Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 23,
  • Issue 10,
  • pp. 2854-
  • (2005)

Traffic-Based Reconfiguration for Logical Topologies in Large-Scale WDM Optical Networks

Not Accessible

Your library or personal account may give you access

Abstract

Wavelength-division multiplexing (WDM) technology has emerged as a promising technology for backbone networks. The optical layer based on WDM technology provides optical routing services to the upper layers such as the packet-switching layer and the time-division multiplexing (TDM) layer over the generalized multiprotocol label-switching (GMPLS) paradigm. The set of all-optical communication channels (lightpaths) in the optical layer defines the logical topology for the upper layer applications. Since the traffic demand of upper layer applications fluctuates from time to time, it is required to reconfigure the underlying logical topology in the optical layer accordingly. However, the reconfiguration for the logical topology is reluctantly disruptive to the network since some lightpaths should be torn down and some traffic has to be buffered or rerouted during the reconfiguration process. Therefore, it needs to have an efficient transition method to shift the current logical topology to the new one so as to minimize the effect of the reconfiguration on the upper layer traffic. This paper proposes several heuristic algorithms that move the current logical topology efficiently to the given target logical topology in large-scale wavelength-routed optical networks. In the proposed algorithms, the performance improvement/degradation of data transmission [transmission delay or distance between a source-destination (s-d) pair] caused by a new lightpath is considered as benefit for establishing the new lightpath. The proposed algorithms construct the new logical topology starting from a lightpath with the largest benefit to the user traffic. Simulation experiments have been performed to evaluate the proposed algorithms in comparison with existing algorithms in a National Science Foundation Network (NSFNET)-like network model with 16 nodes and 25 links. The results show that the proposed algorithms yield much better performance (shorter average packet hot distance) than previous algorithms mostly with comparable computation time.

© 2005 IEEE

PDF Article
More Like This
Lightpath Reconfiguration in WDM Networks

Fernando Solano and Michał Pióro
J. Opt. Commun. Netw. 2(12) 1010-1021 (2010)

Virtual Topology Reconfiguration in Optical Networks by Means of Cognition: Evaluation and Experimental Validation [Invited]

Natalia Fernández, Ramón J. Durán Barroso, Domenico Siracusa, Antonio Francescon, Ignacio de Miguel, Elio Salvadori, Juan Carlos Aguado, and Rubén M. Lorenzo
J. Opt. Commun. Netw. 7(1) A162-A173 (2015)

Clustering Methods for Hierarchical Traffic Grooming in Large-Scale Mesh WDM Networks

Bensong Chen, George N. Rouskas, and Rudra Dutta
J. Opt. Commun. Netw. 2(8) 502-514 (2010)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved