I am designing a network for a client and have a question regarding the design. They are a pretty small company and they currently have one Layer-3 3560G switch, I plan to get another and use a 2Gb etherchannel between them. Then I'll connect these core 3560G's to the access switches using a layer-2 trunk link.
My question is whether I use layer-2 or layer-3 communications between the 3560G's? If any experts can explain the pro's and con's of both of these then maybe that can help me make a decision. I was initially planning to use layer-3 routed links but after reading about spanning tree and PVST, I am now leaning more towards using a switched connection.
Of course, if you think that there is a better design I would be very happy to listen to your advice. Maybe to use layer-3 links to the access switches???
I have attached a diagram of what I plan to do.
Thanks a lot