CN5000 Omni-Path® Director Class Switch

Maximize Performance and Efficiency at Scale with the 576-Port CN5000 Director Class Switch (DCS)

As AI and HPC environments scale to thousands, or even hundreds of thousands of nodes, network infrastructure must evolve to meet the demands of modern workloads. The Cornelis CN5000 Omni-Path® DCS, with up to 576 ports of 400Gbps bi-directional bandwidth, delivers the scale and density required to eliminate architectural bottlenecks and unlock full system potential—accelerating AI model training, simulation throughput, and time-to-insight across AI and HPC workloads.

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  • Front view of the Cornelis CN5000 Omni-Path Director Class Switch
    Drastically Improve Your Scalability
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  • Revolutionizing AI & HPC Infrastructure with 400G Ultra-Dense Networking for Scalable Acceleration

    Purpose-Built for Massive Scale and Density

    The CN5000 DCS enables hyperscale compute fabrics by consolidating network connectivity in a single, high-density chassis. With support for thousands of nodes through fewer switch tiers, this 576-port powerhouse reduces cabling complexity, improves reliability, and drives down latency. Fewer switches, fewer hops, and fewer points of failure—all while achieving unmatched scale with uncompromised efficiency.

    Optimized for AI and HPC at Unprecedented Scale

    Supporting massive data flows for large-scale AI training and inference, and scientific computing, the CN5000 delivers consistent ultra-low latency and maximum throughput. Its high port count allows for flatter, more efficient topologies—ideal for GPU-heavy workloads, multi-node AI pipelines, and tightly coupled HPC simulations. This means faster time-to-results and more effective use of compute resources.

    Lower TCO Through Intelligent Consolidation

    With 576-ports per switch, the CN5000 DCS reduces the need for extensive switching infrastructure, lowering capital expenditures, power consumption, and operational complexity. Intelligent traffic flow management and congestion control ensure efficient resource utilization and extend the longevity of your infrastructure investments.

    Built-In Reliability, Resilience and Flexibility

    Designed for always-on, mission-critical deployments, the CN5000 DCS offers enterprise-class resilience and operational continuity. The CN5000’s built-in error correction, redundant hot-swappable power supplies and cooling modules, fault tolerance, and dynamic network function allocation ensure consistent, high-availability operation. Its adaptability across diverse workloads makes it a strategic backbone for evolving compute demands—whether you're running complex AI models, fluid dynamics simulations, or large-scale genomics pipelines.

    Industry-Leading Telemetry for Scalable Intelligence

    At massive scale, network visibility is essential. The CN5000 delivers fine-grained telemetry and real-time traffic analytics, empowering operators to detect congestion, rebalance workloads, and optimize performance. These capabilities scale effortlessly with infrastructure growth, providing actionable insights and proactive control across thousands of endpoints.

    Complete, Scalable Networking Ecosystem

    As part of the Cornelis CN5000 product family, the DCS integrates seamlessly with our Switch, SuperNIC, optical and copper cabling, and open-source software stack (OPX). Together, they form a comprehensive, scalable fabric that meets the connectivity needs of the most demanding AI and HPC environments.

    Benefits

    • Maximum of 576 ports, in 48-port increments, each providing 400Gbps performance

    • Scales up to 230.4 Tbps aggregate bandwidth

    • Optimization for message rate and latency

    • Two-tier fat tree internal interconnect topology

    • Virtual lanes (VLs): Configurable from one to four VLs plus one management VL

    • Configurable MTU size of 2 KB, 4 KB, 8 KB, or 10 KB

    • Maximum multicast table size: 16,384 entries

    • Maximum unicast table size: 49,152 entries (linear LIDs)

    • Maximum unicast table size: 330,000 entries (hierarchical LIDs)

    • Fine grained, telemetry-based dynamic adaptive routing (FGAR)

    • Static Dispersive Routing (SDR)

    • FGAR or SDR selectable per packet

    • Innovative traffic categorization to control incast-prone applications

    • QSFP112 Quad Small Form Factor Pluggable cabling

    • Low-latency bit error recovery and optional correction

    • Enhanced congestion control that can throttle adapter injection

    • Rich Quality of Service (QoS) controls

    • Backwards compatible with previous generation Omni-Path 100G fabric

    • OpenBMC-based chassis management

    • Security (Secure key EEPROM, Secure Boot)

    • System design supports full redundancy

    • Options for air and liquid cooling

    Air-CooledLiquid-Cooled
    400G port increment (min)4848
    400G port total (max)576576
    Total System Bandwidth (bidirectional)57.6 TB/s57.6 TB/s
    Chassis Height (+ Support Tray)17U19U
    Dimensions (W x H x D) [in (cm)]17.6 x 29.75 x 28
    (44.7 x 75.6 x 71.1)
    17.6 x 33.25 x 29
    (44.7 x 84.5 x 73.7)
    Weight (Empty FRU Chassis)160 lb (73 kg)203 lb (92 kg)
    Weight (Base 1N: All fans, both Management Modules, N+1 PSUs)292 lb (133 kg)335 lb (152 kg)
    Weight (fully configured, N+1 PSUs)616 lb (280 kg)665 lb (302 kg)
    Leaf Modules (max)1212
    Spine Modules (max)66
    Fan Modules61
    Management Modules22
    Power Supplies (min / DC / AC redundancy)7 / 8 / 167 / 8 / 16
    Power (kW AC, typical)* with DSP optics21.921.1
    Power (kw AC, max)** with DSP optics22.622.5

    * Typical: full configuration of DSP-based optical transceiver or AOCs (all estimated)
    ** Max: full configuration of DSP-based optical transceivers or AOCs worst process/temp/voltage (all estimated)

    Safety

    US/Canada

    FCC part 15, Supbart B, Class A

    CAN ICES-3 (A)/NMB-3(A)

    Europe/International

    EN55032 (CISPR32)

    EN55035 (CISPR35)

    EN61000-3-2

    EN61000-3-3

    Japan

    VCCI, Class A

    New Zealand/
    Australia

    AS/NZS CISPR 32, Class A

    Korea

    Emissions: KS C 9832, Class A

    Immunity: KS C 9835

    Taiwan

    BSMI (CNS 15936), Class A

    Operating Conditions

    Temperature

    Operating: 10 to 35˚C, (up to 900m above sea level. Temperature is derated 1˚C per 175m above 900m)

    Storage: -40° to 70˚C

    Humidity

    Operating: 5% to 85% non-condensing

    Storage: 5% to 95% non-condensing

    Altitude

    Operating: 0-3,000m (Temperature derating 1˚C/175m above 900m)

    Non-operating: 0-12,000m

    Shock

    Unpackaged: Half-sine, 2g, 11ms, 300 pulses total

    Packaged: 9in. vertical and rotational drop

    Vibration

    Unpackaged: 5-500 Hz, 2.2Gmms random, 30 min total

    Packaged: 5-500 Hz, 1.09 Gmms random, 3 hr total

    RoHs / REACH

    Complies with RoHS Directive 2011/65/EU and the subsequent RoHS Directive (EU) 2015/863 of the European Parliament

    Complies with the REACH Regulation (EC) No 1907/2006

    Emissions/Immunity

    US/Canada

    FCC Part 15, Subpart B, Class A,
    ICES-3(A)/NMB-3(A)

    Europe

    EN55032 Class A, EN55035, EN55024

    Japan

    VCCI, Class A

    AS/NZ

    AS/NZ CISPR 32, Class A

    Korea

    RRA/KC (KN32, KN35), Class A

    Taiwan

    BSMI (CNS 13438 Class A, CNS 15663)

    Miscellaneous

    Country of Origin

    USA

    Non-Volatile Memories

    Statement of volatility available upon request

    Encryption

    None

    AI Solutions

    From training large language models and powering agentic AI frameworks, to real-time fraud detection in finance and computer vision in autonomous systems - CN5000 Omni-Path AI solutions deliver the high-performance, lossless networking foundation that next-generation AI demands.

    HPC Solutions

    Push the boundaries of scientific discovery and engineering innovation with CN5000 Omni-Path-based HPC solutions. From advancing climate modeling and seismic analysis, to accelerating simulation and design in aerospace and automotive, and enabling complex genomic research in life sciences, CN5000 Omni-Path solutions power breakthrough results—faster, smarter, and at scale.

    Explore the CN5000 Product Family