We have recently installed an NT SBS 4.5 server (SP4) at a customer site. The server is a PIII 500 with 256MB RAM. All LAN drivers, etc are up to date and there are no physical problems with the LAN. The IP Addressing scheme is 192.168.1.x and the problem is TCPIP performance is dreadful. Starting a server based app on a client PC takes minutes instead of seconds during which time there is no LAN traffic or apparent activity on either the client or the server. We tried using IPX instead of TCPIP and performance improved massively but we have to use TCPIP instead of IPX due to other systems/applications. We have heard that changing the IP address scheme from the default 10.0.0.x can lead to this problem with NT SBS server but can't find anything to prove this.
Any ideas anyone?