Re: Programmatically get ethernet interface speed?

From: Donald Becker (
Date: Wed Jul 11 2001 - 20:38:23 EST

On Wed, 11 Jul 2001, Will wrote:

> Is there a (reasonable) way to programmatically get the speed of an
> ethernet interface? So far all I've been able to do is look at
> net_device.if_port from the kernel and try to deduce the speed (10 vs
> 100Mbit) from the tranciever setting. This works fine with 3c59x, but
> not with eepro100, and I suspect it doesn't work with lots of other
> drivers as well.

Most drivers support 'mii-diag'

A related program is 'mii-tool'.

Donald Becker
Scyld Computing Corporation
410 Severn Ave. Suite 210 Second Generation Beowulf Clusters
Annapolis MD 21403 410-990-9993

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