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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 26 — Dec. 12, 2011
  • pp: B611–B620

Dynamic virtual link mesh topology aggregation in multi-domain translucent WSON with hierarchical-PCE

Ramon Casellas, Ricardo Martínez, Raül Muñoz, Lei Liu, Takehiro Tsuritani, Itsuro Morita, and Munefumi Tsurusawa  »View Author Affiliations


Optics Express, Vol. 19, Issue 26, pp. B611-B620 (2011)
http://dx.doi.org/10.1364/OE.19.00B611


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Abstract

We present a lab-trial of the designed and implemented path computation architecture for multi-domain translucent wavelength switched optical networks (WSON), using hierarchical Path Computation Elements (H-PCE). The approach is based on the dynamic aggregation of the domain topologies, represented as a virtual link meshes at a higher level, in order to perform dynamic domain sequence selection. We detail the extended path computation procedures, involving both domain selections considering inter domain links and segment expansions which are impairment-aware, along with the proposed control plane protocol extensions. We validate the approach with the overall performance of the end to end path computation latency, highlighting the benefits of parallelization.

© 2011 OSA

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(060.4251) Fiber optics and optical communications : Networks, assignment and routing algorithms

ToC Category:
Backbone and Core Networks

History
Original Manuscript: September 27, 2011
Revised Manuscript: November 10, 2011
Manuscript Accepted: November 14, 2011
Published: December 1, 2011

Virtual Issues
European Conference on Optical Communication 2011 (2011) Optics Express

Citation
Ramon Casellas, Ricardo Martínez, Raül Muñoz, Lei Liu, Takehiro Tsuritani, Itsuro Morita, and Munefumi Tsurusawa, "Dynamic virtual link mesh topology aggregation in multi-domain translucent WSON with hierarchical-PCE," Opt. Express 19, B611-B620 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-26-B611


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References

  1. A. Farrel, J. P. Vasseur, and J. Ash, “A path computation element (PCE)-based architecture,” IETF RFC 4655 (2006), http://tools.ietf.org/html/rfc4655 .
  2. J. P. Vasseur, R. Zhang, N. Bitar, and J. L. Le Roux, “A BRPC procedure to compute shortest constrained inter-domain TE label switched path,” IETF RFC 5441 (2009), http://tools.ietf.org/html/rfc5441 .
  3. D. King, A. Farrel, Q. Zhao, and F. Zhang, “The application of the PCE architecture to the determination of a sequence of domains in MPLS and GMPLS,” Internet-Draft, draft-king-pce-hierarchy-fwk (work in progress), http://tools.ietf.org/html/draft-king-pce-hierarchy-fwk-06 .
  4. R. Casellas, R. Muñoz, and R. Martínez, “Lab trial of multi-domain path computation in GMPLS controlled WSON using a hierarchical PCE,” in Optical Fiber Communication Conference and Exposition and National Fiber Optic Engineers Conference (OFC/NFOEC 2011), Technical Digest (CD) (Optical Society of America, 2011), paper OThI5, http://www.opticsinfobase.org/abstract.cfm?URI=OFC-2011-OThI5 .
  5. R. Martinez, R. Casellas, R. Muñoz, and T. Tsuritani, “Experimental translucent-oriented routing for dynamic lightpath provisioning in GMPLS-enabled wavelength switched optical networks,” J. Lightwave Technol.28(8), 1241–1255 (2010). [CrossRef]
  6. J. P. Vasseur and J. L. Le Roux, eds., “Path computation element (PCE) communication protocol (PCEP),” IETF RFC 5440 (2009), http://tools.ietf.org/html/rfc5440 .
  7. F. Zhang, Q. Zhao, O. González de Dios, R. Casellas, and D. King, “Extensions to path computation element communication protocol for hierarchical PCE,” Internet-Draft, draft-zhang-pce-hierarchy-extensions-00 (work in progress), http://tools.ietf.org/html/draft-zhang-pce-hierarchy-extensions-00 .
  8. M. Chen, R. Zhang, and X. Duan, “OSPF extensions in support of inter-autonomous system (AS) MPLS and GMPLS traffic engineering,” IETF RFC 5392 (2009), http://tools.ietf.org/html/rfc5392 .
  9. R. Muñoz, R. Martinez, and R. Casellas, “Challenges for GMPLS lightpath provisioning in transparent optical networks: Wavelength constraints in routing and signalling,” IEEE Commun. Mag.47(8), 26–34 (2009). [CrossRef]
  10. CTTC Optical Networking Area GMPLS Control Plane Emulator wiki, http://wikiona.cttc.es/ona/index.php/GMPLS_Control_Plane_Emulator_with_PCE .

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