How to find out my NIC speed (10/100/1000)

fjkum · 07-13-2006, 03:29 AM

Hi,

Is there a utility that comes with my Linux RedHat that I can find out what is my NIC current speed (10/100/1000Mbps)?

TIA.

HappyTux · 07-13-2006, 11:29 AM

Quote:

Originally Posted by fjkum

Hi,

Is there a utility that comes with my Linux RedHat that I can find out what is my NIC current speed (10/100/1000Mbps)?

TIA.

ethtool perhaps if the NIC driver is supported by it.

GUIPenguin · 07-13-2006, 11:51 AM

Well, if you cant figure it out with software, You know your not running 1000 unless your connected to a gigabit network, and most network cards will have a little light indicating whether it is running at 10 or 100Mbps. you could check the back of the card (hardware level).

fjkum · 07-13-2006, 07:26 PM

Quote:

Originally Posted by HappyTux

ethtool perhaps if the NIC driver is supported by it.

Nope. The ethtool returns device not supported.

What other ways that I can determine the speed without checking the LED at the back of the card?

HappyTux · 07-13-2006, 09:47 PM

Quote:

Originally Posted by fjkum

Nope. The ethtool returns device not supported.

What other ways that I can determine the speed without checking the LED at the back of the card?

Well you can always try something like this.

Code:

>$ dmesg |grep eth0
eth0: VIA Networking Velocity Family Gigabit Ethernet Adapter
eth0: Ethernet Address: 00:50:8D:D1:28:6B
eth0: Link autonegation speed 100M bps full duplex

Or course changing the eth0 to eth1 or such if different even eth* for any ethernet card detected.