FS 200G Switch and Deployment for Cloud & AI Data Centres Networks Evolving to 400G

NicholasSep 22 20251 min read

The rise of artificial intelligence, big data, and cloud computing has placed unprecedented network pressure on cloud and AI data centres. In cloud data centres, multi-tenant environments and massive applications are driving an exponential increase in east-west traffic, making traditional 100G networks a bottleneck. AI data centres, meanwhile, require low-latency, lossless, high-throughput interconnections for large-scale GPU clusters. Against this backdrop, cloud and AI data centres urgently need to rely on 200G switches as a transitional step towards higher-performance 400G/800G networks, enabling smooth upgrades and long-term evolution. To learn how this can be achieved, explore FS AI switches and 400G solutions in this article.

Key Considerations for Choosing the Right AI/HPC Switches

When building a high-performance network for AI/HPC cloud data centres, selecting the right core and access switches is crucial. Each layer has distinct roles and technical priorities, requiring careful consideration of scalability, protocol support, and reliability, as well as space utilisation, energy efficiency, and cost.

Building Scalable Networks for Next-Generation AI/HPC

Achieving scalable networks in next-generation AI/HPC depends on a future-ready evolution strategy, where the deployment of 200G and 400G switches provides the essential foundation for success. At present, a spine-leaf architecture based on 200G switches provides an optimal balance between performance and cost. It not only meets the high-bandwidth, low-latency communication demands of large GPU clusters but also offers excellent lateral scalability through its modular design.

More importantly, investing in a 200G platform lays a solid foundation for future upgrades to 400G or even higher speeds. Many advanced 200G switch platforms already support seamless migration to 400G, allowing bandwidth to be doubled in stages simply by replacing optical modules and cables rather than the entire switch. This approach protects existing investments and prevents disruptive architectural changes. The evolution from 200G to 400G allows enterprise AI computing networks to meet exponentially growing compute demands while preserving technological advancement and strong return on investment (ROI), making it a key factor for long-term scalability.

Enabling Stability and Flexibility with Advanced Protocol Support

Large-scale AI/HPC networks rely on advanced protocols to deliver both stability and flexibility. EVPN-VXLAN underpins flexibility, simplifying large-scale network management through automated deployment and overlay technologies while supporting seamless workload scaling and multi-tenant isolation. RoCEv2 drives performance by enabling ultra-low-latency remote direct memory access (RDMA), greatly improving GPU-to-GPU communication efficiency.

To meet RoCEv2's zero-packet-loss requirement, PFC and ECN work together: PFC functions like a microsecond-precise brake to prevent packet loss and ensure absolute transmission stability, while ECN intelligently monitors global traffic to relieve congestion at the source and avoid network jitter. By combining these protocols, the physical network is transformed into an intelligent and reliable high-performance computing platform, forming the essential foundation for sustained and efficient AI training. Therefore, you should consider 200G switches or other AI switches that support these protocols.

Meeting Demands with Low Latency and High Reliability

AI switches deliver nanosecond- or microsecond-level latency and high-density, high-speed ports to meet the demands of large-scale AI training and HPC workloads. Even microsecond delays can accumulate across thousands of GPUs, impacting efficiency and driving up costs. By providing ultra-low latency and high-throughput interconnections between GPUs, CPUs, and storage, AI switches enable fast data flow, scalable parallel computing, and reliable, efficient training performance. Choosing switches with the lowest latency and highest throughput allows enterprises to maximise performance and get the most out of their AI and HPC infrastructure.

At the same time, reliability and operational efficiency are equally critical for enterprises. 200G switches and other AI switches are designed with redundancy, hot-swappable power modules, and intelligent fan control to enable rapid failover and precise thermal management, preventing downtime or hardware failures from interrupting long-running training tasks. With Web GUI, CLI, and centralised management platforms, administrators can easily configure, monitor, and troubleshoot devices. Automation further streamlines bulk operations, reduces human errors, and enhances efficiency, ensuring stable operations for large-scale data centre environments.

Future-Ready 200G Switch for Cloud and AI Data Centres

Designed for modern cloud and AI workloads, the FS N8550-24CD8D 200G switch provides 24 x 200G QSFP56 ports along with 8 uplinks, delivering the bandwidth and low-latency connectivity required for large GPU clusters and massive east-west traffic. Its modular design, advanced Broadcom chipset, and support for EVPN-VXLAN and RoCEv2 protocols ensure both flexibility and performance, while enabling a smooth upgrade path toward 400G networks. Deploying the N8550-24CD8D allows enterprises to balance current performance needs with future scalability.

Key Features and Core Value:

High-Performance Chip: Powered by Broadcom BCM56780 Trident 4-X9, delivering up to 8 Tbps switching capacity for high-density, high-throughput environments.

Flexible High-Density Ports: 24× 200GbE QSFP56 ports (breakout to 2×100GbE/50GbE or 4×50GbE/25GbE) and 8× 400GbE QSFP-DD uplinks (breakout to 2×200GbE/100GbE/50GbE or 4×100GbE/50GbE/25GbE) for adaptable deployment and future scalability.

Advanced Data Centre Features: Runs on PicOS®, supporting MLAG and EVPN-VXLAN, as well as lossless Ethernet technologies including RoCEv2, PFC, ECN, and DLB, ideal for AI training workloads and distributed storage traffic.

End-to-End Automation: Integration with AmpCon-DC enables full lifecycle automation from Day 0 provisioning to Day 2+ operations, simplifying large-scale deployments.

Purpose-Built for Modern Fabrics: Optimised for Spine/Leaf architectures in AI clusters and HPC environments, providing a robust foundation for next-generation data centre core networks.

FS portfolio of 100G to 800G AI/HPC switches enables enterprises to build high-performance 400G/800G networks designed for modern cloud and AI workloads. With modular designs and PicOS® unified operating system, these switches allow seamless upgrades and smooth expansion, ensuring AI/HPC data centre networks remain scalable, reliable, and ready for future compute growth.

Seamless 400G Network Solutions Powered by 200G Switches

As enterprises look to scale their data centre networks to meet growing AI and cloud workloads, upgrading from existing 100G/200G infrastructures to 400G has become a critical step. FS provides solutions that leverage high-density 200G switches to enable smooth, cost-effective network evolution while ensuring high performance, low latency, and investment protection.

Smooth 100G/200G to 400G Network Upgrade Solution

This solution is based on the high-density FS N8550-24CD8D 200G switch and supports seamless upgrades to 400G. The N8550-24CD8D provides 8× 400G uplinks that can integrate smoothly with FS 400G core switches. Its 24× 200G QSFP56 downlink ports, each supporting 2× 100G breakout, ensure compatibility with existing 100G server links. This allows enterprises to plan progressive upgrades while protecting existing investments.

For medium to large-scale cloud data centre networks, the FS N9550-64D 400G switch can be deployed at the core layer. This 2U switch features the advanced Broadcom Tomahawk 4 chipset and 64× 400G QSFP-DD ports, delivering up to 51.2 Tbps switching capacity. Specifically designed for large-scale core deployments, it ensures the network can handle growing east-west traffic while providing capacity for future expansion.

100G/200G AI Storage Network Solution with 200G Switches

This solution leverages the N8550-24CD8D 200G switch to build a 100G/200G RoCEv2 network for AI workloads, providing high bandwidth, low latency, and zero packet loss.

Spine Layer: In standard deployments, the N9550-32D 400G switches with Broadcom Tomahawk 3 deliver 25.6 Tbps capacity and ultra-low latency. Its 32×400G ports support flexible 100G/200G breakout, ensuring high-bandwidth, lossless RoCEv2 connectivity between storage and compute for stable AI performance. In compact clusters, N8550-24CD8D itself can be used as both Leaf and Spine, reducing complexity and cost while maintaining performance.

Leaf Layer: The N8550-24CD8D offers 24× 200G QSFP56 ports that support breakout to 2× 100G, enabling high-density access to GPU and NVMe storage nodes. For broader adoption, 100G links can be used to ensure compatibility and cost-efficiency, while 200G links can be deployed for performance-critical nodes to provide higher bandwidth and reduce congestion.

Unified Operating System and Automated Management for Efficient Operations

FS enhances network visibility and operational efficiency through software-defined intelligent networks and an automated management platform.

Software-Defined Intelligent and Lossless Network

FS switches run PicOS®, integrating EVPN-VXLAN and RoCEv2 technologies to achieve zero packet loss and low-latency AI storage and cloud networking. With support for lossless network features such as PFC, ECN, and DLB, users can build large-scale, scalable overlay networks while ensuring efficient transmission of latency-sensitive traffic in distributed AI training or multi-tenant cloud environments. Customers can realise high-performance interconnection for AI storage networks and cloud data centres on a single 200G switch without deploying separate devices, maximising resource utilisation. FS has now launched PicOS-V, which runs the PicOS software switch in a hardware-emulated environment with 48×10G ports and 4×100G ports, allowing users to test L2 and L3 functionality at their own pace and easily explore the powerful features of PicOS without worrying about associated costs.

Automated Management Platform for Operational Excellence

FS 200G switch comes pre-installed with the PicOS® operating system, supporting high levels of programmability and automation, including MLAG, ZTP, NetConf/RESTCONF, sFlow, and the AmpCon-DC management platform.

The AmpCon-DC management platform manages PicOS® data centre switches to configure, monitor, perform preventive troubleshooting, and maintain high-performance networks, thereby improving resource utilisation and reducing operational costs. Enterprises can achieve fully automated operations and maintenance from Day 0 to Day 2+, improving management efficiency, saving labour costs, and shortening deployment cycles.

Conclusion

FS’s 200G switch, along with its end-to-end network solutions, is designed to help enterprises overcome the challenges of bandwidth, latency, and scalability brought by cloud computing, AI training, and high-performance computing. With high-density multi-rate ports, lossless networking features, and an automated management platform, FS delivers an efficient, scalable, and resilient network environment while laying a solid foundation for future business growth and digital transformation.

Whether upgrading from 100G/200G to 400G or deploying high-performance AI and HPC clusters, FS provides reliable, future-ready solutions to help your data centre scale efficiently. Contact us to learn more!