During a training a student accidentally changed the duplex setting of the vmnic for the service console to fixed 1000Mbit full duplex. This isn’t so bad, if the vmnic wasn’t on a 100Mbit switch!
So I had to go to the service console to change the duplex setting back to auto.
I expected to use the esxcfg-vswif command. But with this command you cannot change the duplex setting. After some investigation I discovered to use normal Linux command like ethtool.
To see the current settings:
ethtool vmnic1
To change the settings to 1000Mbit full duplex:
ethtool -s vmnic1 autoneg off
ethtool -s vmnic 1 speed 1000 duplex full
To change it backup again to auto:
ethtool -s vmnic1 autoneg on
.
.
…and I would expect to complete this task with esxcfg-nics
Frank, I also meant esxcfg-nics, Sometimes something is right in your head but not on paper
Thanks