D-Link DXE-810T Manual page 6

2. Linux:
User can change link speed using the "ethtool" command, for example:
 Force 10G: "ethtool –s <ethxx> speed 10000 autoneg off"
 Force 5G: "ethtool –s <ethxx> speed 5000 autoneg off"
 Force 2.5G: "ethtool –s <ethxx> speed 2500 autoneg off"
 Force 1G: "ethtool –s <ethxx> speed 1000 autoneg off"
 Force 100M: "ethtool –s <ethxx> speed 100 autoneg off"
 Auto-Negotiation: "ethtool –s <ethxx> autoneg on"
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