We are consolidating offices and we have bought a second catalyst 4506. We've assumed that we can simply connect the GBIC uplink ports of the Supervisor II-Plus modules to each other. We'll want to span some VLANs but not all. I'm on the hook to make this work and I've found documentation that almost describes what I think I need to do. Any advice, direction, or words of encouragement will be appreciated. Thanks!