Name
Title | ||
|---|---|---|
Architectural Options for the Next-Generation Networking Paradigm: Is Optical Internet the Answer? |
Abstract | ||
|---|---|---|
Recent advances in optical networking technologies are setting the foundation for the next-generation data-centric networking paradigm, an “Optical Internet”. This work addresses one of the most challenging issues facing today's service providers and data vendors; how will the SONET/SDH-based legacy infrastructure currently in place make a graceful transition to the next generation networking paradigm? A simplified, two-tiered architecture that requires two types of sub-systems will set the stage for a truly optical internet: service delivery platforms that enforce service policies; and transport platforms that intelligently deliver the necessary bandwidth to these service platforms. If IP can be mapped directly onto the WDM layer, some of the unnecessary network layers can be eliminated, opening up new possibilities for the potential of collapsing today's vertically layered network architecture into a horizontal model where all network elements work as peers to dynamically establish optical paths through the network. This paper presents a balanced view of the vision of the next-generation optical internet The work presented here builds on the IETF multi-protocol lambda switching (MPλS) initiative and addresses the implementation issues of the path selection component of the traffic-engineering problem in a hybrid IP-centric DWDM-based optical network. An overview of the methodologies and associated algorithms for dynamic lightpath computation is presented. Specifically, we show how the complex problem of real-time provisioning of optical channels can be simplified by using a simple dynamic constraint-based routing and wavelength assignment (RWA) algorithm that compute solutions to three sub-problems: (a) routing; (b) constrained-based shortest-route selection; (c) wavelength assignment. We present two different schemes for dynamic provisioning of the optical channels. The two schemes use the same dynamic lightpath computation approach proposed here, except that the third component, that is the wavelength assignment algorithm and its implementation, is different for each of the two schemes. |
Year | DOI | Venue |
|---|---|---|
2001 | 10.1023/A:1011475425915 | Photonic Network Communications |
Keywords | Field | DocType |
optical internet,IP/WDM,MPLS,real time provisioning,RWA | Next-generation network,Telecommunications,Multiprotocol Label Switching,Computer science,Computer network,Dynamic circuit network,Active networking,Service provider,Optical networking,The Internet,Synchronous optical networking | Journal |
Volume | Issue | ISSN |
3 | 1 | 1572-8188(Series Online ISSN)1387-974X(Series Print ISSN) |
Citations | PageRank | References |
3 | 0.46 | 5 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| M. A. Ali | 1 | 3 | 0.46 |
| Abdallah Shami | 2 | 845 | 88.93 |
| C. Assi | 3 | 350 | 32.41 |
| Yinghua Ye | 4 | 361 | 33.50 |
| Russ Kurtz | 5 | 3 | 0.46 |