Proceedings ArticleDOI
The Segment Routing Architecture
Clarence Filsfils,Nainar Nagendra Kumar,Carlos M. Pignataro,Juan Camilo Cardona,Pierre Francois +4 more
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TLDR
Segment Routing is presented, a new network architecture aimed at filling this gap, driven by use-cases defined by network operators, and its related ongoing standardization efforts are described.Abstract:
Network operators anticipate the offering of an increasing variety of cloud-based services with stringent Service Level Agreements. Technologies currently supporting IP networks however lack the flexibility and scalability properties to realize such evolution. In this article, we present Segment Routing (SR), a new network architecture aimed at filling this gap, driven by use-cases defined by network operators. SR implements the source routing and tunneling paradigms, letting nodes steer packets over paths using a sequence of instructions (segments) placed in the packet header. As such, SR allows the implementation of routing policies without per-flow entries at intermediate routers. This paper introduces the SR architecture, describes its related ongoing standardization efforts, and reviews the main use-cases envisioned by network operators.read more
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Journal ArticleDOI
Segment Routing: A Comprehensive Survey of Research Activities, Standardization Efforts, and Implementation Results
Pier Luigi Ventre,Stefano Salsano,Marco Polverini,Antonio Cianfrani,Ahmed Abdelsalam,Clarence Filsfils,Pablo Camarillo,Francois Clad +7 more
TL;DR: In this paper, the authors present a tutorial and a comprehensive survey on Segment Routing (SR) technology, analyzing standardization efforts, patents, research activities and implementation results.
Journal ArticleDOI
The Internet of Space Things/CubeSats: A ubiquitous cyber-physical system for the connected world
Ian F. Akyildiz,Ahan Kak +1 more
TL;DR: A novel cyber-physical system spanning ground, air, and space, called the Internet of Space Things/CubeSats (IoST) is introduced, envisioned as a means to achieving global connectivity at low costs, which is further bolstered by the use of Software-Defined Networking and Network Function Virtualization.
Journal ArticleDOI
QoE Management of Multimedia Streaming Services in Future Networks: A Tutorial and Survey
Alcardo Alex Barakabitze,Nabajeet Barman,Arslan Ahmad,Saman Zadtootaghaj,Lingfen Sun,Maria G. Martini,Luigi Atzori +6 more
TL;DR: In this article, the authors provide a comprehensive survey of QoE management solutions in current and future networks, and present a list of identified future QOE management challenges regarding emerging multimedia applications, network management and orchestration.
Journal ArticleDOI
Comprehensive Survey on T-SDN: Software-Defined Networking for Transport Networks
Rodolfo Alvizu,Guido Maier,Navin Kukreja,Achille Pattavina,Roberto Morro,Alessandro Capello,C. Cavazzoni +6 more
TL;DR: This survey guides the reader through a fascinating technological adventure that provides an organic analysis of the T-SDN development and evolution considering contributions from: academic research, standardization bodies, industrial development, open source projects, and alliances among them.
Journal ArticleDOI
Network service orchestration standardization
Charalampos Rotsos,Daniel L. King,Arsham Farshad,Jamie Bird,Lyndon Fawcett,Nektarios Georgalas,Matthias Gunkel,Kohei Shiomoto,Aijun Wang,Andreas Mauthe,Nicholas Race,David Hutchison +11 more
TL;DR: This paper surveys existing standardization efforts for the orchestration - automation, coordination, and management - of complex set of network and function resources (both physical and virtual), and highlights the various enabling technologies, strengths and weaknesses, adoption challenges for operators, and areas where further research is required.
References
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IP Fast Reroute Framework
Mike Shand,Stewart Bryant +1 more
TL;DR: This document provides a framework for the development of IP fast- reroute mechanisms which provide protection against link or router failure by invoking locally determined repair paths.
Proceedings ArticleDOI
Research Directions in Network Service Chaining
Wolfgang John,Kostas Pentikousis,George Agapiou,Eduardo Jacob,Mario Kind,Antonio Manzalini,Fulvio Risso,Dimitri Staessens,Rebecca Steinert,Catalin Meirosu +9 more
TL;DR: This paper details prominent research challenges during the typical lifecycle of a network service chain in an operational telecommunications network, including service chain description, programming, deployment, and debugging, and summarizes the security considerations.
Proceedings ArticleDOI
A Declarative and Expressive Approach to Control Forwarding Paths in Carrier-Grade Networks
Renaud Hartert,Stefano Vissicchio,Pierre Schaus,Olivier Bonaventure,Clarence Filsfils,Thomas Telkamp,Pierre Francois +6 more
TL;DR: This work proposes a solution based on a two-layer architecture separating connectivity and optimization tasks; and a centralized optimizer called framework, which translates high-level goals expressed almost in natural language into compliant network configurations, which improves the state of the art.
Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures
Kireeti Kompella,George Swallow +1 more
TL;DR: This document describes a simple and efficient mechanism that can be used to detect data plane failures in Multi-Protocol Label Switching (MPLS) Label Switched Paths (LSPs).
Proceedings ArticleDOI
Optimized network traffic engineering using segment routing
TL;DR: This paper develops a traffic matrix oblivious algorithm for robust segment routing in the offline case and a competitive algorithm for online segment routing and shows that both these algorithms work well in practice.