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Scientific Programming
Volume 2016, Article ID 1938312, 8 pages
Research Article

Bulk Restoration for SDN-Based Transport Network

1State Key Lab of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
2School of Physical Science and Technology, Anshan Normal University, Anshan 114007, China

Received 6 January 2016; Revised 6 July 2016; Accepted 25 July 2016

Academic Editor: Basilio B. Fraguela

Copyright © 2016 Yang Zhao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We propose a bulk restoration scheme for software defined networking- (SDN-) based transport network. To enhance the network survivability and improve the throughput, we allow disrupted flows to be recovered synchronously in dynamic order. In addition backup paths are scheduled globally by applying the principles of load balance. We model the bulk restoration problem using a mixed integer linear programming (MILP) formulation. Then, a heuristic algorithm is devised. The proposed algorithm is verified by simulation and the results are analyzed comparing with sequential restoration schemes.