This course covers a set of advanced topics in computer networks. A scalable and flexible data center network consolidate layer2layer3 into a virtual layer 2 separating naming and addressing, also deal with dynamic loadbalancing issues. 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 systembased address resolution to scale to large server pools without introducing complexity to the network control plane. Wiring in an ethernet network is flexible because the net work can be configured. Hamilton, navendu jain, srikanth kandula, parantap lahiri, david a. The nephele data center network 4th symposium for optical interconnect in data centres pod. Chuanxiongguo, haitao wu, kun tan, lei shi, yongguang zhang, songwulu.
At the top of the rack, place a switch the topofrack tor switch to connect the servers together. A scalable and flexible data center network perspectives. In some examples, a twolevel power optimization model may be established to reduce the power consumption of datacenter networks by switching off network switches and links while still guaranteeing full connectivity and maximum link utilization. Jan 02, 2014 data center design scalable and flexible january 2, 2014 january 2, 2014 ask laura, data centers what are some primary areas of focus concerning data center design. Maltz parveen patel sudipta sengupta microsoft research abstract to be agile and cost e. As a result, data centers are faced with evergrowing demands. Means for communicating with other servers, regardless of where they are in the data center. Maltz parveen patel sudipta sengupta microsoft research abstract agility promises improved risk management and cost savings.
Sylvia ratnasamy gianluca iannaccone arvind krishnamurthy ion stoica. In particular, the data center network should enable any server. A scalable and faulttolerant network structure for data centers, booktitle in proc. Traditional routing and forwarding protocols in data center usually rely on static hashing, and may cause avoidable bottlenecks. To meet these goals, we present vl2, a practical network architecture that scales to support huge data centers with uniform high capacity. Flexible, scalable and global data center colocation. Delivering additional it rooms, air optimizers and power management rooms can incrementally increase the size and capacity of the facility. Data centre lecture 6 advanced topics in networking. To meet these goals, 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 layer2 semantics. Previous inpacket bloom filterbased datacenter multicast schemes have been proposed to address the scalability issue. A a a a a a cloud computing outline discussion of alloy homework net4. A scalable and flexible data center network sigcomm 2009 4 f10. In 2008, 10 gige switches are on the verge of becoming commodity parts.
Ragingwire data centers colocation services enable your enterprise to meet strategic business objectives by accelerating time to market, improving operating efficiency, and avoiding costly downtime all while addressing both your current and future mission critical it demands. Vl2s implementation leverages proven network technologies, already available at low cost in highspeed hardware implementations, to build a scalable and reliable network architecture. The rising tide of dataintensive, massive scale cluster computing is. Chuanxiong guo, haitao wu, kun tan, lei shi, yongguang zhang, songwu lu. Vl2 is a scalable data center architecture to provide uniform high capacity between servers, performance isolation between services, ethernet layer 2 semantics in large data centers, and dynamic resource allocation across large server pools. A genetic algorithm for flow scheduling in data center. A scalable and flexible data center network microsoft. Optical switching for scalable and programmable data center. Datacenter new challenges to networking ethernet, and. These proposals all seek to improvethe scalability and costeffectivenessof currentdata. Scalable datacenter multicast using inpacket bitmaps. A cost comparison of data center network architectures. The authors from microsoft research clearly, had the chance to experiment with real data. Feb 09, 2011 theres no denying the time has come to implement new design fundamentals that better address the specific needs of the massively scalable data center.
There are many reasons why we need innovation in data center networks but lets look at a couple i find particularly interesting and look at the solution we offered in a recent sigcomm paper vl2. Businesses today are expected to grow fast, which means that their data centers must grow with them quickly. Vl2s design is driven by detailed measurements of traffic and fault data from a large operational cloud service provider. Vl2s implementation leverages proven network technologies, already available at low cost in highspeed hardware implementations, to build a scalable and reliable network. Connected and immersive vehicle systems go from development to production faster intel atom a3900 automotive processors automotive intel atom a3900 automotive processors power invehicle experiences and speed the deployment of smart and connected features for the next generation of cars. Introduction cloud services need data centers with hundreds of thousands of servers and that concurrently support a large number of distinct services. Data centers panduit electrical and network cables. Abstract wepresent past,anovel network architecture for data center ethernet networks that implements a peraddress spanning tree routing algorithm. Introduction cloud services need data centers with hundreds of thousands of. Slides used and adapted judiciously from cos 561, advanced computer networks. Center network work with albert greenberg, james r. Data center network validation data centers telecom data. They encode a multicast tree in a bloom filter carried in each packet.
The focus is on principles, architectures, and protocols used in modern networked systems, such as the internet itself, wireless and mobile networks, high performance networks and data center networks. Data center networking, optical circuit switching, hybrid network. However, in some sense, figure 2understates the dif. They argue that data centers should provide an adaptive and. In particular, the data center network should enable any server to be assigned to. The growing speed and footprint of data centers is challenging it managers to effectively budget and develop reliable, highperformance, secure, and scalable network infrastructure environments. Metro infrastructure at the data center longhaulinfrastructure near the data center carrier hotels in the area network diversity this report provides data on the providers and maps relevant to the data center at 23070 shawroad,sterling,va.
Live vmm transfers an active virtual machine vm from one physical host to another across different data. If not, what are the major factors that we need to put into consideration with the new and future server technology in mind. 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. In particular, the data center network should enable any server to be assigned to any service. An implementation perspective antonio gonzalez, fernando latorre, and grigorios magklis 2010. A scalable and flexible data center network microsoft research presented by. Reading the mostrecent issue of communications of the acm, i enjoyed the reprint of vl2. Abstract to be agile and cost effective, data centers should allow dynamic resource allocation across large server pools. A security state transfer model for virtual machine. 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 endsystem based address resolution to scale to large server pools, without introducing complexity to the network control plane.
Hamilton, navendu jain, srikanth k, changhoon kim, parantap lahiri, david a. Is there a rule of thumb to size the square footage for a new data center that is cost effective for at least another 10 years. Past scalable ethernet for data centers brent stephens y, alan cox y, wes felter z, colin dixon z, and john carter z yrice university zibm research december 11th, 2012 brent stephens past. Vl2 s implementation leverages proven network technologies, already available at lowcost in highspeed hardware implementations, to build a scalable and reliable network architecture. Maltz, parveen patel, and sudipta sengupta microso research changhoon kim tenets of cloud. Deployment and maintenance of current data center networks is costly and prone to errors. The core objective of a data center network is to maintain the utilization of the data center servers at a uniformly high level, and doing so requires agility. Apr 15, 2014 technologies are presented for power optimization of datacenter networks in a hierarchical perspective. Abstract there is a growing body of research exploring new network architectures for the data center. To be agile and cost effective, data centers should allow dynamic resource allocation across large server pools. A cost comparison of data center network architectures lucian popa. Bladeroom scalable data centers comprise a series of standardized it rooms with scalable air optimizers and power management rooms.
Hamilton navendu jain srikanth kandula changhoon kim parantap lahiri. A scalable, flexible, and highbandwidth data center network ye yu and chen qian department of computer science, university of kentucky ye. A highradix, lowlatency optical switch for data centers. A scalable and flexible data center network sigcomm. To meet its current and future needs, copa data wanted to build a futureproof scalable and robust infrastructure which supports operations and development with enough performance for years to come. Data center networks are nowhere close to the biggest cost or the even the most significant power consumers in a data center cost of power in large scale. Dcell is a recursive, scalable network topology that quick recovery from link and router failures. Todays data center network prevent agility in several ways.
Hamilton navendu jain srikanth kandula changhoon kim parantap lahiri david a. Data center network topologies raj jain washington university in saint louis saint louis, mo 63. Networking the cloud, albert greenberg, icdcs 2009 keynote talk 6. Its important to first build a solid foundation of scalability, agility, and performance. Traffic in todays data center networks grows rapidly. Nov 30, 2005 how can we design a scalable data center. A quick summary of the vl2 datacenter network scheme tom. Data center network topologies washington university. Vl2 s implementation leverages proven network technologies, already available at low cost in highspeed 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. A new primary copy method to support highlyavailable distributed systems. A highradix, lowlatency optical switch for data centers dan alistarh, hitesh ballani, paolo costa microsoft research adam funnell, joshua benjamin, philip watts, benn thomsen university college. By far the biggest infrastructure cost in a highscale service is the servers.
However, these schemes induce high bandwidth overhead due. Our goal is to minimize the maximum single link utilization of the network. Scalable data center network architecture must be capable of hosting millions of servers by using minimal costs in terms of interface cards. Architectures, algorithms, and opportunities dennis abts and john kim 2011 quantum computing for architects, second edition tzvetan metodi, fred chong, and arvin faruque 2011 processor microarchitecture. A scalable and faulttolerant network structure for data centers chuanxiong guo, haitao wu, kun tan, lei shiy, yongguang zhang, songwu luz microsoft research asia, ytsinghua university, zucla. Hierarchical energy optimization for datacenter networks. A scalable and flexible data center network, cacm, vol. Connected and immersive vehicle systems go from development. The aim of the vl2 paper is to build a scalable and flexible data centre network.
Computer networks, fall 2012 presented by naveen chekuri outline introduction problem solution approach design decisions initial data center traffic analysis addressing and routing evaluation observations introduction a data center is a centralized repository. Leveraging a trick used in many systems 9, vl2 assigns servers ip addresses that act as names alone, with no topological signi cance. Scalability is a key issue in datacenter multicast as it needs to support a large number of groups in commodity switches with limited fast memory. A scalable, commodity data center network architecture. Virtual machine migration vmm is one of important services is used as a tool to facilitate system maintenance, load balancing, fault tolerance, ondemand service offerings. A scalable and flexible data center network albert greenberg james r.
Common concerns with vlb, such as the extra latencyand the consumption of extra network capacity caused by path stretch, are overcome by a combination of our environment propagation delay is very small inside a data center and our topology which. A scalable and flexible data center network discussion of stratos. Scalable flexible cloud connected lower it costs with a scalable collaboration platform flexibility to deploy onpremises, in the cloud, or in a hybrid scenario naturally extend business applications to the cloud with simple, integrated hybrid solutions minrole for improved rolebased installation architecture support for windows server sql. Vl2 s design is driven by detailed measurements of traffic and fault data from a large operational cloud service provider. A quick summary of the vl2 datacenter network scheme. Mar 17, 2011 reading the mostrecent issue of communications of the acm, i enjoyed the reprint of vl2. A scalability study of enterprise network architectures. Built scalable and efficient data center with microsoft hyperconverged platform and mellanox networking. This paper describes and evaluates ga3 generalized automatic address assignment, a discovery. A scalable and flexible data center network summary.
Computer networks, fall 2012 presented by naveen chekuri outline introduction problem solution approach design decisions initial data center traffic analysis addressing and routing evaluation observations introduction a data center. A scalable and flexible data center network by albert greenberg, james r. Snoeren, and george porter university of california, san diego abstract the everincreasing bandwidth requirements of modern datacenters have led researchers to propose networks based upon optical. Vl2 virtual layer 2 hakim weatherspoon assistant professor, dept of computer science. A scalable and faulttolerant network structure for. A scalable, lowcomplexity, optical datacenter network william m. Core layer forwards data center ingress and egress traffic. This growth is having a direct impact on the amount of power and cooling required to support overall data center demands. The network validation also reports on related telecommunications infrastructure information for theareas. We present a genetic algorithm to make better use of the resources.
Microsoft research asia, tsinghuauniversity, ucla dcell. Mellette, rob mcguinness, arjun roy, alex forencich, george papen, alex c. In order to avoid manual configuration, many of them require centralized administrators which constitute a clear bottleneck, while distributed approaches do not guarantee sufficient flexibility or robustness. Delivering consistent network performance in multitenant. A scalable, lowcomplexity, optical datacenter network. Intel offers one flexible architecture that lowers the.
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