Chapter 10 - Summary, Conclusions, and Generic Traffic Engineering and QoS Optimization Requirements

Abstract

This concluding chapter summarizes the results of studies presented in this book, and based on the results of these studies, operational experience, and established practice, a generic traffic engineering and quality of service optimization (GTQO) protocol is described for network evolution to internet protocol (IP)-based, multiprotocol label switching/ general multiprotocol label switching (MPLS/GMPLS) enabled technologies. The GTQO requirements and capabilities then form the basis for standards extensions, protocol development, and implementation of GTQO methods in packet-based, integrated voice/data dynamic routing networks. IP/MPLS/GMPLS standards extensions needed to accommodate the GTQO protocol requirements and capabilities are summarized. The chapter concludes that event-dependent-routing (EDR) path selection is preferred to state-dependent routing (SDR) path selection, aggregated per-virtual networks (VNET) bandwidth allocation is preferred to per-flow bandwidth allocation, GMPLS-based dynamic transport routing provides greater network reliability, throughput, revenue, and capital savings, and discrete event flow optimization (DEFO) design models are extremely flexible and successful in the design of complex routing algorithms and as a basis for network capacity design methods.