32 x 400Gb QSFP-DD Data Center Switch, 12.8Tbps, Sub-500ns Latency

SKU: CX732Q-N

$12,559.00 VAT excl.

  • 12.8 Tbps in 1U: 32×400G QSFP-DD ports for super-spine and spine layers.
  • Ultra-low latency: Sub-500 ns port-to-port.
  • Advanced telemetry: INT for real-time packet visibility and congestion control.
  • High availability: Hot-swappable redundant power and fan modules.
  • Open AsterNOS: Enterprise SONiC pre-installed with top-tier SAI support.
  • RoCE & AI fabrics: RoCEv2, BGP-EVPN, VXLAN, MLAG, PFC, ECN, DCBX, and multicast collectives.
  • Fully compatible: Works with all major GPUs and SmartNICs.
    SKU: CX732Q-N Category: Tags: , Brand:

    500 ns

    End to End Latency

    12.8 Tbps

    Switching Capacity

    70 MB

    Packet Buffer

    7600 Mpps

    Packet Forwarding Rate

    Designed for AI inference and training, high-performance computing (HPC), and cloud-scale storage, the Asteraix CX732Q-N delivers 12.8 Tbps switching capacity in a compact 1U form factor with 32×400G QSFP-DD. Built on Marvell Teralynx 7, this switch supports ultra-low latency (Sub-500 ns) and line-rate L2/L3 forwarding. Enterprise SONiC (AsterNOS) is pre-installed for RoCEv2, EVPN multi-homing, and cloud-native operation.

    Networking

    • Support for all leading collective communication libraries, including NCCL, RCCL, oneCCL, BCL, MPI, and Gloo
    • Optimize collective operations (Allreduce, Allgather, All-to-all, Broadcast) with built-in multicast
    • Support various network topologies, including spine-leaf, fat-tree, dragonfly, butterfly, 3D mesh/torus, hyper-x, and hypercube
    • Full RoCEv2 data path with PFC, ECN, DCBX, and INT for lossless AI fabrics
    • BGP-EVPN, VXLAN, and MLAG for scalable leaf-spine and multi-tenant deployments

    Use case scenarios

    • AI / ML training and inference clusters
    • High-performance computing (HPC) fabrics
    • Cloud and colocation spine-leaf networks
    • High-density data center top-of-rack (ToR)
    • Storage networks with RoCEv2 optimization
    Data Plane Ports (400G)32x400GbE QSFP-DDData Plane Ports (10G)2x10GbE SFP+
    Switch ASICMarvell TeralynxSwitching Capacity12.8Tbps
    Forwarding Rate7600MppsPacket Buffer70MB
    Control CPUBroadwell DE D-1508Control Plane Memory16GB DDR4, extensible to 96GB
    ARP Entries36KMac Addr. Entries44K
    IPv4 Prefix Routes72KIPv6 Prefix Routes36K
    Power Module1+1 Hot-swappableFAN Modules5+1 Hot-swappable
    Input Range200- 240V AC / 200-320V DCMax Power Consumption970Watt
    Rack Space1UManagement Ports1xUSB2.0, 1xConsole RJ45, 1xMGMT RJ45
    AirflowFront to RearDimension (HxWxD)44x440x515mm
    Op.Temperature0 - 40℃Op. Humidity5% - 90% (non-condensing)

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    Interface

    QSFP-DD

    Role

    Leaf-Spine

    Speed

    400G

    500 ns

    Ultra Low Latency

    12.8 Tbps

    Switching Capacity

    70 MB

    Packet Buffer

    ↓ 5% vs. IB

    Training Job
    Completion Time

    ↑ 27.5% vs. IB

    Inference
    Token Generation Rate
    Advanced Hardware Features

    Marvell Teralynx 7 Inside: Unleash Industry-Leading Performance & Ultra-Low Latency

    With Marvell Teralynx 7 at its core, 400G switches achieve blazing-fast sub-500ns latency—perfect for AI/ML, HPC, and NVMe where speed drives results.

    marvell-teralynx-7-chip-for-asterfusion-400g-switches-ultra-low-latency-performance

    Redundant Power Supplies & Smart Fans

    Boasting 32×400GbE QSFP-DD and 2×10GbE ports, the device supports interface splitting via breakout cables, which helps enhance the efficiency of network resource usage and accommodate diverse application scenarios.

    The dual 1+1 hot-pluggable power supplies ensure continuous operation by allowing replacement without system shutdown. Equipped with 5+1 hot-pluggable fan modules, the system delivers reliable cooling performance to maintain stability and efficiency under demanding workloads.

    Full RoCEv2 Support for Ultra-Low Latency & Lossless Networking

    Asteraix 400G switches deliver full RoCEv2 support with ultra-low latency and near-zero CPU overhead. Combined with PFC and ECN for advanced congestion control, it enables a true lossless network.

    Optimized Features for AI/ML/HPC

    Enterprise SONiC is optimized for AI/ML/HPC scenarios, supporting efficient and resilient path selection via WCMP (Weighted Cost Multi-Path), as well as technologies like Flowlet to enhance traffic management.

    HIGHLIGHT

    Network Monitoring & Visualization

    AsterNOS supports Node Exporter to send CPU, traffic, packet loss, latency, and RoCE congestion metrics to Prometheus. Paired with Grafana, it enables real-time, visual insight into network performance.

    HIGHLIGHT

    O&M in Minutes, Not Days

    Automate with Easy RoCE, ZTP, Python and Ansible,  SPAN / ERSPAN Monitoring & more—cutting config time, errors, and costs.

    400G Switch Outperforms InfiniBand in AI Inference with Higher TGR and Lower Latency

    In AI inference networks, the 400G switch delivers higher TGR (Token Generation Rate) and lower P90ITL (90th Percentile Inter-Token Latency) compared to InfiniBand, demonstrating faster inference speed and greater overall throughput performance.

    SONiC

    SONiC decouples the network operating system from switch hardware. Built on Linux with a containerized architecture, it programs switching ASICs through SAI (the Switch Abstraction Interface), so the…

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    RoCEv2

    RDMA over routable UDP/IP Ethernet (UDP 4791) for low-latency, low-CPU transfers in AI/HPC fabrics; depends on near-lossless Ethernet (PFC/ECN).

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    Teralynx 7
    Teralynx 7

    Marvell 3.2–12.8 Tbps programmable switch ASIC for 100G–400G leaf/spine—~500 ns latency, large buffers, AI/HPC fabrics.

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