Simple wavelength assignment protocol

Stephen Suryaputra; Joseph D. Touch; Joseph A. Bannister

doi:10.1117/12.402546

5 October 2000 Simple wavelength assignment protocol

Stephen Suryaputra, Joseph D. Touch, Joseph A. Bannister

Proceedings Volume 4213, Terabit Optical Networking: Architecture, Control, and Management Issues; (2000) https://doi.org/10.1117/12.402546
Event: Information Technologies 2000, 2000, Boston, MA, United States

Abstract

IP routers can be coupled with wavelength-selective optical cross- connects to support existing Internet infrastructure in a wavelength division multiplexing (WDM) optical network. Because optical wavelength routing is transparent to IP, packets can bypass traditional forwarding and pass directly through the optical cross-connect, resulting in very high throughput and low delay routing. This approach shares features with label switching, but wavelengths are much more scarce resource than labels. Because optical switches have larger switching times than electronic switches, and wavelength conversions are expensive, wavelength label swapping is not easily done. Wavelength label assignments must consider these limitations to be practical in an optical environment. The performance of an instance of this approach, called Packet over Wavelengths (POW) has been simulated and studied. A new signaling protocol, Simple Wavelength Assignment Protocol (SWAP) is devised to be POW signaling protocol. SWAP takes into account the optical device limitations, and is designed to minimize wavelength conversion, utilize wavelengths with the merging of flows, and reduce the reconfiguration of optical switches. SWAP, to our knowledge, is the first approach to combine signaling and wavelength assignment in an on- line protocol. This paper describes high level SWAP design challenges, decision, and overhead.

Citation Download Citation

Stephen Suryaputra, Joseph D. Touch, and Joseph A. Bannister "Simple wavelength assignment protocol", Proc. SPIE 4213, Terabit Optical Networking: Architecture, Control, and Management Issues, (5 October 2000); https://doi.org/10.1117/12.402546

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