What to look for in a data center interconnect wan optimization vendor. Put simply, connecting data centers together over routed links is exactly how we create discrete networks within each data center. In this blog, ill look at different options for dci and how well they fulfill our design. Understanding layer 2 over layer 3 part 2 netcraftsmen. All layer 2 data center interconnect technologies discussed so far are industry standards. Huawei cloud fabric data center interconnect and disaster. All qfx5110 switches are designed to consume the lowest possible power while optimizing space, reducing data center. Design and deployment of data center interconnects using. Virtual private lan services open the door to new data center network management strategies. Implementation guide implementing l2 at the data center access layer on juniper networks infrastructure this paper is structured to first present the data center design assumptions pertaining to physical and logical connectivity of the access and core data center networks. A given subnet can only exist either on one side or the other. In all traditional data centers, vlans virtual local area networks are used to enforce layer 2 isolation.
Complete document is available as downloadable pdf to. Vxlan should be transparent to end hosts provide l2 segmentation ability 4096 vlans 24 bit vxlan network identifier vni 16m vxlan segments forwarding overview data plane based learning and forwarding vxlan relies on data. Application note data center interconnect applications for a variety of dci needs access peering this application is ideal where a high bandwidth connection is needed between a data center and a peering. Improving metro data center interconnect mdci with the. Bgpevpn fabric as colocation data center interconnect about mellanox mellanox technologies is a leading supplier of endtoend infiniband and ethernet interconnect solutions and services for servers and storage. Data center interconnect dci technology connects two or more data centers together over short, medium or long distances using highspeed packetoptical connectivity. Comprehensive cisco dci solution for lan, layer 3, and san extensions flexibility. Its based on reallife queries and network designs but does not represent an actual customer network.
The point of view taken for this presentation is that of the network and transport characteristics in the face of the changes taking place. In order to support the movement of virtual machines between physical machines, technologies such as vmwares vmotion require both the source and destination services to be on the same layer 2 domain, allowing the virtual machine to move between the. In my previous blog, i talked about some terminology and design considerations for l2 data center interconnects. These offerings address the requirements of high performance and fast convergence. Arista 7280r macsec data center switch router seriesdata sheet. Mellanox interconnect solutions increase data center efficiency by providing the highest throughput and.
Data center interconnect dci, where you need the same vlan subnet at two or more data centers. Which solution is best for datacenter interconnect. Data center interconnect dci data centers are extending beyond traditional boundaries due to. Each data center has connections to the internet and enterprise wan network connecting data centers with remote offices see figure 1 for details. Nextgeneration data center interconnect powered by the adaptive cloud fabric data center interconnect dci is an architecture for connecting two or more geographically distributed data center locations to achieve a cohesive operating environment.
Network automation in the data center nadc course overview. Application note data center interconnect applications for a variety of dci needs access peering this application is ideal where a high bandwidth connection is needed between a data center and a peering point. Data center migrations, where servers or virtual machines vms need to move to servers in another part of the data center across the l3 core. Data center interconnect design options network computing. Data center interconnect prado yang system engineer 20827. Slides from sigcomm internet measurement conference imc 2010 presentation of analysis and network traffic characteristics of data centers in the wild. Data center interconnects dci products are targeted at the edge or border leaf of data center environments, joining data centers to each other in. Pluribus data center interconnect validated design guide. Flexible 100gbe qsfp pluggable optics ensures a broad choice of cost effective connections. Data center traffic and measurements cornell university. In this blog, ill look at different options for dci and how well they fulfill our design requirements for a dci. This interconnectivity between separate data centers enables them to work together, share resources andor pass workloads between one another.
Data center interconnect dci, where you need the same vlan subnet at two or more data centers, for cluster heartbeat or vmotion, typically. Low latency data center interconnect sing infinera cloud xpress optical transport and arista data center switches 4 lippis enterprises, inc 2015 evaluation conducted at infineras sunnyvale lab on iia. Figure 114 shows how a regular layer 2 frame is encrypted. Solution brief data center interconnect the fujitsu data center interconnect solution to address the totality of dci needs, fujitsu offers a complete multihaul solution. Development of optical interconnect pcbs for highspeed. The traditional way of designing data center dc networkselectrical packet switches arranged in a multitier topologyhas a fundamental shortcoming.
View huawei cloud fabric data center interconnect and disaster recovery solution. Ok, you probably guessed that from all the prior articles about it. Data tampering is prevented by authenticating relevant portions of the frame. Implementation guide implementing l2 at the data center access layer on juniper networks infrastructure this paper is structured to first present the data center design assumptions pertaining to physical and logical connectivity of the access and core data center. Vpls provides data center connectivity for l2 traffic site 1 site 2 multivendor.
The move to the cloud decreases capital expenditures, but it. The pluribus dci solution leverages deploymentproven dell emc open networking switches to deliver multiterabit, highdensity capacity to support the most demanding data center. Cisco data center interconnect design and implementation guide system release 1. As massive amounts of data are managed, distributed and exchanged across the globe, the nature of a successful business often relies on the stability of its it infrastructure. Data center interconnect refers to the networking of two or more different data centers to achieve business or it objectives. Overview of different solutions to interconnect data center networks. Routers or other layer 3 devices break up layer 2 domains. Data center interconnection is one of the most important qualities to look for in a data center provider. It is also important to keep in mind additional considerations.
Retaining the l2 domains at each data center or using ip. External routing with layer2 data center interconnect dci. Layer 2 data center interconnect options network world. Jan 05, 2018 inter data center interconnect is the connection between two data centers or 2 buildings within a large data center campus. Huawei cloud fabric data center interconnect and disaster recovery.
Low latency data center interconnect sing infinera cloud xpress optical transport and arista data center switches 4 lippis enterprises, inc 2015 evaluation conducted at infineras sunnyvale lab on iia test euipment lippisreportcom infinera cloud xpress cx100ecx100e rfc 2544 layer 2 cut through latency test infinera cloud xpress cx100ecx100e. Depending on the provisioned capacity, the interconnect. We highlight mpls evpn architecture as the newest option for highscale cloud, data center, and private networks. Flexible 100gbe and 40gbe qsfp pluggable optics ensures a broad choice of cost e. Chapter 2 data center interconnect solution overview lan extension considerations figure 24 data center migration providing a l2 path between sites is often desirable in these cases to ensure a. Cloud providers must costeffectively balance traffic among data centers. Data center traffic and measurements hakim weatherspoon assistant professor, dept of computer science.
Relieving data center resources from a heavy workload is usually referred to as. This threeday course is designed to provide students with the knowledge required to automate sdnnfv solutions in their data centers. The ethernet switching landscape part 07 data center. They isolate the effects of broadcasts, flooding, and layer 2 loops.
Cloudengine 6860 series data center switches huawei cloudengine 6860 ce6860 for short series switches are nextgeneration 25g ethernet switches designed for data centers and highend campus. Over the past decades, as data centers grew increasingly in size and technology, the need for extending layer 2 networks across racks within a data center and even across data centers. Data center interconnect design guide computer network. We are probably doing layer 2 over layer 3 transport because. The 7280r macsec data center switch router series can be deployed in a wide range of open networking solutions including secure data center interconnect dci, large scale layer 2 and layer 3 cloud designs, overlay networks and virtualized or. The designers must decide in advance how much capacity to provision between topofrack tor switches. Interconnect based on remote direct memory access rdma offers the ideal option for boosting data center efficiency, reducing overall complexity, and increasing data.
The pluribus dci solution leverages deploymentproven open networking switches to deliver multiterabit, highdensity capacity to support the most demanding data center. This design guide describes an arista solution for providing simple, robust, and costeffective data center interconnection dci that enables layer2 services to be. Interconnect architecture for transparent intra and inter data center sdmtdmwdm networking, lightwave technology, journal of, vol. Inter data center interconnect is the connection between two data centers or 2 buildings within a large data center campus. Bgp evpn in datacenter and layer 3 data center interconnect. This solution incorporates a comprehensive suite of products and services specifically designed for data center. With dci, interconnectivity between distributed data centers goes.
Interconnect based on remote direct memory access rdma offers the ideal option for boosting data center efficiency, reducing overall complexity, and increasing data delivery performance. L2 and l3 nexthops igmp and pim snooping snooping with mclag further flooding optimization by proxyarp, dhcprelay tag. Data center interconnection with vxlan arista networks. Lets say were doing layer 2 l2 over a routed network, to limit the size of layer 2 failure domains. This data center interconnect dci design and implementation guide dig. Cisco nexus switching nextgeneration data center architectures kevin corbin, ccie no. Data center l2 interconnect and failover netcraftsmen.
A variety of 1finity pointtopoint configurations can be set up over time to support increasing demand. Students will build on their knowledge of data center networking and learn how to use ansible to automate building scalable ip fabrics. Apr 02, 20 routers or other layer 3 devices break up layer 2 domains. Furthermore, the qfx5110 offers vxlan layer 2 and layer 3 gateway support, making it an ideal solution for overlay deployments in the data center. Industry people refer to data center interconnect as dci. Data center interconnects dci products are targeted at the edge or border leaf of data center environments, joining data centers to each other in a pointtopoint or pointtomultipoint fashion, or at times extending the connectivity to internet gateways or peering points. Acme enterprises has two data centers linked with a layer2 data center interconnect dci implemented with ciscos overlay transport virtualization otv. Concerning data center interconnect dci, i really like the new cisco otv technology. Df elected for a given esid designated l2 bum authority df generates a split horizon mpls label and distributes to all pes for each esid nondfs can send l2 bum to mpls network using this split horizon mpls label dfs identify own esid and drop the packet dfs send l2 bum to mpls network nondfs drop the l2. Cisco data center interconnect design and implementation guide. Data center interconnect solutions for large enterprises tmcnet. Configure a layer 2 vpc data center interconnect on a. Low latency data center interconnect using infinera cloud.
I will focus on layer 2 dci technologies because these are more complex to implement and have more design considerations than layer 3 dci technologies. Understanding layer 2 over layer 3 part 1 netcraftsmen. Nextgeneration data center interconnect powered by the. Layer3 data center interconnect dci between vxlanevpn and mpls l3vpn to extend the layer3 network connectivity across data centers over a wan. Vxlan should be transparent to end hosts provide l2 segmentation ability 4096 vlans 24 bit vxlan network identifier vni 16m vxlan segments forwarding overview dataplane based learning and forwarding vxlan relies on dataplane learning of associated host mac addresses to vtep ips.
Implementing l2 at the data center access layer on juniper. Now, l2 is simple, but can cause some serious issues when it. Dci is not a protocol, but rather a general networking industry term referring to the bridging of layer 2 domains between geographically distinct data centers. One of the more specialized featured that appears in a limited number of ethernet switches is data center interconnect dci. Datacenter interconnect layer 2 extension considerations focus of this session application needs embedded ip addressing driving customers to bring layer 2 across dci server ha clusters, geoclustering move, consolidate servers virtual machine vm mobility requires layer 2 extension eompls l2 l2 main data center backup data. A data center interconnect is mainly accomplished using networking tools and. In the second part, i will focus specifically on vxlan as a data center interconnect. Layer2 dci is the least desirable data center interconnect solution, as it extends a single broadcast domain and thus a single failure domain across multiple sites, turning them into a. Table 1 illustrates the projected increase of the total node bidirectional interconnection bandwidth according to ibm 4.
External routing with layer2 data center interconnect. These inter data center interconnects are typically between 10km and 80km. Chapter 2 data center interconnect solution overview lan extension considerations figure 24 data center migration providing a l2 path between sites is often desirable in these cases to ensure a smooth migration and minimize the experienced application down time. The purpose of a dci is to extend specific vlans between different data centers, which offers l2 adjacency for servers and networkattached storage nas devices that are separated by large distances. Evpncontemporary layer 2 interconnect white paper 2015, juniper networks, inc. Why is there a wrong way to interconnect datacenters. Colocation datacenter interconnect with vxlan and bgpevpn. This document provides guidance on deploying and verifying aoscx switches with l3 virtual router redundancy protocol vrrp gateways across an ethernet ring protection switching erps ring that provides data center interconnect dci functionality. Next generation scalable softwaredefined data center the pluribusdell open data center interconnect solution enables organizations to simplify their data center network with an adaptive and truly unified fabric that enables operational agility and seamless layer 2 l2 interconnectivity extending from a single location to a large number. Let us now look into two innovative proprietary technologies from cisco. Data center interconnect dci, communication that occurs between data centers, plays a significant role in networking today. When the datacenter interconnect fails, you can fail an entire network over, or not.
The pluribusdell open data center interconnect solution enables organizations to simplify their data center network with an adaptive and truly unified fabric that enables operational agility and seamless layer 2 l2 interconnectivity extending from a single location to a large number of geographically distributed data centers. Distributed virtual data center for enterprise and service. Data center networking university of virginia school of. Cisco data center interconnect dci solutions offer. In another example of inter data center interconnect, is if a certain video is getting a lot of views, the video is not only kept in its central location, but copies of the video are pushed to metro data centers where access is quicker because its stored closer to the user, and the traffic doesnt tie up long haul networks. Roce in the data center in a world of everincreasing data, the speedy transfer of all that data is critical to the information being used efficiently. Continue reading about data center interconnect dci learn how cloud dci improves traffic delivery. Relieving data center resources from a heavy workload is usually referred to as activeactive dr mode figure 2. Can anybody guide me to the link or pdf which talks about the pros and cons of each solution. Datacenters interconnect dci considerations eompls l2 l2 main data center backup data center eomplsogre storage storage ip routed service dwdmcwdm l3 l3 san san l2 l2 fc fc waas waas layer 3 extensions san extensions lan extensions application virtualization dci involves. Were doing eompls to migrate servers physical or virtual past the routed core in a moderately large data center. Sdn solutions that deliver unrestricted data center networking while enabling sdn extension. Data center interconnect dci is the process of connecting geographically distributed data center locations, in order to form a consistent set of it resources that can be used for scaling the data center.
Executive summary this white paper describes the layer 2 interconnect options available for todays network designer. No physically bound application areas, enabling application mobility cisco dci lan extension solutions a loopfree lan extension stretching across the data center wan is a crucial. Whatever technique you use for dci, interconnecting data centers at l2, you have the problem of managing and optimizing inbound and outbound traffic to use the shortest path to or from the. Mellanox interconnect solutions increase data center. A hot standby data center can be used for application recovery or to relieve the primary data center from a heavy workload.
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