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Proceedings Paper

Routing and switching in optical networks: comparing the benefits of hybrid vs. router-only solutions
Author(s): Peter Chadwick; Yassi Moghaddam
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Paper Abstract

The public network is rapidly moving from being a voice-optimized network that carries data, to a data-optimized network that will carry multiple services with IP as the predominant traffic. One of the key issues confronting carriers is the balance between circuit switching and packet switching in the core of the network. With the emergence of fast IP switch/routers, it is becoming possible to directly connect all ports on DWDM equipment directly on the router vs. connecting the router to DWDM infrastructure through an optical cross-connect. Comparing the costs of circuit switching and packet switching in the core of the network, a hybrid of packet and circuit switching solution proves more cost-effective than the pure packet switching whenever the port cost of the IP router is more than twice the port cost of the optical cross- connect. Furthermore, to enable cost effective evolution toward the converged network, the next generation of switching equipment will need to accommodate astronomical growth, while providing carriers with more flexibility in network design.

Paper Details

Date Published: 5 October 2000
PDF: 6 pages
Proc. SPIE 4213, Terabit Optical Networking: Architecture, Control, and Management Issues, (5 October 2000); doi: 10.1117/12.402551
Show Author Affiliations
Peter Chadwick, Avici Systems, Inc. (United States)
Yassi Moghaddam, Avici Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 4213:
Terabit Optical Networking: Architecture, Control, and Management Issues
John M. Senior; Sudhir Dixit; Chunming Qiao, Editor(s)

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