Full English Description for Cisco N9K-C9332D-GX2B
1. Part Number Naming Breakdown
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N9K: Cisco Nexus 9000 cloud-scale fixed data center switch product family
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C9332D: 32-port QSFP-DD high-density dual-purpose leaf/spine fixed chassis of Nexus 9300 GX2 second-gen platform
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D: QSFP-DD dual-density high-speed optical interface, native 400G, full multi-speed breakout support
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GX2: Second-generation GX Cloud Scale ASIC (12.8Tbps switching slice), expanded TCAM/route scale, 120MB large shared packet buffer, optimized RoCEv2 lossless transport for AI/HPC, dual NX-OS standalone / ACI intent fabric dual operating modes
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B: ACI-optimized factory port profile preset, default leaf port partitioning (24 downlinks + 8 fabric uplinks), pre-tuned APIC discovery & POAP zero-touch automation workflows
2. Short Sales One-Liner (For BOM, Quotation & Datasheet Header)
Cisco Nexus N9K-C9332D-GX2B, 1RU rack-mount flexible dual-purpose 400G leaf/spine data center switch, 32 universal breakout-capable QSFP-DD 400G/200G/100G/40G ports plus 2 × 1/10G SFP+ auxiliary downlink ports, 12.8 Tbps non-blocking switching capacity, dual hot-swappable 1500W Platinum-efficiency redundant power supplies and six 5+1 N+1 variable-speed fan trays, dual-mode standalone NX-OS or native ACI fabric operation, purpose-built for AI GPU training clusters, hyperscale leaf-spine core spine interconnection, multi-pod ACI fabrics, high-performance HPC parallel computing and media streaming 400G data center deployments.
3. Complete Product Overview Paragraph
The Cisco Nexus N9K-C9332D-GX2B is a compact 1RU fixed-port Layer 2/3 all-optical flexible leaf/spine switch built on the second-gen GX Cloud Scale ASIC, a factory ACI-tuned variant optimized for both top-of-rack 400G leaf aggregation and core fabric spine roles in enterprise, hyperscale cloud, AI/ML training, HPC and Cisco ACI Application Centric Infrastructure multi-pod environmentsCisco. It delivers a high-density flexible port layout with 32 universal QSFP-DD high-speed optical ports paired with two auxiliary 1/10G SFP+ ports for low-speed management or secondary server downlinks, supporting full wire-rate non-blocking forwarding with total switching bandwidth of 12.8 Tbps and forwarding throughput of 5.77 Bpps for minimum 64-byte Ethernet frames.
All 32 QSFP-DD ports support native 400G, backward-compatible 200G (QSFP56), 100G (QSFP28) and 40G (QSFP+) transceivers, plus full independent breakout configurations per port: 2×200G, 4×100G, 4×50G, 4×25G, 4×10G, enabling flexible logical port scaling up to 128 × 100G logical links within one 1RU chassisCisco. Ports 25–32 (green-marked fabric uplink bank) support wire-rate 128/256-bit MACsec & CloudSec encryption; optical power draw limits apply when MACsec is enabled to support high-power coherent DCO transceiversCisco. The two SFP+ auxiliary ports operate at auto-negotiated 1G/10G for out-of-band auxiliary server or storage access.
Powered by GX2-series Cloud Scale silicon, this platform features a massive 120MB shared dynamic packet buffer to absorb heavy burst traffic from GPU parallel workloads, drastically expanded MAC address table, ultra-large IPv4/IPv6 LPM TCAM route scale, native hardware acceleration for EVPN/VXLAN overlay routing, and deeply optimized RoCEv2 lossless congestion control for ultra-low-latency AI training clusters. High-performance unsampled streaming telemetry integrates fully with Cisco Tetration Analytics for end-to-end full-fabric observability, alongside expanded VRF, multicast and microsegmentation policy capacity for multi-tenant hyperscale isolationCisco. As the GX2B ACI-specialized variant, it ships with factory preloaded ACI port profiles: default leaf partition assigns ports 1–24 as server downlinks and ports 25–32 as inter-spine fabric uplinks, with accelerated APIC controller discovery and streamlined POAP zero-touch provisioning to cut ACI fabric deployment time versus generic GX2 modelsCisco.
The chassis integrates dual independent out-of-band management interfaces: dedicated 10/100/1000BASE-T RJ45 Ethernet and SFP multi-rate fiber remote management uplink ports, plus mini-USB RS232 local console and single USB 2.0 Type-A port to support offline configuration backup and firmware upgrades. Dual hot-swappable 1500W power supplies and six N+1 redundant fan trays eliminate single points of hardware failure, with two standardized airflow variants (PI port-side intake / PE port-side exhaust) selectable at order time; all power and fan modules must match airflow direction during operation to avoid thermal overloadCisco. This switch supports two independent operating modes: modular standalone Cisco NX-OS for traditional routed core/leaf data center architectures, or native ACI fabric mode for policy-driven automated multi-tenant cloud infrastructure. Its compact 1RU 400G flexible dual-purpose design maximizes rack density for mixed leaf/spine terabit-scale fabric deployments and modern AI GPU workload racksCisco.
4. Detailed Hardware Interface Specifications
Universal QSFP-DD High-Speed Ports (32 × Full Breakout Multi-Rate Slots)
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Native supported line rates: 400GBASE, 200G QSFP56, 100G QSFP28, 40G QSFP+
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Per-port breakout options: 2×200G, 4×100G, 4×50G, 4×25G, 4×10G via breakout cables & QSA adapters
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MACsec capability: Ports 25–32 (8 fabric uplink ports) support wire-rate 128/256-bit MACsec & CloudSec encryption
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Optical power constraint rules for MACsec deployment:
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All 8 MACsec ports enabled: Max 12W transceivers only
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Up to 4 MACsec ports enabled: Support high-power >12W coherent DCO optics
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MACsec disabled: All 8 green ports support full-power high-speed transceivers
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Compatible transceivers: QSFP-DD 400G DR4/FR4/LR4/ZR, QSFP56 200G, QSFP28 100G, QSFP+ 40G, passive QSFP-DD DAC twinax cables
Auxiliary SFP+ Ports (2 × Auto-Sensing 1/10G Slots)
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Auto-negotiated speeds: 1 Gbps, 10 Gbps
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Use cases: Auxiliary low-speed server downlinks, secondary storage access, backup management links
Management & Auxiliary Ports
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1 × 10/100/1000BASE-T RJ45 out-of-band management port
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1 × SFP multi-rate fiber remote out-of-band management uplink port
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1 × Mini-USB RS232 console port for local CLI access
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1 × USB 2.0 Type-A port for firmware upload, configuration backup and POAP deployment
Power & Cooling
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Dual hot-swappable power supply options (1+1 load-sharing redundancy, non-disruptive hot-swap):
1500W AC PI (port intake), 1500W AC PE (port exhaust), 1100W DC PI, 2000W HVDC PI
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Six variable-speed fan trays (5+1 N+1 redundancy):
NXA-SFAN-35CFM-PI (burgundy label, port-side intake)
NXA-SFAN-35CFM-PE (blue label, port-side exhaust)
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Power efficiency: 80Plus Platinum certified
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Operating temperature range: 0°C ~ 40°C full load; non-operating storage: -40°C ~ 70°C
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Humidity tolerance: 5%–95% non-condensing; max operating altitude: 4000 meters
Physical Form Factor
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Dimensions: 1RU standard 19-inch rack chassis
Height: 4.37 cm, Width: 43.94 cm, Depth: 64.50 cm (fully populated)
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Weight: 12.7 kg fully populated (dual PSUs + full fan set)
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Compliance: RoHS-6, NEBS Level 3, global safety, EMC and telecom regulatory certifications
Core Hardware Performance Benchmarks
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Total switching capacity: 12.8 Tbps full duplex non-blocking
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Forwarding rate: 5.77 Bpps (64-byte frame wire-rate)
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Shared dynamic packet buffer: 120MB for cross-port burst traffic absorption
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MAC address table size: Expanded GX2-scale large MAC forwarding entry pool
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IPv4 / IPv6 unicast LPM route table capacity: Ultra-large TCAM scale for hyperscale multi-pod fabrics
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VLAN support: Up to 4094 standard IEEE 802.1Q tagged VLANs
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Maximum isolated VRF instances: 16,000 multi-tenant virtual routing tables
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System memory: 32GB DRAM + 128GB high-capacity onboard SSD storage
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Typical cut-through switching latency: Less than 1 microsecond for minimum-size Ethernet frames
5. Core Software Feature Suite (Dual NX-OS / ACI Operating Modes)
Layer 2 & Layer 3 Routing
Static routing, RIP, OSPFv2/v3, EIGRP, full BGP routing suite, VRRP, PIM sparse/dense multicast; FCoE not supported on this pure high-speed optical chassis
Cloud Fabric Overlay
Hardware-accelerated EVPN/VXLAN symmetric & asymmetric routing, multi-tenant VXLAN segmentation, fabric multicast optimization, advanced lossless RoCEv2 congestion control optimized for GPU/AI/HPC low-latency training workload clusters
Enterprise & Fabric Security
802.1X port authentication, MAB MAC bypass authentication, DHCP Snooping, Dynamic ARP Inspection, CoPP control-plane policing, hardware wire-rate 128/256-bit MACsec + CloudSec encryption on 8 dedicated fabric ports, TrustSec SGT zero-trust micro-segmentation for core fabric isolation
Monitoring & Telemetry
High-performance sampled/unsampled IPFIX streaming telemetry, ERSPAN remote port mirroring, local SPAN/VSPAN, real-time per-port/per-queue buffer utilization visibility, full Cisco Tetration flow export compatibility for end-to-end fabric analytics
Exclusive GX2B ACI Optimized Special Features
Factory predefined ACI leaf port partition profile (24 downlinks + 8 fabric uplinks), accelerated APIC controller discovery logic, streamlined ACI POAP zero-touch provisioning workflow, built-in inter-pod IPN link validation templates, preconfigured breakout port mapping for ACI multi-pod deployments
Automation & DevOps
POAP zero-touch provisioning, NX-API REST JSON/XML APIs, embedded Linux Bash shell, native Python scripting, Ansible/Puppet/Chef full integration, containerized application hosting, hot patching and ISSU in-service software upgrade without core fabric traffic downtime
High Availability
Modular fault-isolated process architecture, stateful process restart, redundant control plane, hot-swappable power supply and fan FRUs for non-disruptive field maintenance
6. Typical Deployment Use Cases
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Dual-purpose flexible leaf or core spine switch for large-scale 100G/400G leaf-spine data center fabrics
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Low-latency aggregation leaf switch for 400G GPU virtualization and large-scale AI model training clusters
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Inter-pod border spine switch connecting multiple independent ACI multi-pod fabric domains
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Dedicated high-bandwidth core node for hyperscale IaaS/PaaS multi-tenant cloud environments
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Professional media network core switch for 4K/8K ultra-high-bitrate streaming and large media asset workloads
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5G edge NFV aggregation switch supporting high-speed backhaul 100G/400G optical links
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HPC parallel computing cluster leaf/spine with breakout capability to support mixed 25G/100G GPU interconnect speeds
7. Datasheet Short Summary Paragraph
The Cisco Nexus N9K-C9332D-GX2B is a compact 1RU ACI-specialized GX2-generation flexible dual-purpose 400G leaf/spine cloud data center switch equipped with 32 breakout-capable universal QSFP-DD 400G/200G/100G fabric ports plus two auxiliary 1/10G SFP+ ports, delivering 12.8 Tbps non-blocking switching performance with dual 1500W Platinum redundant power and six 5+1 redundant fan trays. Supporting both standalone modular NX-OS and native ACI intent-based fabric operational modes, it features the second-gen GX Cloud Scale ASIC with a large 120MB packet buffer, ultra-expanded L2/L3 TCAM routing scale, wire-rate MACsec/CloudSec encryption on dedicated fabric ports and optimized RoCEv2 lossless transport, plus exclusive factory ACI automation tuning, serving as a high-density flexible terabit leaf/spine aggregation switch for hyperscale cloud, AI/GPU HPC, multi-pod ACI fabrics and professional media/5G edge networking built around 100G/400G high-speed optical fabric infrastructure.
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