mode fiber. As you can see we have connected the 4948's, which are acting as Layer 2 distribution switches, using the fiber. The 6500's are each part of the GLBP setup.
Is this a bad way to set this up? What I am looking for is drawbacks or alternative setups using the same equipment.