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--- linux_wiki:ethtool [2016/03/18 23:21]
billdozor [Ethtool]
+++ linux_wiki:ethtool [2019/05/25 23:50]
@@ Line 1: / Line 1: @@
-====== 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 thought you are manually specifying speed and duplex.
-----