Channelized reserved services architecture for guaranteed QoS

Fredrik Hanell; Per Lembre

doi:10.1117/12.434348

27 July 2001 Channelized reserved services architecture for guaranteed QoS

Fredrik Hanell, Per Lembre

Proceedings Volume 4524, Quality of Service over Next-Generation Data Networks; (2001) https://doi.org/10.1117/12.434348
Event: ITCom 2001: International Symposium on the Convergence of IT and Communications, 2001, Denver, CO, United States

Abstract

This paper discusses Channelized Reserved Services (CRS), an IP-based optical architecture based on a channel abstraction, which implements a thin link layer between IP and fiber. The channelized link layer provides critical functions missing in IP--quality of service (QoS) mechanisms, bandwidth management, and redundancy. The channelized reserved services (CRS) architecture strengthens the competitive position of service providers by leveraging the optical layer to provide services on-demand. CRS is IP centric in that it is optimized to carry IP traffic. The channelized link layer includes functions not handled by IP such as QoS mechanisms, bandwidth management and protection switching. Global addressing and routing are handled by IP. CRS scales with advances in optical transport technologies due to its distributed architecture, which enables simple upgrading of the forwarding capacity of a network without necessarily replacing routers or upgrading the fiber infrastructure. Further, a spatial reuse mechanism can provide high utilization of the available transmission capacity. CRS supports high service availability in that it is engineering with restoration features such as automatic and fast protection switching.

Citation Download Citation

Fredrik Hanell and Per Lembre "Channelized reserved services architecture for guaranteed QoS", Proc. SPIE 4524, Quality of Service over Next-Generation Data Networks, (27 July 2001); https://doi.org/10.1117/12.434348

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Chromium

Switching

Channel projecting optics

Network architectures

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Dense wavelength division multiplexing

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