A method and network device for managing a multi-homed network are provided. The integrated circuit and the photoelectric element are bonded respectively to the base seat and the transparent substrate. As a result, all Outer Joins, whether left or right, and all Exception Joins, whether left or right, can be removed from the query plan before performing optimizations such as predicate movement, GROUP BY movement, ORDER BY movement, and Join enumeration. A hitch angle position indicator is shown on the display and visually relates a current hitch angle position to the hitch angle position limit.