The bandwidth explosion ushered in by the popularity of the Internet has spurred the recent acceleration in the development and deployment of equipment supporting packet-based broadband services. This, coupled with the widespread deployment of wavelength-division multiplexing (WDM) – based optical transport systems in the core network to satisfy the corresponding increase in capacity demand, has led network designers to reconsider traditional approaches to provisioning, traffic engineering, and network restoration.

Provisioning: In today’s network for high bandwidth services, time is the critical resource that service providers optimize. Time constraints are particularly acute for provisioning end-to-end high-speed broadband services, where provisioning times are often measured in weeks or months and the opportunity costs of delayed revenue recognition and unserved customers are huge. Rapid technologic advances in low-cost, high-capacity optical transport systems have only exacerbated the end-to-end provisioning challenge as carriers install a wide range of point solutions to meet explosive new service demands. There is an emerging consensus that rapid end-to-end provisioning of broadband services over optical transport networks is essential.

Traffic Engineering: Rapid growth and increasing requirements for service quality, reliability, and efficiency have made traffic engineering an essential consideration in the design and operation of Internet Protocol ...

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