000056191 001__ 56191
000056191 005__ 20190426094919.0
000056191 0247_ $$2doi$$a10.4304/jnw.10.4.176-187
000056191 0248_ $$2sideral$$a91767
000056191 037__ $$aART-2015-91767
000056191 041__ $$aeng
000056191 100__ $$0(orcid)0000-0002-6977-6363$$aSaldana, Jose$$uUniversidad de Zaragoza
000056191 245__ $$aSmall-Packet Flows in Software Defined Networks: Traffic Profile Optimization
000056191 260__ $$c2015
000056191 5060_ $$aAccess copy available to the general public$$fUnrestricted
000056191 5203_ $$aThis paper proposes a method for optimizing bandwidth usage in Software Defined Networks (SDNs) based on OpenFlow. Flows of small packets presenting a high overhead, as the ones generated by emerging services, can be identified by the SDN controller, in order to remove header fields that are common to any packet in the flow, only during their way through the SDN. At the same time, several packets can be multiplexed together in the same frame, thus reducing the overall number of frames. The method can be useful for providing QoS while the packets are traversing the SDN. Four kinds of small-packet traffic flows are considered (VoIP, UDP and TCP-based online games, and ACKs from TCP flows). Both IPv4 and IPv6 are studied, and significant bandwidth savings (up to 68 % for IPv4 and 78 % for IPv6) can be obtained for the considered kinds of traffic. The optimization method is also applied to different public Internet traffic traces, and significant reductions in terms of packets per second are achieved. Results show that bandwidth consumption is also reduced, especially in those traces where the percentage of small packets is high. Regarding the effect on QoS, the additional delay can be kept very low (below 1 millisecond) when the throughput is high, but it may become significant for low- throughput scenarios. Thus, a trade-off between bandwidth saving and additional delay appears in those cases.
000056191 536__ $$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 644262-Wi-5$$9info:eu-repo/grantAgreement/EC/H2020/644262/EU/What to do With the Wi-Fi Wild West/Wi-5
000056191 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000056191 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000056191 700__ $$aHoz, David de
000056191 700__ $$0(orcid)0000-0002-5237-0447$$aFernandez-Navajas, Julián$$uUniversidad de Zaragoza
000056191 700__ $$0(orcid)0000-0003-4690-6089$$aRuiz-Mas, José$$uUniversidad de Zaragoza
000056191 700__ $$aPascual, Fernando
000056191 700__ $$aLopez, Diego R.
000056191 700__ $$aFlorez, David
000056191 700__ $$aCastell, J.A.
000056191 700__ $$aNuñez, M
000056191 7102_ $$15008$$2560$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Ingeniería Telemática
000056191 773__ $$g10, 4 (2015), 176-187$$pJ. netw.$$tJournal of networks$$x1796-2056
000056191 8564_ $$s615942$$uhttp://zaguan.unizar.es/record/56191/files/texto_completo.pdf$$yVersión publicada
000056191 8564_ $$s131325$$uhttp://zaguan.unizar.es/record/56191/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000056191 909CO $$ooai:zaguan.unizar.es:56191$$particulos$$pdriver
000056191 951__ $$a2019-04-26-09:28:53
000056191 980__ $$aARTICLE