Today’s access, aggregation and core networks mostly have rigid control plane, which does not enable fast innovation and keeping up with the fast-changing user requirements. Instead of the overprovisioning and continuous extension of networking protocols, a new approach is needed for increasing network capacity and improving network resource utilization. Furthermore, fast and flexible creation of composite services on enormous carrier or enterprise networks would be a decent goal.
The notion of Service Function Chaining (SFC) returns to the focus of technological development in the area of network management and design. Researchers focus on exploiting the advantages of Network Function Virtualization (NFV) and Software Defined Networking (SDN) to bring SFC to a brand new level of fast and flexible, modern end-to-end service orchestration.
Many approaches have recently arisen to design and create a novel networking architecture to facilitate the modern demands towards telecommunication networks using the revisited notion of SFC. One of these project is UNIFY, which gathers researchers of the academic and industrial domains from all over Europe. The researchers of our university, and more specifically of our faculty have significant input to the results of UNIFY.
The core of SFC architecture is the orchestration algorithm, which has ultimate decision making responsibility over compute and networking resource reservation. There are many sophisticated solutions for this task with long running times, so those cannot be executed real-time for every new request arriving within a few seconds. There is a lack of very fast (meta)heuristic orchestration algorithms to deal with enormous amount of service request.
The goal of this work is to create and evaluate in detail novel approaches to designing, evaluating and fine-tuning of real-time customizable orchestration algorithms for carrier grade networks and to integrate the implemented algorithm to the evolving framework of the UNIFY architecture.