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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 3, Iss. 1 — Jan. 1, 2011
  • pp: 66–76

Reliable Multi-Bit-Rate VPN Provisioning for Multipoint Carrier-Grade Ethernet Services Over Mixed-Line-Rate WDM Optical Networks

Marwan Batayneh, Dominic Schupke, Marco Hoffmann, Andreas Kirstaedter, and Biswanath Mukherjee  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 3, Issue 1, pp. 66-76 (2011)
http://dx.doi.org/10.1364/JOCN.3.000066


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Abstract

Ethernet’s success in local-area networks (LANs) is fueling the efforts to extend its reach to cover metro and long-haul networks. A key enabler for using Ethernet in the carrier’s network is its ability to efficiently support multipoint-to-multipoint (MP2MP) services. MP2MP service is the core underlying structure to enable standard Ethernet services such as Ethernet virtual private networks (E-VPNs). Since most of the research, standardization, and development have focused on designing protection architectures for point-to-point (P2P) Ethernet connections, protecting E-VPN services is an important research problem. Among the various transport methods for realizing carrier Ethernet, the wavelength-division multiplexing (WDM) optical network is a strong candidate. Wavelength channel rates are increasing from 10 to 40 Gbits∕s and even 100 Gbits∕s, and they can also coexist in the same fiber. We study the problem of cost-efficient provisioning of multi-bit-rate (1∕10∕40∕100 Gbits∕s) self-protected E-VPN demands over a carrier-grade Ethernet network employing WDM optical network (Ethernet over WDM) with mixed line rates (MLRs). We study two algorithms for self-protected E-VPN provisioning. The first algorithm reforms the original E-VPN topology and increases the provisioning rates (10∕40∕100 Gbits∕s) of the E-VPN edge demands to create excess capacity that can be used for protection (E-VPN reformation). The second algorithm routes the E-VPN edge demands using the lowest available rate (10∕40∕100 Gbits∕s) and establishes backup capacity for protecting the E-VPN (no E-VPN reformation). Our algorithms are tested on a 17-node German national network topology. The results show that using E-VPN reformation achieves significant cost reduction and significant improvement in the network’s performance by reducing the traffic-blocking ratio.

© 2011 Optical Society of America

OCIS Codes
(060.4251) Fiber optics and optical communications : Networks, assignment and routing algorithms
(060.4257) Fiber optics and optical communications : Networks, network survivability
(060.4258) Fiber optics and optical communications : Networks, network topology

ToC Category:
Research Papers

History
Original Manuscript: May 11, 2010
Revised Manuscript: September 23, 2010
Manuscript Accepted: October 12, 2010
Published: December 23, 2010

Citation
Marwan Batayneh, Dominic Schupke, Marco Hoffmann, Andreas Kirstaedter, and Biswanath Mukherjee, "Reliable Multi-Bit-Rate VPN Provisioning for Multipoint Carrier-Grade Ethernet Services Over Mixed-Line-Rate WDM Optical Networks," J. Opt. Commun. Netw. 3, 66-76 (2011)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-3-1-66


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References

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