Gigabit NIC showing as a 100mb connection

stuartmanton · 19 Feb 2010 at 11:25

I have a Netgear GS605 gigabit switch. Currently there are two machines connected to it. One is my existing desktop and the other a new machine I have build to run WHS.

The WHS is showing a 1000Mbps connection but my existing desktop only shows 100Mbps.

The motherboard is a Gigabyte 965p-DS4 with onboard gigabit network. This shows as a Marvell Yukon 88E8053 Gigabit Ethernet Controller in the device manager.

I have installed the latest Marvell drivers, tried different cables etc but can't seem to get it connect at 1000mb. The speed is just report on the LAN connection status as 100.0Mbps and shows with an orange light on the switch. The port for the WHS is green.

Copying files to the WHS is painfully slow. < 2mb/sec.

Any ideas?

Sin_Chase · 19 Feb 2010 at 11:33

Is the switch completely 1Gb or on limited ports only?

Also, have you checked the Speed setting on the NICs properties? You could try force 1000 and see what it makes of it.

stuartmanton · 19 Feb 2010 at 11:35

Its gigabit on all ports. I did try forcing the 1000Mbps but it just lost the connection completely.

HarryPainful · 19 Feb 2010 at 11:45

Have you tried a different cable?

stuartmanton · 19 Feb 2010 at 11:53

I did. I even tried the one which was achieving 1Gb from the WHS to the switch.

BlueMhz · 19 Feb 2010 at 12:16

Could try a BIOS update as suggested here:

http://social.technet.microsoft.com...e/thread/b79a20d9-705c-4058-9cf9-652d4f9e9561

stuartmanton · 19 Feb 2010 at 12:26

I will try to update the BIOS and see if that helps

stuartmanton · 19 Feb 2010 at 12:46

The BIOS is at F12 which is the latest version.

jbloggs · 19 Feb 2010 at 15:30

I had this same problem with the Netgear GS605, removing the power cable for a few seconds and replacing it usually fixed it, but after a time that didn't, so simply bought an HP ProCurve 1800 8 port switch (no more dropping to fast eternet speeds)...the 1400 (8 port) would be cheaper as it is unmanaged...so the actual problem lay with the Netgear GS605.