Designing a 100G Network Architecture: Key Insights and Requirements - An Example

In the era of Big Data, the need for efficient and scalable network architectures has never been more critical. 100G network architectures are a testament to how rapidly the digital world is evolving. Let's delve into the key requirements of such an intricate design, utilizing an example encompassing 192 racks and a total of 6 PODs.

The Foundation: Understanding the Layout

  • Total Racks: 192 racks distributed evenly across all PODs.
  • Server Distribution: With 7200 server ports, we're looking at an impressive 3600 servers.

Embracing the CLOS Architecture:

Each of the 6 PODs is structured based on the leaf-spine CLOS architecture - a design choice ensuring maximum scalability and connectivity.

  • Spine Division: In every POD, the spine switches are divided meticulously into two groups – Spine Group #1 and Spine Group #2. Each of these groups consists of 10 individual spines.
  • Leaf Switches: Each POD is equipped with 30 leaf switches. For every pair of these switches, the primary leaf (typically referred to as leaf-01) connects to Spine Group #1, while the secondary leaf (or leaf-02) is wired to Spine Group #2.
  • Server Racks and Network Racks: With 30 server racks in each POD, and two dedicated network racks per block, there’s a one-to-one correspondence between leaf switches and server racks. As for server port connections, the primary one links to an odd-numbered rack while the secondary connects to an even-numbered counterpart.
  • Super Spine Group Connectivity: A unique feature of this architecture is the Super Spine Group's connection methodology. This group only needs to link to a single spine in each of the spine groups within every POD. Crucially, the wiring must maintain consistency across all PODs.

At a Glance: Key Numbers per POD

  • Spine Switches: 20 (10 in each group)
  • Leaf Switches: 30
  • Server Ports: 1200 (40 ports multiplied by 30)
  • Servers: 600

Conclusion: Bringing the Vision to Life

Building a 100G network architecture isn't just about numbers and connections. It's about envisioning a future where data flows seamlessly, where scalability meets performance, and where every connection is optimized for efficiency. With the roadmap laid out and under the banner of "Innovate • Design • Manufacture," it's time to transform this intricate blueprint into a tangible reality.

#100GNetworkArchitecture #ScalabilityInDesign #NetworkInnovation

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