Software-defined network support for transport resilience

Paper type: 
Journal Paper
Joao Taveira Araujo, Raul Landa, Richard G. Clegg and George Pavlou
IEEE/IFIP Network Operations and Management Symposium, 2014
Existing methods for traffic resilience at the network and transport layers typically work in isolation, often resorting to inference in fault detection and recovery respectively. This both duplicates functionality across layers, eroding efficiency, and leads to protracted recovery cycles, affecting responsiveness. Such misalignment is particularly at odds with the unprecedented concentration of traffic in data-centers, in which network and hosts are managed in unison. This paper advocates instead a cross-layer approach to traffic resilience. The proposed architecture, INFLEX, builds on the abstractions provided by software-defined networking (SDN) to maintain multiple virtual forwarding planes which the network assigns to flows. In case of path failure, transport protocols proactively request to switch plane in a manner which is unilaterally deployable by an edge domain, providing scalable end-to-end forwarding path resilience.
This paper is a development of the earlier ideas in PREFLEX -- In this case the focus is resilience within a data centre. In particular resilience at the network layer. If several paths are available to a destination the system known as INFLEX can support fail over between paths seamlessly using OpenFlow. In this case the system is tested using Openvswitch.
booktitle={IEEE/IFIP Network Operations and Management Symposium},
title={Software-defined network support for transport resilience},
author={Jo\~{a}o Ara\'{u} jo Taveira and  Raul Landa and Richard G. Clegg and George Pavlou}