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-   -   How to find out my NIC speed (10/100/1000) (https://www.linuxquestions.org/questions/linux-networking-3/how-to-find-out-my-nic-speed-10-100-1000-a-463567/)

fjkum 07-13-2006 03:29 AM
How to find out my NIC speed (10/100/1000)
 
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.


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