P4-KBR: A Key-Based Routing System for P4-Programmable Networks

Software-defined networking (SDN) architecture has provided well-known advantages in terms of network programmability, initially offering a standard, open, and vendor-agnostic interface (e.g., OpenFlow) to instruct the forwarding behavior of network devices from different vendors. However, in the last few years, data plane programmability has emerged as a promising approach to extend the network management allowing the definition and programming of customized and non-standardized protocols, as well as specific packet processing pipelines. In this paper, we propose an in-network key-based routing protocol called P4-KBR, in which end-points (hosts, contents or services) are identified by virtual identifiers (keys) instead of IP addresses, and where P4 network elements are programmed to be able to route the packets adequately. The proposal was implemented and evaluated using bmv2 P4 switches, verifying how data plane programmability offers a powerful tool to overcome continuing challenges that appear in SDN networks.

Future SDN-Based Network Architectures

The goal of this chapter is to provide a clear view of SDN, its origin, and its possible future. This chapter starts by taking a step backwards and looks at SDN in a historic perspective by visiting the history of network programmability and identifies how it helped pave the way and shape SDN. This historic journey will provide a general context of SDN and put SDN into perspective. Then the authors show the current view of SDN as defined by standard development organizations (SDOs), provide a sense of SDN's malleability, explore SDN interactions with different networking architectures, and finally, provide a vision of a possible SDN future.

Multiparty Call Control at the Network Edge

Network programmability is a key feature of fifth generation (5G) system which, in combination with cloud-based services, can support many use cases, including mission critical and healthcare communications. Programmability enables flexibility in customization of service connectivity. Multi-access Edge Computing (MEC) services and applications are enablers for network programmability. In this paper, MEC capabilities for programmability of multiparty multimedia call control at the network edge are studied. Multiparty video calls are one of the key applications of 5G, and are efficient way to exchange ideas, knowledge, expertise, information, and so on. The paper presents an approach to design MEC Application Programming Interfaces (APIs) which enable third party applications to create multiparty multimedia sessions and dynamically manage session participations. The API functionality is described by required information and message flows. The paper specifies the proposed MEC API with data model. Feasibility study includes modelling and formal validation of multiparty session state models supported by the network and mobile edge application. The latency injected by the API is evaluated by emulation.

Improving Security through Software Defined Networking (SDN): AN SDN based Model

In this era of virtualization & cloud computing, software defined networking has created a lots of buzz and has shown a great innovation through network programmability towards the better future networks. In this paper the rich concept of the SDN has been compared with the traditional networks based on the fundamental models. This paper evaluates the current security status, and states what can be done to improve it through SDN. In this work an SDN based security approach has been taken into consideration with advanced analysis on security aspects which shows how the overall security of the network can be enhanced with SDN. Mininet which is an SDN emulator has been utilized to perform various operations for implementation, testing and analysis. The proposed Security model based on SDN analytics has been presented with implementation and promising research directions. This work can be beneficial for researches as well as network engineers in the area of SDN who want to secure and scale their network through the flexibility in SDN