Add Alias IP address to AIX server ethernet interface using chdev command

 Hello All,

Today topic is Alias IP configuration on ethernet interface.

Scenario 1:

Alias IP configuration on en0 using chdev with permanent/temporary.

Command for assigning alias IP on en0 interface permanently is like following.

#chdev -l en0 -a alias4=192.168.0.100,255.255.255.0

This will add IP address 192.168.0.100 as Alias IP to en0 interface. AIX admin can verify this using command

#ifconfig -a 

Chdev command permanently set IP to interface en0. this alias IP address remain on AIX interface after reboot also.

    Let's consider scenario where AIX admin wanted to set IP address for temporary purpose, he can use following command 

#ifconfig en0 192.168.1.3 netmask 255.255.255.0 alias

Scenario 2:

If AIX admin wanted to remove that alias IP, how he can remove that??

Answer:

Remove a permanently added alias from an interface

chdev -l en0 -a delalias4=192.168.1.3,255.255.255.0

Another useful command for adding default route on AIX server

#route add default 192.168.1.1

Here I am sharing small script to check whether AIX server ethernet interface are pingable or not

============================================================

for i in `ifconfig -a |grep -i inet |awk '{print $2}'`

do

echo $i

ping -c 10  $i

done

Above script will ping to IP address assigned to interface, if they up and active will get ping response.

Thanks!!!!

:)