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BULAT solution for DPCs

With a growing number of remote employees and the popularity of remote services, companies invest more and more in cloud computing and virtualization. Multiple SaaS solutions and end-users contribute to it as well, creating the need for a more effective and resilient DPC infrastructure for enterprise networks of various levels.

A few years ago, most DPC networks were based on the traditional three-tier architecture. This architecture came from campus area networks. The traditional three-tier architecture is effective for most traffic models, including Southbound and Northbound DPC networks. It is widely used in practice and is mature and stable. However, as technology advances, this architecture no longer satisfies the needs of DPC networks. With the development of cloud computing, horizontal, or East-West traffic, begins to dominate in data centers. This applies to almost all cloud computing, virtualization, and big data services. The horizontal traffic model becomes the bottleneck for data transmission in vertical networks. This is due to many "extra" nodes for data trafficking, including routers and switches. Host-to-host access traffic has to pass through many upstream ports, which significantly reduces performance. Thus, the three-tier principle used to build networks adversely affects their performance. In other words, the three-tier architecture that is currently the mainstream can no longer meet the requirements of DPC networks.

Advantages of BULAT solutions

In the Leaf-Spine architecture, traffic can be distributed across all available channels without congestion. As the number of connections to the Leaf switches increases, the link bandwidth oversubscription ratio increases and can be reduced by increasing the link bandwidth between the Leaf and Spine switches.


The Leaf-Spine architecture includes multiple, high-bandwidth direct connections to avoid slowdowns because of bottlenecks and provide high-performance forwarding with low latency.



Simplicity
  • Two tiers of architecture and two types of switches: Spine and Leaf.
  • Increased performance of the DPC network thanks to the changed physical network architecture, i.e. network simplification and its alignment with Leaf-Spine architecture.
Reliability
  • Each Spine node is connected to each Leaf node and vice versa, the failure of any link or switch at any tier of the architecture does not affect the structure of the entire network and cannot lead to its failure.
Scalability
  • A maximum of three devices are involved in communication between any two servers, and each Spine node is linked to each Leaf node. Network scaling is done by simply increasing the number of Spine or Leaf nodes.