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Proceedings Paper

Channelized reserved services architecture for guaranteed QoS
Author(s): Fredrik Hanell; Per Lembre
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Paper 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.

Paper Details

Date Published: 27 July 2001
PDF: 11 pages
Proc. SPIE 4524, Quality of Service over Next-Generation Data Networks, (27 July 2001); doi: 10.1117/12.434348
Show Author Affiliations
Fredrik Hanell, Dynarc Inc. (United States)
Per Lembre, Dynarc Inc. (United States)

Published in SPIE Proceedings Vol. 4524:
Quality of Service over Next-Generation Data Networks
Mohammed Atiquzzaman; Mahbub Hassan, Editor(s)

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