2018-03-21 13:50:25 +01:00
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---
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title: Howto Ethtool
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categories: sysadmin network
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...
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2016-12-29 11:25:39 +01:00
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2018-03-21 13:50:25 +01:00
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* Manpage : <https://manpages.debian.org/stretch/ethtool/ethtool.8.en.html>
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2016-12-29 11:25:39 +01:00
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2018-03-21 13:50:25 +01:00
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ethtool est un outil permettant de voir et contrôler les paramètres d'une carte réseau.
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2016-12-29 11:25:39 +01:00
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2018-03-21 13:50:25 +01:00
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## Installation
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2016-12-29 11:25:39 +01:00
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~~~
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2018-03-21 13:50:25 +01:00
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# apt install ethtool
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2016-12-29 11:25:39 +01:00
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2018-03-21 13:50:25 +01:00
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# ethtool --version
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ethtool version 4.8
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2016-12-29 11:25:39 +01:00
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~~~
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2018-03-21 13:50:25 +01:00
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## Utilisation
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2016-12-29 11:25:39 +01:00
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2018-03-21 13:50:25 +01:00
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### Consulter l'état d'une interface
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2016-12-29 11:25:39 +01:00
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~~~
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2018-03-21 13:50:25 +01:00
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# ethtool eth0
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Settings for eth0:
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Supported ports: [ TP MII ]
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Supported link modes: 10baseT/Half 10baseT/Full
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100baseT/Half 100baseT/Full
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1000baseT/Half 1000baseT/Full
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Supported pause frame use: No
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Supports auto-negotiation: Yes
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Advertised link modes: 10baseT/Half 10baseT/Full
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100baseT/Half 100baseT/Full
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1000baseT/Half 1000baseT/Full
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Advertised pause frame use: Symmetric Receive-only
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Advertised auto-negotiation: Yes
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Link partner advertised link modes: 10baseT/Half 10baseT/Full
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100baseT/Half 100baseT/Full
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Link partner advertised pause frame use: Symmetric
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Link partner advertised auto-negotiation: Yes
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Speed: 100Mb/s
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Duplex: Full
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Port: MII
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PHYAD: 0
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Transceiver: internal
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Auto-negotiation: on
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Supports Wake-on: pumbg
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Wake-on: g
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Current message level: 0x00000033 (51)
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drv probe ifdown ifup
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Link detected: yes
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~~~
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### Changer son état
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Par exemple, configurer la vitesse à 10Mb/s, le duplex half, et désactiver l'auto-négotiation :
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~~~
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# ethtool -s eth0 speed 10 duplex half autoneg off
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2016-12-29 11:25:39 +01:00
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~~~
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2018-03-21 14:22:10 +01:00
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Pour changer l'adresse mac :
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~~~
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# ethtool -s eth0 phyad 01:23:45:67:89:0a
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~~~
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