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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editor: Richard A. Linke
  • Vol. 5, Iss. 5 — May. 1, 2006
  • pp: 320–339

Selective randomized load balancing and mesh networks with changing demands

F. B. Shepherd and P. J. Winzer  »View Author Affiliations


Journal of Optical Networking, Vol. 5, Issue 5, pp. 320-339 (2006)
http://dx.doi.org/10.1364/JON.5.000320


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Abstract

We consider the problem of building cost-effective networks that are robust to dynamic changes in demand patterns. We compare several architectures using demand-oblivious routing strategies. Traditional approaches include single-hop architectures based on a (static or dynamic) circuit-switched core infrastructure and multihop (packet-switched) architectures based on point-to-point circuits in the core. To address demand uncertainty, we seek minimum cost networks that can carry the class of hose demand matrices. Apart from shortest-path routing, Valiant's randomized load balancing (RLB), and virtual private network (VPN) tree routing, we propose a third, highly attractive approach: selective randomized load balancing (SRLB). This is a blend of dual-hop hub routing and randomized load balancing that combines the advantages of both architectures in terms of network cost, delay, and delay jitter. In particular, we give empirical analyses for the cost (in terms of transport and switching equipment) for the discussed architectures, based on three representative carrier networks. Of these three networks, SRLB maintains the resilience properties of RLB while achieving significant cost reduction over all other architectures, including RLB and multihop Internet protocol/multiprotocol label switching (IP/MPLS) networks using VPN-tree routing.

© 2006 Optical Society of America

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks

ToC Category:
RESEARCH PAPERS

History
Original Manuscript: November 21, 2005
Revised Manuscript: March 6, 2006
Manuscript Accepted: March 8, 2006
Published: April 5, 2006

Citation
F. B. Shepherd and P. J. Winzer, "Selective randomized load balancing and mesh networks with changing demands," J. Opt. Netw. 5, 320-339 (2006)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jon-5-5-320


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