The classical network models are still dominant due to economic, cultural and ideological reasons. Nevertheless network technology evolves gradually in order to meet growing requirements of network service customization and emergence of network virtualization. New proposals, mostly coming from software engineering area, attempt to improve or replace old internet that has hindered the rapid development of network protocols and architectures. The breakthrough will really happen if concepts and tools from software engineering can be adopted selectively and combined with network seamlessly instead of easily copying from computer world.

In 2014, the SDN is not a conceptual revolution but rather an attempt in technical improvement:

a) the operators are capable to realize network deployment with low-cost switches/routers, and shift their intelligence from local devices to centralized “powerful computing node” that can be built on commodity server. But technology is not yet mature, because we do not know yet how to ensure network resilience in these circumstances.

b) the cloud/data centers aim to achieve network services over transport networks of the Internet using SDN, such as Google B4 project. These networks are not yet stabilized but the SDN offers them tunable flexibility with little overhead.

The limitations of resilience of SDN networks need to be resolved before its large-scale deployment. In all cases, there are no plans to change the end-to-end protocols (UNI, user network interface), which constitute large amount of the Internet RFCs. The consensus is to structure new internal network interfaces (NNI, network-to-network interface), and to clarify and standardize the role of SDN in providing network functions. That is why the router manufacturers must be deeply involved in this process.

This presentation covers the spatiotemporal virtualization of network and how to design and implement a real secure SDN + NFV, which is a breakthrough in current models.

 

Keywords:

Internet architecture, SDN, NFV, OpenFlow, network model, software model, design pattern, architectural style, markup language, SDN security.

 

–Former Dean of the Department of Computer Science and Networks, at Telecom ParisTech (Ecole Nationale Supérieure des Télécommunications, www.telecom‐paristech.fr) in Paris, where he lectures in security and future networks.

– His research is oriented towards security of large Information Systems and Networks and architecture of communication systems (SDN, Grids, Security of the Future Internet, Trust and Advanced Networks).

– In the IST Integrated Project of FP6, he is Key Researcher of the Secoqc Integrated

Project (Development of a Global Network for Secure Communication based on Quantum Cryptography), responsible of the Network Architecture.

– In the FET of the FP6, he was the Security & Dependability Task Group Leader of

the Beyond the Horizon Project.

– In Italy, he is a scientific member of the international Think tank on telecommunications ThinkTel (www.thinktel.org).

– He has several patents in security (firewall, watermarking and protecting CD ROM).

– He published recently two books “La sécurité à l’ère numérique” (édition Hermès

Lavoisier) and “Le téléphone de demain” (édition Le Pommier).

 

• Areas of Interest

– The future Internet, SDN

– The security, dependability, trust and privacy of the future Internet