In the AI era,
Network is a core competitive advantage
AI data centers require networks with significantly higher bandwidth and lower latency than previous generations to support training of massive AI models and real-time inference. With the recent surge in data transmission demand driven by large-scale AI workloads, existing 100G, 200G, and 400G networks are reaching their limits, leading companies to upgrade to next-generation ultra-high-speed networks such as 800G Ethernet. Amidst this trend, Arista's RoCE (RDMA over Converged Ethernet) technology is attracting attention as a solution that dramatically improves network performance in AI data centers. Arita RoCE provides low latency and high throughput at the network layer, making it essential for building high-performance distributed training and real-time inference environments for massive AI models.
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Problem
Why building and operating AI
network infrastructure is challenging.
Scalability and operational complexity.
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As AI models continue to grow in size, challenges are emerging in scaling network infrastructure performance to support them.
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Conventional data center networks are designed for general-purpose server-to-server traffic, whereas AI infrastructure requires ultra-high-speed connectivity among thousands of accelerator nodes.
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Latency and bottlenecks during distributed training can lead to degradation of overall system performance.
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Manually managing AI data center networks at the scale of thousands of nodes is impractical, making operational automation and real-time visibility critical challenges.
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AI Ops and intent-based networking approaches are required to reduce operational workload and shorten issue resolution times.
Energy efficiency and cost pressure.
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Network equipment vendors face challenges in reducing power consumption and costs.
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Within the limited power and space budgets of AI data centers, supporting a large number of high-speed ports is required, making performance-per-watt improvements in switch chips and optical modules critical.
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InfiniBand–dedicated interconnects deliver high performance but come with high costs for switches and NICs, as well as increased management complexity, creating barriers to enterprise adoption.
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Achieving comparable performance on Ethernet-based networks requires advanced technologies, including congestion control, PFC-based lossless configurations, and sophisticated monitoring.
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Service
Optimization services
DIA NEXUS focuses on.

AI workload–tailored design.
Guidelines for designing scalable, multi-tenant networks that interconnect hundreds or thousands of AI accelerators with high bandwidth, lossless performance, and low latency.
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