ethtool/nic question

[Darrell Michaud]

I'm sure there's other advice out there but I'll throw in:

Don't change the linux broadcom or intel gig-E ethernet drivers from their
defaults without a specifically documented reason. They will autonegotiate
to 1000 when possible under normal circumstances.

Check your wiring, your switch, your switch's configuration first. My
personal experience is that GigE automatically dumbing down from 1000 to
100 has not been due to an configuration issue in the linux drivers.





bruce.labitt at autoliv.com wrote:
> What has your success been with ethtool?  I cannot determine if I have a
> software (ethtool) or hardware issue.
> I cannot set either ethernet adapter I have to 1 Gbit.  I have a Broadcom
> NetXtreme BCM5754 Gigabit Ethernet PCI express and a Realtek RTL-8169
> adapters in my box.  The Broadcom is integrated in the mobo.
>
> From google I know that people have had issues with the 8169's.  Some
> folks have trouble and others don't.
>
> My distro (still Sci Linux) have only version 5 of ethtools.  I just built
> version 6 of ethtools and it does not seem to make a difference.  I can
> supposedly set the speed and "it allows it", but querying the device
> results in the report of the speed not being set to 1000 Mbit.  The 1Gbit
> link light does not go on.  I cannot set either interface to 1Gbit, even
> with autoneg off.
>
> Any suggestions?  Buy another NIC?  Not really a problem - which one?  I
> was leaning towards intel, but I read of their firmware being able to
> brick itself.
>
> -Bruce
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