How does a network function with mixed jumbo frame/non-jumbo frame clients? I have two SMC gigabit jumbo frame supported switches and most of my computers, 6 or so, all support jumbo frames. However I also have a few clients that do not support jumbo frames and are running on standard 100Mbs network connections. Do all of these computers just autonegotiate MTU size with each other or will jumbo frames just be disabled for everyone because of those few non-supported clients?