Cisco Nexus 9332D-GX2B Switch
A 400G fixed switch engineered for AI/ML design requirements — delivering advanced flow control, consistently low latency, and rich telemetry for demanding machine learning and GPU cluster workloads.
Product Overview
32x 400G Ports
32 line-rate 400G QSFP-DD ports in a compact 1RU form factor — ideal for leaf and spine roles in 400G AI/ML fabrics.
Ultra-Low Latency
Optimized for latency-sensitive AI/ML workloads — cut-through forwarding and consistent low-latency performance at all traffic levels.
Advanced Flow Control
Priority Flow Control (PFC), Enhanced Transmission Selection (ETS), and DCBX support lossless transport for RoCE and RDMA traffic.
Rich Telemetry
Streaming telemetry, WRED statistics, ECN tracking, and per-flow visibility give operations teams the data to detect and fix congestion fast.
Line-Rate Security
Hardware MACsec on all 400G ports ensures data confidentiality and integrity without impacting switching performance.
Non-Stop Operations
ISSU, SMU hot patches, vPC, and N+1 redundant PSUs and fans keep AI training jobs running through planned maintenance.
Features and Benefits
Precision-built for AI/ML data center fabrics.
The Nexus 9332D-GX2B is designed to eliminate the networking bottlenecks that limit GPU utilization — delivering the flow control, low latency, and visibility that AI/ML workloads demand.
GPU Cluster Ready
Lossless RoCEv2 fabric support enables efficient GPU-to-GPU communication across distributed AI training workloads.
Adaptive Routing
Adaptive load balancing distributes traffic across multiple equal-cost paths to optimize throughput and prevent hot-spots.
VXLAN BGP EVPN
Standards-based overlay networking with multisite BGP EVPN support for seamless multi-data-center AI/ML fabrics.
Day-0 Automation
Power-on Auto Provisioning (POAP), Ansible, Terraform, and RESTCONF/NETCONF APIs automate deployment and configuration at scale.
Nexus Dashboard Insights
Nexus Dashboard Insights provides per-flow visibility, anomaly detection, and change tracking across the entire fabric.
Scale-Out Design
128-way ECMP routing enables fat-tree and spine-leaf designs that scale horizontally without creating bottlenecks.
Specifications
Performance
Ports & Interfaces
Security
Physical
Documentation
Nexus 9300-GX2 Series
View the full 400G portfolio including the 9332D-GX2B and related GX2 Series switches.
View 400G Portfolio ›NX-OS Brochure
Open, Secure, and Extensible — the operating system powering all Cisco Nexus 9000 switches.
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