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Accepted
altman
Asked: 2012-06-09 00:38:37 +0800 CST

debian set eth0 autoneg off speed 1000 duplex full: Invalid argument

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I use debian for my things,but when i config speed 1000 and duplex full the error occur

the exactly command i use: ethtool -s eth0 autoneg off speed 1000 duplex full

  Cannot set new settings: Invalid argument
         not setting speed
         not setting duplex
         not setting autoneg
  Cannot set new settings: Invalid argument
         not setting speed
         not setting duplex
         not setting autoneg

And this is my eth0 information.

   Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full 
                        100baseT/Half 100baseT/Full 
                        1000baseT/Full 
     Supported pause frame use: No
     Supports auto-negotiation: Yes
     Advertised link modes:  10baseT/Half 10baseT/Full 
                        100baseT/Half 100baseT/Full 
                        1000baseT/Full 
     Advertised pause frame use: No
     Advertised auto-negotiation: Yes
     Speed: 100Mb/s
     Duplex: Full
     Port: Twisted Pair
     PHYAD: 1
     Transceiver: internal
     Auto-negotiation: on
     MDI-X: Unknown
     Supports Wake-on: g
     Wake-on: d
     Link detected: yes


      driver: bnx2
      version: 2.1.11
      firmware-version: bc 3.5.12 ipms 1.6.0
      bus-info: 0000:04:00.0
      supports-statistics: yes
      supports-test: yes
      supports-eeprom-access: yes
      supports-register-dump: yes
      supports-priv-flags: no

Could any one tell me which is the wrong place?

debian linux-networking ethtool

2 Answers

  1. Autonegotiation is a requirement for using 1000BASE-T according to Section 28D.5 of IEEE 802.3-2002 specification, so you cannot disable autonegotiation with 1000BASE-T.

    Try -

    sudo ethtool -s eth0 speed 1000 duplex full autoneg on

    • 11
  2. Best Answer

    Did you try,

    sudo ethtool -s eth0 speed 1000 duplex full autoneg off

    but I support Zoredache's comment, you should probably not be forcing the link speed, and unless it doesn't work without it, you should leave the machine set to autoneg, and ensure the network port is set to the right speed.

    • 1