[CentOS] Re: link speed

Thu Sep 18 21:37:04 UTC 2008
Scott Silva <ssilva at sgvwater.com>

on 9-18-2008 12:37 PM Craig White spake the following:
> On Thu, 2008-09-18 at 15:05 -0400, John Kordash wrote:
>>> Craig White írta:
>>>> Is there a command line way to tell me whether a ethernet
>>> connection is
>>>> 100 BaseT or Gigabit Ethernet?
>>> mii-tool
>> My experience with mii-tool on CentOS4 and 5 is that it won't show link speed above 100 even if it is.  If the OP is trying to differentiate 100 vs. 1000, then I would suggest using ethtool instead.
> ----
> yup...mii-tool didn't report what I wanted...
> # mii-tool
> eth0: negotiated 100baseTx-FD flow-control, link ok
> eth1: negotiated 100baseTx-FD flow-control, link ok
> but ethtool did...
mii-tool was written before such links existed.

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