This is not a real life situation, it's a small part of a report I have to do for college. Basically I have to plan a full network for an 8 storey college building. I will place serveral networking closets (IDFs) to provide full coverage. Because of the size of the building, i'm guessing a fibre backbone will have to be put in place, this is where i get confused about the equipment I need. Core level - Redundant Routers with GBIC interfaces Distribution level - Fibre Switches? Access level- Ethernet Switches with GBIC interfaces I need to have a good redundant setup in place. I've looked into the fibre switches and I have calculated I will have at least 20 fibre runs to the closets (also need room for expansion). I can only seem to find some kind of HP fibre switch that has 16 empty GBIC slots, which runs for £5,000 plus all the GBIC cards. Can someone give me a hand to tell me if i'm going the right way and what equipment i should be checking out?