ABSTRACT
Demand for Internet service is doubling every year, and many kinds of services such as voice, data, leased lines, and video—all of which are associated with multimedia services—are being carried by IP protocols. The problem is how to carry Internet protocol (IP) protocols that need Quality of Service (QoS) support functions. IP over wavelength division multiplexing (WDM) or IP over XXX over WDM are potential problem solvers. This chapter presents a typical approach to integrating IP and asynchronous transfer mode (ATM). IP long-life sessions are cut-through at the ATM switches. A prototype system with 2.4 Gb/s throughput has been fabricated and is described. The results of many performance experiments are also reported. The cell-switch-router approach is very important for high-performance QoS guaranteed IP transport networks. IP traffic can be transferred through an ATM VC connection using the network level cut-through approach. Emerging real-time and multimedia applications in IP over ATM are becoming an indispensable part of the networking world.
