Abstract:

In this presentation, we will outline the GMPLS signaling and routing enhancements to support traffic engineering of wavelength routed networks. We consider GMPLS networks comprising of elements like OXCs, PXCs, DWDM gear, and OADMs; elements that are visible from a GMPLS control plane. We will discuss a couple of control plane architectures. We will also talk about the details of how the GMPLS routing protocols announce bandwidth, and give an overview on the extensions of IP routing concepts and constrained shortest path first algorithms to compute traffic-engineered lightpaths in optical networks. We then discuss, with examples, the use of the GMPLS signaling protocols, specifically label sets, to signal the traffic-engineered circuits and address the wavelength assignment issue.

Jonathan P. Lang received the B.S. degree in electrical engineering from the University of California, San Diego, and the M.S. and Ph.D. degrees in electrical engineering from the University of California, Santa Barbara. He is a Network Architect at Calient Networks, where he develops the company's network and routing architecture. He is actively involved in both the IETF standards body and the Optical Internetworking Forum. Before joining Calient, he worked for Whitetree, Inc., developing rate allocation algorithms for ATM. As a researcher and member of the Multidisciplinary Optical Switching Technology (MOST) Center at the University of California, Santa Barara, he was responsible for developing the switch architecture and networking protocols for an all-optical packet switch.