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Give Me Liberty or Give Me Eth

May 18, 2010, 17:32 (0 Talkback[s])
(Other stories by Ken Hess)

"Do you think you have a network bottleneck that's somehow related to your NIC's speed or other settings? If so, ethtool might be the utility that will save the day and many painful conversations. Ethtool is a privileged user only (root), powerful system tool that allows you to query and change settings for your system's ethernet cards. Using it, you can change almost every aspect of a supported card; from the basic to the esoteric.

"The Basics

"If ethtool didn't ship with your distribution, pick it up at: Ethtool's Sourceforge Site. Whether it comes installed on your distribution or you have to install it from source, you'll find ethtool a valuable new tool and will soon wonder how you lived without it. You must have root or sudo access to install and use ethtool, since it alters a system component's settings.

"You can alter the speed, duplex modes, autonegotiation, wake on LAN (WoL) options and perform tests to name a few of the things you can do with ethtool."

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