Provided by: Ericsson Research
The authors apply the concept of centralized control to the MPLS access/aggregation network segment of service provider networks. They describe a numerical model to capture the scale and scope of the access/aggregation network and explain the corresponding scalability issues. They compare this numerical model to the experimental results obtained on a test-bed with OpenFlow 1.1 compatible central controller and forwarding elements. They show that the central controller implementation they have mostly matches the performance requirements of the access/aggregation networks for different scenarios.