we have a 24 port Adtrans switch (100 mbps) which pretty old (7 years) has almost filled up and two 3com 24 port switches which are also almost full. We plan to replace these and are looking for more ports .. because we plan to expand a lil more .. so maybe another 50 extra ports ... I want some recommendations for switches ... I would like to know if layer 3 or layer 2 switches are better, gigabit or fibre (what will I need to change for fibre connections), how many ports maximum to switches support and also I read about bay stackable .. can they be stackable if they are on different floors of the building. Your advice is greatly appreciated. You cna also point me to some good technical articles and willing to sp3nd time reading it. I just need a good place to start ... Im starting here. Thanks.