We are about to update our network equipment and I am considering which equipment we need at the core. I'm looking for your thoughts on whether the Cisco Catalyst 3750-E can handle being at the core of a network. If anyone is currently using the 3750-E's, I'd like to hear from you. Currently, we use Catalyst 6500's at the core and distribution layers (routing and aggregation) and 3750's at the access layer (wiring closets). What do I stand to lose if I go with the 3750-E's. We really aren't using the full capability of the 6500's now. But we do maintain 10Gig connections between the 6500's. I figure we can have a high-availability design if I split the distribution layer and the core layer and get separate equipment for each. Replace the 6500's with 3750-E's for the core and still maintain the 10Gig links. I could also use the Catalyst 3750G-12S at the distribution layer. Ultimately, I figure I could save a bundle without losing anything. What do you guys think?