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Survey on Routing in Data Centers: Insights and Future Directions

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Survey on Routing in Data Centers: Insights and Future Directions

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Recently, a series of data center network architectures have been proposed. The goal of these works is to interconnect a large number of servers with significant bandwidth requirements. Coupled with these new DCN structures, routing protocols play an important role in exploring the network capacities that can be potentially
delivered by the topologies. This article conducts a survey on the current state of the art of DCN routing techniques. The article focuses on the insights behind these routing schemes and also points out the open research issues hoping to spark new interests and developments in this field

Data centers are driven by large-scale computing services such as web searching, online social networking, online office and IT infrastructure outsourcing, and scientific computations. It is expected that in the future a substantial portion of Internet communication will take place within data center networks
(DCNs) [1]. To take the advantage of economies of scale, it is common for a DCN to contain tens or hundreds of thousands of servers. Many data center applications are data and communication intensive. For example, a simple web search request may touch 1000+ servers, and data storage and analysis applications may interactively process petabytes of data on thousands of machines. They define various traffic patterns such as one-to-one, one-to-all, and all-to-all communications. A fundamental question for DCN is how to interconnect a large number of servers with significant aggregate bandwidth requirements. To this end, many research efforts have been spent on designing scalable and efficient DCN structures. Generally, the proposed structures include server-centric structures
[2, 3], switch-centric structures [1, 4] and hybrid electrical/optical structures [5, 6]. In order to fully explore the network capacities within the physical structures, researchers have proposed a series of DCN routing protocols. Different from Internet routing such as OSPF/ISIS (link-state routing) or BGP
(path-vector routing), most of the existing DCN routing schemes are specially customized to DCN topologies. In this article, we survey the current state of the art of DCN routing algorithms. We review the new DCN structures
and relevant basic routing schemes. We introduce opportunities with DCN traffic engineering. We discuss open questions on DCN multicasting. We explore potential security issues with DCN routing. We then conclude the article

S:Persian Channel of IEEE ComSoc

Year:2011

By:Kai Chen,Chengchen Hu,Xin Zhang,Kai Zheng,Yan Chen,Athanasios V. Vasilako

File Information :English Language/5 Page/Size:130 K

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منبع :Persian Channel of IEEE ComSoc

سال :2016

کاری از :Kai Chen,Chengchen Hu,Xin Zhang,Kai Zheng,Yan Chen,Athanasios V. Vasilako

اطلاعات فایل:زبان انگلیسی/5 صفحه/حجم :130 K

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