I've got a small network of 7 computers with the following components:
Cable Modem: Motorola Surfboard SB4200 (less than 3 months old)
D-Link Router (w/ wireless activated): DIR655
Netgear Prosafe 24 Port 10/100 Smart Switch FS726T
When I connect any of the computers (all running XP or Windows 7) directly to the Cable Modem, I can get a 10mb connection.
When I connect the Cable Modem to the Router (internet port), and then connect the router to the switch, and the computers to the switch, the speed is cut to 2mb.
I'm using www.speedtest.net
to test speed.
I've tried another switch which is known to be good and got the same problem. I've tried restarting the router (but non resetting it because the settings are a little complicated). I've also tried resetting the switch and restarting the modem. I also know that we were getting 10mb connections on all comoputers with the exact same router and switch some time ago (probably 6 months ago). I've also called the ISP but because the speed of the modem connected directly to any computer is good, they say the problem must be something other than their service (which seems logical).
Is the router the likely suspect? Unfortunately, I don't have another router to test that. Any suggestions would be greatly appreciated!