An alias port entity provides the means to define an alternate network
   address for this node, which is shared by other nodes in the same VMScluster.
   When the alias port entity is enabled, this node becomes an active member
   of the VMScluster alias it specifies.

   The first node in the VMScluster to create an Alias Port for a particular
   alias address causes that alias to be created. Subsequent nodes which
   create an Alias Port for the same alias establish connections ports to
   that alias. The alias becomes active when the first node enables its Alias
   Port for that alias.

   When a node enables an Alias Port, that node registers itself with other
   members of the alias.