NCP>SHOW KNOWN NODES SUMMARY
          This command displays node summary information for all  known
          nodes.
      NCP>SET NODE TEST CIRCUIT DMC-0
      NCP>SHOW LOOP NODES
          The first command establishes a loop node name (TEST) for the
          associated circuit DMC-0.  The second command displays loop node
          status information for all loop nodes established by the  SET
          NODE command.