Networking Cheat Sheet

Limitting NIC Auto-Negotiation

Cap Auto-Negotiation at 10 Mbps
sudo ethtool -s [NIC] autoneg on advertise 0x002
Cap Auto-Negotiation at 100 Mbps
sudo ethtool -s [NIC] autoneg on advertise 0x008
Cap Auto-Negotiation at 1000 Mbps
sudo ethtool -s [NIC] autoneg on advertise 0x3F
Revision #14
Created 2025-02-28 08:43:08 UTC by Tomáš Havlas
Updated 2026-09-04 08:19:04 UTC by Tomáš Havlas