Make sure that the interface that you add to the group matches all the constraints to be in the group. For a list of the requirements of an IPMP group, see How to Plan an IPMP Group.
On the system with the IPMP group configuration, assume the Primary Administrator role or become superuser.
The Primary Administrator role includes the Primary Administrator profile. To create the role and assign the role to a user, see Chapter 2, Working With the Solaris Management Console (Tasks), in System Administration Guide: Basic Administration.
Add the IP interface to the IPMP group.
# ifconfig interface group group-name
The interface specified in interface becomes a member of IPMP group group-name.
To add the interface hme0 to the IPMP group itops0, you would type the following command:
# ifconfig hme0 group itops0 # ipmpstat -g GROUP GROUPNAME STATE FDT INTERFACES itops0 itops0 ok 10.00s subitops0 subitops1 hme0