This document has some AIX networking tips and commands.

• List all network interface cards on the AIX server :  The "lsdev" command displays devices in the system and their characteristics. Use the below command to just list the NIC.

bash-3.00# lsdev | grep -i ether | grep -i Available
en0        Available 03-08         Standard Ethernet Network Interface
bash-3.00#

• Check network interface speed and duplex settings :  "entstat" command shows the details of the interface.

bash-3.00# entstat -d ent0 | grep 'Media Speed Running:'
Media Speed Running: 100 Mbps Full Duplex
bash-3.00#