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Proceedings Paper

Scalable IP switching based on optical interconnect
Author(s): Zhixiang Luo; Mingcui Cao; Erwu Liu
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Paper Abstract

IP traffic on the Internet and enterprise networks has been growing exponentially in the last several years, and much attention is being focused on the use of IP multicast for real-time multimedia applications. The current soft and general-purpose CPU-based routers face great stress since they have great latency and low forwarding speeds. Based on the ASICs, layer 2 switching provides high-speed packet forwarding. Integrating high-speed of Layer 2 switching with the flexibility of Layer 3 routing, Layer 3 switching (IP switching) has been put forward in order to avoid the performance bottleneck associated with Layer 3 forwarding. In this paper, we present a prototype system of a scalable IP switching based on scalable ATM switching fabric and optical interconnect. The IP switching system mainly consists of the input/output interface unit, scalable ATM switching fabric and IP control component. Optical interconnects between the input fan-out stage and the interconnect stage, also the interconnect stage and the output concentration stage provide high-speed data paths. And the interconnect stage is composed of 16 X 16 CMOS-SEED ATM switching modules. With 64 ports of OC-12 interface, the maximum throughput of the prototype system is about 20 million packets per second (MPPS) for 256 bytes average packet length, and the packet loss ratio is less than 10e-9. Benefiting from the scalable architecture and the optical interconnect, this IP switching system can easily scale to very large network size.

Paper Details

Date Published: 9 October 2000
PDF: 5 pages
Proc. SPIE 4225, Optical Interconnects for Telecommunication and Data Communications, (9 October 2000); doi: 10.1117/12.402729
Show Author Affiliations
Zhixiang Luo, Huazhong Univ. of Science and Technology (China)
Mingcui Cao, Huazhong Univ. of Science and Technology (China)
Erwu Liu, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 4225:
Optical Interconnects for Telecommunication and Data Communications
Xiaomin Ren; Suning Tang, Editor(s)

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