Industry professional Kevin Liu demonstrates how to use the fiber bandwidth capacity by wavelength division multiplexing (WDM) and the universal connectivity offered by Internet protocol (IP) by integrating the two technologies and optimizing systems to take advantage of their strengths. He presents IP/WDM architectural and internetworking models, discusses network control and traffic engineering, and highlights issues specific to IP/WDM networks. Of likely interest to telecommunications and computer network engineers, as well as graduate students in control and traffic engineering.