Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Ethtool ====== **General Information** Display and set ethernet interface settings. **Checklist** * Distro(s): Enterprise Linux ---- ====== Display Settings ====== To display the settings of a network interface: <code bash> ethtool eth0 </code> ---- ====== Set Speed/Duplex ====== Set eth0 to 100 Mbps and full duplex <code bash> ethtool -s eth0 speed 100 duplex full autoneg off </code> ===== Permanent Settings ===== To make speed settings permanent, edit the network script at /etc/sysconfig/network-scripts/ifcfg-eth0 and append: For 100 Mbps <code bash> ETHTOOL_OPTS="speed 100 duplex full autoneg off" </code> \\ For 1000 Mbps (1 Gbps) <code bash> ETHTOOL_OPTS="speed 1000 duplex full autoneg on" </code> * **Note:** Gigabit requires autoneg to be on, even though you are manually specifying speed and duplex. ---- linux_wiki/ethtool.txt Last modified: 2019/05/25 23:50(external edit)