2 Replies Latest reply on Feb 10, 2012 10:51 AM by cqx874

    How should I disable AutoNeg on 82576 controller and igb driver?




      We've got Oracle servers with 82576 controllers on board. We're trying to disable AutoNeg with ethtool:

      ethtool -s eth0 speed 1000 duplex full autoneg off


      As a result ethtool says:

      Settings for eth0:

              Supported ports: [ TP ]
              Supported link modes:   10baseT/Half 10baseT/Full
                                      100baseT/Half 100baseT/Full
              Supports auto-negotiation: Yes
              Advertised link modes:  1000baseT/Full
              Advertised auto-negotiation: Yes
              Speed: 1000Mb/s
              Duplex: Full
              Port: Twisted Pair
              PHYAD: 1
              Transceiver: internal
              Auto-negotiation: on
              Supports Wake-on: umbg
              Wake-on: g
              Current message level: 0x00000003 (3)
              Link detected: yes

      So AutoNeg is still on, but only 1000/FD is advertised.


      Can anyone explain me why AutoNeg is not disabled?

      If ethtool does not support igb completly is there any other way to disable AutoNeg?