How to disable EEE feature on the nic on RHEL7-8/Centos7-8

Leave a Comment / centos 7, centos 8, Troubleshoot / By explinux

Table of Contents

Environment

Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
CentOS 7
CentOS 8

Issue

Would like to disable the (Energy Efficient Ethernet) EEE feature of the NIC.

Resolution

To disable EEE use the ethtool command. In the example below, EEE is disabled on eth0:

# ethtool --set-eee eth0 eee off

To make this change persist across reboots, please add the ETHTOOL_OPTS parameter to the interface’s interface configuration file found in the /etc/sysconfig/network-scripts/ directory. For example:

# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
HWADDR=00:21:97:2E:EE:77
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=dhcp
ETHTOOL_OPTS="--set-eee ${DEVICE} eee off"

Diagnostic Steps

The ethtool command option –show-eee will display the current status of EEE:

# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# ethtool --show-eee eth0
EEE Settings for eth0:
    EEE status: enabled - inactive
    Tx LPI: 0 (us)
    Supported EEE link modes:  100baseT/Full 
                               1000baseT/Full 
    Advertised EEE link modes:  100baseT/Full 
                                1000baseT/Full 
    Link partner advertised EEE link modes:  Not reported

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