Transport functions virtualization for wavelength division multiplexing (wdm)-based optical networks

Abstract

A method for virtualizing an optical network, comprising: abstracting optical resource information corresponding to resources within the optical network, constructing a plurality of candidate paths for one or more optical reachability graph (ORG) node pairs, determining whether the candidate paths are optical reachable paths, and creating an ORG link between each ORG node pair when at least one optical reachable path exists for the ORG node pair, wherein linking the ORG node pairs creates an ORG. In another embodiment, a computer program product comprising executable instructions when executed by a processor causes a node to perform the following: determine an optical network's optical-electrical-optical (OEO) conversion capability, partition a plurality of service sites into one or more electrical reachability graph (ERG) nodes, determine a grooming capability for each ERG node, and construct a plurality of electrical-layer reach paths between the ERG nodes to form an ERG.

Description

[0001] Cross References to Related Applications [0002] This application claims prior application priority to U.S. Provisional Patent Application No. 61 / 711011, filed October 8, 2012, by Wei Wei et al., entitled "System and Method for Transport Network Virtualization," which The content of the prior application is incorporated by reference into this text as if reproduced in its entirety. [0003] About Sponsored by the Federal Government [0004] Statement of Research or Development [0005] Not applicable. [0006] Refer to Microfiche Addendum [0007] Not applicable. Background technique [0008] As Internet traffic continues to grow dramatically, today's communications and data networks face many challenges in supporting and managing large amounts of Internet data. Specifically, modern optical networks have been facing the following demands: increasing the bandwidth of a single wavelength, enabling flexible connection requests, and providing real-time support for new ...

AI Technical Summary

Problems solved by technology

However, existing L2 and L3 virtualization approaches cannot guarantee deterministic latency, jitter, and resiliency for multiple circuit services because L2 and L3 switches inherently have relatively poor bandwidth isolation capabilities

In addition, current SDN development focuses on the virtualization of packet networks and does not provide virtualization of WDM transport networks

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