Abstract
The evolution of the Internet and fiber-optic technologies has created new opportunities in terms of availability of different network services. The increasing demand for capacity, combined with strong reliability requirements, defines new challenges in the area of network management and design. Today, several users share the limited network resources, which may lead to frequent link congestions in communication networks. Therefore, we propose two effective solutions to respond to link congestions in centrally managed flow-oriented IP networks, such as software-defined networks. We verify their performance through simulation using a real backbone network topology and conclude that as long as enough resources are available in the network, the presented algorithms have the potential to reduce the number of fully loaded links in the network.
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