MY LAN SLOW

[Osunkiyesi]

I work in an ISP/Telecommunication Firm. I have a network that is running at full duplex, 100mbps with about 25 systems with speed all in the range of Pentium(111) 733 - 1000mhz. This network is connected through a Cisco switch, Cisco Router, Optic Fibre Multiplexer, INX world Telecoms Lab switch,With a couple of servers running on Windows 2000 Server Operating System and clients running on Windows 2000 Professional.My Internet Satelite has a speed of 576kbps.
The Problem is that the systems loads internet pages slowly(except the server),The individual systems also loads programms very slowly and most times it end up hanging, Also, Communicating amongst the computer in the local intranet is very slow.
PLEASE what could be the cause?
NB: The network cabling is done with a CAT 5 UTP cable.

 

[rjs]

Could be anything. I would start with the switches and speed settings. Incorrect autonegotiation of full vs. half duplex is a common problem. Set all the ports on the switches to half duplex and set the NICs in all the workstations & servers to half duplex.