Journal ArticleDOI
VL2: a scalable and flexible data center network
Albert Greenberg,James R. Hamilton,Navendu Jain,Srikanth Kandula,Changhoon Kim,Parantap Lahiri,David A. Maltz,Parveen Patel,Sudipta Sengupta +8 more
TLDR
VL2 is a practical network architecture that scales to support huge data centers with uniform high capacity between servers, performance isolation between services, and Ethernet layer-2 semantics and can be deployed today, and a working prototype is built.Abstract:
To be agile and cost effective, data centers must allow dynamic resource allocation across large server pools. In particular, the data center network should provide a simple flat abstraction: it should be able to take any set of servers anywhere in the data center and give them the illusion that they are plugged into a physically separate, noninterfering Ethernet switch with as many ports as the service needs. To meet this goal, we present VL2, a practical network architecture that scales to support huge data centers with uniform high capacity between servers, performance isolation between services, and Ethernet layer-2 semantics. VL2 uses (1) flat addressing to allow service instances to be placed anywhere in the network, (2) Valiant Load Balancing to spread traffic uniformly across network paths, and (3) end system--based address resolution to scale to large server pools without introducing complexity to the network control plane. VL2's design is driven by detailed measurements of traffic and fault data from a large operational cloud service provider. VL2's implementation leverages proven network technologies, already available at low cost in high-speed hardware implementations, to build a scalable and reliable network architecture. As a result, VL2 networks can be deployed today, and we have built a working prototype. We evaluate the merits of the VL2 design using measurement, analysis, and experiments. Our VL2 prototype shuffles 2.7 TB of data among 75 servers in 395 s---sustaining a rate that is 94% of the maximum possible.read more
Citations
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Proceedings ArticleDOI
Review of New Data Center Network Structure
TL;DR: In this paper , the authors summarized the new data center network structure pro-posed in recent years from the aspects of switch-centric, server-centric and wireless data center, wired and wireless combination, introduces its performance, fault tolerant routing efficiency and other advantages.
Proceedings ArticleDOI
Time-division TCP for reconfigurable data center networks
Shawn Chen,Weiyang Wang,Christopher Canel,Srinivasan Seshan,Alex C. Snoeren,Peter Steenkiste +5 more
TL;DR: Time-division TCP (TDTCP) is presented, a new TCP variant designed for reconfigurable data center networks that improves throughput over both traditional TCP variants, such as DCTCP and CUBIC, and multipath TCP by 24--41% without requiring significant in-network buffering to hide path variations.
Dissertation
Datacenter-Network-Aware Online Load Balancing in MapReduce
TL;DR: It is shown that the optimal strategy is a constrained version of online minimum makespan and, in the MapReduce context where pairs with identical keys must be scheduled to the same machine, an online algorithm with a provable 2-competitive ratio is proposed.
Dissertation
Harnessing the power of implicit and explicit social networks through decentralization
TL;DR: It is however necessary to improve P2P systems in order to better protect the users data and increase the trust between users, and four contributions going in that direction are presented, including TAPS, which provides users with an estimation of the trustworthiness of other users based on information extracted from a social network.
References
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