You might need to verify that the logical partition (LPAR) configuration is correct.
If you are having problems communicating among partitions over a virtual Ethernet, you should verify that your logical partitions are configured correctly. The partitions must be configured to be able to communicate with one another. If the partition configuration is wrong, then your TCP/IP configuration will not work even if you configured TCP/IP correctly.
To work with
LPAR, you must have *SERVICE special authority. See the chapter on user profiles
in iSeries™ Security
Reference 
for more information about this type of authority.