How to find the world-wide name (WWN) of a fibre-channel card in IBM AIX

To find the world-wide name (WWN) or network address of a fibre-channel (FC) card in IBM AIX:

First find the name of your fibre-channel cards:

# lsdev -vp | grep fcs

Then get the WWN (for fcs0 in this example):

# lscfg -vp -l fcs0 | grep "Network Address" 

Example:

lscfg -vp -l fcs0 | grep "Network Address"