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Piggybacking network switches (3comm switches, data problem)

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Catachresis

Technical User
Jul 20, 2004
5
US
we have a situation where we have two 3comm 4400 switches (24 port each) piggybacked to each other and riding the same IP address (giving us 48 ports on 1 address), and we are wiring a 3rd switch into the system to connect 4 computers from our network and two ISDN lines (and an analog fax line). We now have a problem where the computers (which were previously on the network in another location) can't find thier network user profiles, yet logging in as an administrator shows that everything is up. The 3rd switch we have is a 3comm 1100 which doesn't require a static IP address (and is in essence just another 24 ports on the existing address for the two switches in the closet), but the connection between the 1100 and the 4400 is only running at half duplex (I think they are knocked down to 10meg on a 1gig network). We suspect that the inability for users to find thier profiles is due to large amount of packet loss over the connection, and some of us theorize that possibly swapping the 1100 switch for a 4400 with it's own seperate IP address would solve some of this problem because of the distance separating the two switches(at least as far as the duplexing.) Of course all this is theories and we really have just a hazy idea of what the real problem might be. Are there any IT's out there with experience in this type of problem?
 
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