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Auto-negotiate 1000Mbps

Found this over here in the comments so thought I’d share this tip here:

There is way to “fix” the speed on a gig-ethernet NIC while complying with the standard, based on the last paragraph of the article mentioned above by Shawn (http://standards.ieee.org/reading/ieee/interp/IEEE802.3af-2003interp-6.pdf):

# ethtool -s eth0 speed 1000 duplex full autoneg on

The NIC keeps the auto-negotiation but only advertises 1000mbps. It works fine.

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Categories: Linux
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