What is a Leaf-Spine Architecture and how Asterfusion Contributed to Next-Generation Data Center?
Leaf-spine network architecture is composed of a leaf layer and a spine layer. The leaf layer includes Layer 2 switches (leaf switches) for connecting servers and storage devices; the spine layer includes Layer 3 switches (spine switches) for routing and forwarding, which is the backbone of the network.
What is Leaf-Spine Architecture
As shown in the figure above, the leaf-spine network architecture is composed of a leaf layer and a spine layer. The leaf layer includes Layer 2 switches (leaf switches) for connecting servers and storage devices; the spine layer includes Layer 3 switches (spine switches) for routing and forwarding, which is the backbone of the network.
What is a Characteristic of Spine-and Leaf Architecture
In the Spine-Leaf network, the network is simplified from the third level to the second level, and through the full-mesh connection built between the spine and leaf switches. It fully utilizing the very mature load sharing technology of the IP network (ie ECMP Routing, Equal- Cost Multi Path Routing), successfully resolved the problems that the three-level architecture cannot solve:
The switching domain (he layer 2 broadcast domain) is limited to the part below the leaf switch, no longer needs STP protocol for loop detection, and makes full use of bandwidth;
Enable bandwidth expanding horizontally: If the bandwidth is insufficient, increase the number of spine switches to horizontally expand bandwidth;
Easy to expand the scale of the network, only need to expand the spine switch and the corresponding Leaf switch to expand the scale of the underlying support network;
Lower performance requirements for a single switch: the north-south traffic can go out from the leaf node or the spine node, and the east-west traffic is distributed on multiple paths, reducing the performance requirements for a single switch.
The communication between virtual computing nodes is carried on the underlying support network in a virtual network mode, so that the convenience of the cloud and the number of virtual computing nodes are no longer limited by the underlying support network;
Applications in the cloud can be migrated freely within the reachable range of the virtual network, and the IP address can be guaranteed not to change during the migration process, thus laying a solid foundation for uninterrupted services;
The two-tier network architecture greatly simplifies the switching path and provides a high performance and high reliability switching channel for the communication between virtual computing nodes (i.e. east-west traffic).
Build Data Center Networks With Asterfusion Leaf Spine Switches
Here we take Asterfusion leaf-spine switches as an example to show how to build a leaf-spine architecture to build hyper-scale, cost-effective data centers. In this case, we will use Asterfusion CX308P-48Y-N as the leaf switch and CX532P-N as the spine switch.
Building hyper-scale, cost-effective data center with Asterfusion CX-N Leaf and Spine Switch
With the rapid development of data-intensive services such as video, social networking and big data analysis, the flow of cloud data centers shows an exponential growth trend, which inevitably requires the deployment of tens of thousands of servers, and also puts forward the demand for large-scale construction of networks.
The application uses Asterfusion CX532P-N as Fabric layer and Spine layer, CX308P-48Y-N as Leaf layer, and uses three-layer CLOS architecture to build a super-large cloud data center network. All layers are interconnected by 100G, and 25G optical fibers are used to connect servers with 25G or 10G interfaces, enabling access to 24,576 servers.CX308P-48Y-NCX532P-N
The specific quantity and switching capacity are analyzed as follows:
Asterfusion Leaf-Spine Switch Recommendation
Asterfusion offers 3.3Tbps-6.5 Tbps programmable network switches based on Intel tofino which are well-suited for Leaf/Spine fabric as well as smart gateway of data centers, enterprises, and cloud service providers’ network deployments.Asterfusion offers 2 Tbps -12.8 Tbps data centers’ leaf and spine switch based on Teralynx chip, it preloaded with SONiC enterprise distribution which provides users a simple, plug-and-play deployment and turnkey solution.
It is very important to understand the leaf-spine network architecture because it has significant advantages over the traditional three-tier network architecture. For data center network administrators, deploying leaf-spine network architectures and purchasing cost-effective and high-performance data center switches are essential to meet existing business needs and future data center growth.
For more Asterfusion leaf-spine switches info, please contact [email protected]; CP/ Whatsapp: +86 18916960201 or visit our website: www.cloudswit.ch.
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