An advanatge of FDDI over FastEthernet is that you can have a significantly larger MTU. This may or may not be a good thing depending on your traffic patterns and networking applications. There may be a slight speed benefit to FDDI in a "quite heavy streaming large (>4gb) ISO's" application where you would benefit from the lesser overhead in bigger packets.
Ethernet caps at 1500, I ferget what FDDI is but I think it's closer to 4k. If you're in a mixed media environment, you may have to lower the MTU on your FDDI gear anyways to 1500 negating any possible benefit there anyways. There's a few things I'd suggest you figure out first... Wether you are using single attach or dual attach adapters. Wether you're setting your network up in a Ring or Star/Tree topology. (You say you're going to lay fiber and call that "FDDI". FDDI is a networking protocol (ie PPP, Token Ring, ATM, Ethernet) not a physical cabling spec/designation like cat5. So, while I don't want to sound rude... I hope you know what equiptment you actually have :P I mean, is there a chance you just have a bunch of terminated fiber and atm or gigabit ethernet cards? :) ) FWIW, I havent worked with FDDI stuff in 5-7 years... so I could be entirely wrong. -Daved -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]