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Independent analysis validating Cisco’s leadership in AI Ethernet networking and the competitive advantages of the Silicon One and Nexus portfolio.
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Cisco AI Networking in Data Centers
Seamless by design. End to end. Every workload.
Accelerate AI at scale with secure, intelligent Ethernet networking that boosts GPU utilization, improves power efficiency, simplifies operations, and speeds job completion.
AI networking that scales with your ambition
Cisco delivers the industry’s most complete AI networking portfolio for data centers—from silicon to software. With Nexus One unified operations, Silicon One programmable ASICs up to 102.4 Tbps, and a full range of 400G to 1.6T switches and optics, Cisco eliminates the networking bottleneck so your AI workloads run faster, more efficiently, and more securely. Whether you’re building an AI factory or scaling sovereign cloud infrastructure, Cisco AI networking is designed to maximize GPU utilization and accelerate time to insight.
Three pillars of Cisco AI networking
Cisco’s approach to AI networking in data centers is built on three foundational pillars that work together to deliver unmatched performance, visibility, and security.
Intelligent AI Networking
Cisco Nexus One unifies intelligence from silicon to software, delivering a single operational model that spans the entire AI networking stack. Purpose-built for GPU-intensive workloads with lossless Ethernet and adaptive load balancing.
Explore Nexus One ›
Operations Reimagined
AgenticOps eliminates blind spots and bottlenecks with AI-driven automation that proactively detects, diagnoses, and resolves issues before they impact GPU clusters or training jobs.
Explore AgenticOps ›
Built-in Trust for AI
Security is woven into every layer of the AI networking stack—from quantum-safe encryption and zero-trust segmentation to real-time threat detection across data pipelines and model traffic.
Explore AI Defense ›The AI networking portfolio
From unified operations to programmable silicon and high-speed optics, Cisco offers the most complete set of AI networking solutions for data centers.
Cisco Nexus One
Unified operations platform that brings together management, automation, and assurance for the entire AI networking fabric in a single pane of glass.
Explore Nexus One ›Cisco Silicon One
Programmable, unified silicon architecture delivering up to 102.4 Tbps of throughput—powering switches, routers, and AI networking at hyperscale.
Explore Silicon One ›Nexus 9000 Series
High-performance data center switches with 400G to 1.6T connectivity, purpose-built for AI training clusters and inference workloads.
Explore Nexus 9000 ›Nexus 9100 Series
Optimized for neocloud and sovereign cloud deployments, delivering the density and performance required for large-scale AI infrastructure.
Explore Nexus 9100 ›
Cisco AI Networking, brought to life
Build and operate AI networks with a cohesive set of solutions that deliver the performance, scale, and operational consistency needed to run AI at any size.
Unified Operations
Cisco Nexus One
Deploy AI faster and securely with Cisco Nexus One: A unified solution with network intelligence from silicon to software—operationalized through Nexus Dashboard on-premises and Hyperfabric in the cloud.
Explore Nexus One ›Silicon Advantage
Cisco Silicon One
Power AI at scale with a unified, programmable network built for flexibility—delivering exceptional performance, massive capacity up to 102.4 Tbps, and freedom to deploy AI your way.
Explore Silicon One ›High-Performance Systems
Cisco N9000 Series Switches
Run AI fabrics on high-density switches powered by Cisco silicon. Secure 400G–1.6T connectivity, AI-optimized traffic handling, and power-efficient designs built for demanding workloads.
Explore Nexus 9000 ›Cisco N9100 Series Switches
Scale your neocloud or sovereign cloud with NCP-compliant architecture, NX-OS or SONiC flexibility, and unified operations through Cisco Nexus One.
Explore Nexus 9100 ›Cisco 8000 Series
Power backbone and AI networks with scalable switches that deliver secure performance, open networking flexibility, and operational simplicity at high speed and scale.
Explore 8000 Series ›Industry-Leading Optics
Cisco Optics
Enable high-speed, reliable AI networking with 400G to 1.6T optics powered by silicon photonics, delivering validated, field-programmable performance at scale.
Explore Optics ›Software Innovation
Cisco NX-OS
Deliver high-performance AI networking with low latency, lossless Ethernet, and intelligent congestion management—plus enterprise-grade automation and security.
Explore NX-OS ›SONiC NOS
Adopt an open, modular network OS on future-ready hardware to support disaggregated designs, with containerized services, flexible management tools, and rich API integration.
Cisco Application Centric Infrastructure (ACI)
Operate AI-ready data centers with agility—automate networking, enforce microsegmentation, and apply zero-trust security consistently.
Explore ACI ›Cloud-Native Networking
Isovalent Enterprise Platform
Run reliable, secure, cloud-native networking for Kubernetes at scale across any environment, with broad distribution compatibility, regulatory support, and always-on enterprise backing.
Complete the AI networking stack
Cisco 8000 Series
High-performance routing platform built on Silicon One for backbone and AI network interconnects, delivering industry-leading density and power efficiency for large-scale deployments.
Explore 8000 Series ›
Cisco Optics
Comprehensive optics portfolio spanning 400G to 1.6T, including coherent pluggables, designed for the bandwidth demands of AI training and inference at scale.
Explore Optics ›
NX-OS, SONiC NOS & ACI
Flexible network operating system choices—from Cisco NX-OS and open SONiC to intent-based ACI—giving you the operational model that fits your AI infrastructure strategy.
Explore NX-OS › Explore ACI ›Silicon Advantage
Cisco Silicon One: purpose-built for AI
Cisco Silicon One is the industry’s first unified silicon architecture, delivering breakthrough performance for AI networking. With throughput up to 102.4 Tbps, it powers the Nexus switch family, 8000 Series routers, and next-generation optics—all on a single programmable platform.
- Up to 102.4 Tbps switching capacity
- Unified architecture across switches and routers
- Industry-leading power efficiency for AI workloads
Built with an ecosystem you trust
Cisco AI networking is validated and optimized to work with industry-leading AI infrastructure partners. From GPU accelerators to storage and software, Cisco ensures seamless interoperability across the entire AI stack.
Technology Partners
NVIDIA
Validated AI networking designs optimized for NVIDIA GPU clusters, ensuring maximum GPU utilization and training performance across large-scale deployments.
Intel
Joint solutions combining Intel accelerators with Cisco networking for enterprise AI inference and mixed workload environments.
AMD
Optimized networking for AMD Instinct accelerators, enabling high-bandwidth, low-latency connectivity for AI training and HPC workloads.
VAST Data
Integrated data platform solutions that combine VAST Data’s AI-native storage with Cisco’s high-performance networking for seamless data pipelines.
NetApp
Joint architectures for AI data management, combining NetApp intelligent storage with Cisco networking for optimized data throughput.
DDN
High-performance parallel storage integrated with Cisco AI networking for the most demanding AI training and data lake environments.
What the analysts are saying
theCUBE
In-depth coverage of Cisco’s AI networking strategy, featuring executive insights on how Ethernet is becoming the fabric of choice for AI data centers.
IDC
Market research highlighting Cisco’s position in the AI infrastructure landscape and the growing demand for high-performance Ethernet in AI data centers.
Moor Insights & Strategy
Strategic analysis of Cisco’s unified approach to AI networking and how Nexus One and Silicon One differentiate in the competitive landscape.
Frequently Asked Questions
Why choose Ethernet over InfiniBand for AI networking?
Ethernet offers an open, standards-based approach that avoids vendor lock-in, scales to massive cluster sizes, and leverages existing operational expertise. Cisco’s AI-optimized Ethernet delivers lossless performance with adaptive load balancing, matching InfiniBand throughput while providing greater flexibility, broader ecosystem support, and lower total cost of ownership.
What is Cisco Nexus One?
Cisco Nexus One is a unified operations platform that brings together management, automation, and assurance for AI networking fabrics. It provides a single operational model from silicon to software, simplifying Day 0 through Day N operations and enabling AgenticOps for proactive, AI-driven network management.
How does Cisco AI networking improve GPU utilization?
Cisco AI networking uses lossless Ethernet, intelligent load balancing, and congestion-aware scheduling to minimize network-induced idle time on GPUs. By eliminating bottlenecks in the fabric, more GPU cycles are spent on actual compute rather than waiting for data, directly accelerating AI training job completion times.
What network operating systems does Cisco support for AI?
Cisco offers three NOS options for AI networking: Cisco NX-OS for feature-rich enterprise environments, SONiC for open and disaggregated deployments favored by hyperscalers, and ACI for intent-based automation and policy-driven fabrics. All three are supported on Nexus switches powered by Silicon One.
Ready to build your AI network?
From silicon to software, our team can help you design and deploy Cisco AI networking solutions that maximize GPU utilization and accelerate your AI initiatives.
- High-performance 400G to 1.6T Ethernet for AI clusters
- Unified operations with Cisco Nexus One
- Validated designs with NVIDIA, Intel, AMD, and storage partners
- Response from a certified Cisco specialist within one business day