How Do I Check Auto Negotiation in Linux?
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How do I turn on auto negotiation in Linux?

Change NIC Parameter Using ethtool Option -s autoneg

The above ethtool eth0 output displays that the “Auto-negotiation” parameter is in enabled state. You can disable this using autoneg option in the ethtool as shown below.

How do I turn off auto negotiation in Linux?

The tty1 Console login prompt appears. Log in as root. The command prompt appears. At the command prompt type ethtool -s ethx autoneg off speed 1000 duplex full, where ethx is the name of your network device, and then press <Enter>.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

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