what supervisor are you using on teh 4500's?

here is what I've found.This sample configuration (found in one of the articles elsewhere) was tested on both 3560's and 6500 however only worked on the 6500. Have not tested on latest releases of code. This conflicts with the earlier statement that ...

Here are the price differences: (additional iformation so you can make an educated decision)Cisco 3750-12S with Enhanced Image (11995)Cisco 3750-12S with Standard Multilayer Image (7995) - Standard image supports RIP and static routing.Cisco 3550-12G...

I forgot to mention that 3750 has higher switching capabilities and a bigger backbone.

Here is a link to 3750 switch presentation. 3750 would be a clear choice here but you have to understand that it uses a SPF connector rather than a GBIC. 3750 has layer 3 capabilities as well and is ready for IPv6 in hardware. Not much price differen...