A Hybrid Approach for Providing Improved
Link Connectivity in SDN
Muthumanikandan Vanamoorthy1, Valliyammai
Chinnaiah1, and Harish Sekar2
1Department of Computer Technology, Madras Institute of Technology, Anna
University, India
2Endurance International Group, India
Abstract: Software-Defined Networking (SDN) is a unique approach to design and
build networks. The networks services can be better handled by administrators
with the abstraction that SDN provides. The problem of re-routing the packets
with minimum overhead in case of link failure is handled in this work.
Protection and restoration schemes have been used in the past to handle such
issues by giving more priority to minimal response time or controller overhead
based on the use case. A hybrid scheme has been proposed with per-link Bidirectional
forwarding mechanism to handle the failover. The proposed method makes sure
that the controller overhead does not impact the flow of packets, thereby
decreasing the overall response time, even with guaranteed network resiliency.
The computation of the next shortest backup path also guarantees that the
subsequent routing of packets always chooses the shortest path available. The
proposed method is compared with the traditional approaches and proven by
results to perform better with minimal response time.
Keywords: Open flow, SDN, link
failure, protection and restoration.
Received October 12, 2018;
accepted January 21, 2019
https://doi.org/10.34028/iajit/17/2/13