Changing Ethernet Media speed for AIX

Its UNIX systemschanging Ethernet Media speed for AIX

First you need to find out the device name of your Ethernet card. It should is ent0 if the machine had only 1 Ethernet card. Otherwise, it may be a higher number.

You can determine the legal values for the media speed of the card by running the following command (where the value of the May is different if you have multiple Ethernet cards).

lsattr -R -l ent0 -a media_speed

If This command results in the following error-

lsattr: 0514-528 The "media_speed" attribute does not exist in the predefined device configuration database.

-then the Ethernet card is a 10Mbps card that would only have do 10mbps/half duplex

If you do have a 100Mbps card, the lsattr command would return something like this:

10_half_duplex10_full_duplex100_half_duplex100_full_duplexauto_negotiation

These is the media speeds the card would understand. To see the cards current media speed setting you can run

lsattr -EH -l ent0 -a media_speed

To change the media speed, run:

chdev -P -l ent0 -a media_speed=100_Half_Duplex

The value for can is any of the media_speed values listed by the lsattr -R command above. The change does don't take effect until you reboot the machine.

Changing Ethernet Media speed for AIX