94cobra: So basically, all my equipment works on everything but the Empeg. If I place the Cabletron in line with the Empeg. The Empeg is now seen on the network(static or dynamic.)

Well. I don't have any particularly bright answers. Other folks' earlier replies are probably closer to the mark -- a subtle layer 1/2 duplex/framing problem b/w Empeg and 3Com. In your shoes, I'd want to fight with the 3Com until I won and I'd keep it a 2-node static network while fighting with it for troubleshooting purposes (if you can't get it to work like that, then...). It's complete voodoo, but aside from swapping new cables and such, I'd even try a different network, say 192.168.1.0; this doesn't really seem like a layer 3 problem, and 192.168.0.0/255.255.255.0 should yield usable host addressing, but different vendors' equipment sometimes have funny ideas about what constitutes a "zero" network, and it's probably at least worth ruling that out.