• Cisco N9K-C9332D-H2R 32-port 400G QSFP-DD switch with deep buffer
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Cisco

Cisco N9K-C9332D-H2R | Nexus 9300 32-Port 400G QSFP-DD Switch, Deep Buffer, 8GB HBM

N9K-C9332D-H2R

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Description

The Cisco Nexus 9332D-H2R is a high-performance 1RU data center switch designed for hyperscale AI/ML workloads and modern leaf-spine architectures. Featuring 32 ports of 400 Gigabit Ethernet with QSFP-DD interfaces, it delivers 25.6 Tbps of total bandwidth and includes unique deep-buffer capability with 8GB of High Bandwidth Memory to handle microburst traffic patterns. Backward-compatible with 40G, 100G, and 200G speeds via breakout cables, this switch supports both NX-OS and ACI operating modes with comprehensive Layer 2 and Layer 3 features.

Features

Cisco Cloud Scale ASIC technology for wire-speed performance at 400G
- Deep packet buffering: 80MB on-die + 8GB HBM for microburst absorption
- Full MACsec encryption on all 32 ports for data-in-motion security
- Precision Time Protocol (PTP) with Class C accuracy for telecom and media applications
- Synchronous Ethernet for high-accuracy frequency and time distribution
- VxLAN overlay network support for multi-tenant data centers
- Layer 2 features: VLANs, STP, LACP, port channels, QoS
- Layer 3 routing: OSPF, BGP, EIGRP, PIM, HSRP, VRRP (requires license)
- Comprehensive telemetry and analytics via streaming telemetry
- Zero-Touch Provisioning (ZTP) for rapid deployment
- Python API and scripting for automation and orchestration
- Cisco Nexus Dashboard integration for visibility, insights, and fabric management
- Hot-swappable redundant power supplies and fan modules (N+1)
- Energy-efficient design with adaptive cooling
- Support for RoCEv2 and NVMe-oF for storage network convergence

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

32 x 400 Gigabit Ethernet QSFP-DD ports
- Switching capacity: 25.6 Tbps bandwidth
- Forwarding rate: 4.98 billion packets per second (bpps)
- Packet buffer: 80MB on-die buffer + 8GB High Bandwidth Memory (HBM)
- MACsec encryption capability on all 32 ports (AES-256)
- Memory: 32GB RAM installed
- Form factor: 1RU rackmount chassis
- Weight: 31.54 lb (14.30 kg)
- Power supply: Dual hot-swappable 2000W AC/DC/HVDC PSU (redundant)
- Maximum power consumption: 1900W
- Fan redundancy: 6 hot-swappable fan modules (N+1 redundancy)
- Breakout support: 10/25/40/50/100/200 Gbps speeds
- Operating systems: Cisco NX-OS or ACI mode
- Management: CLI, web interface, SNMP, Cisco Nexus Dashboard
- Precision Time Protocol (PTP) with Class C timing accuracy

FAQs

Q: What makes the deep-buffer capability important for AI/ML workloads?
A: The 8GB High Bandwidth Memory (HBM) combined with 80MB on-die buffer enables the N9K-C9332D-H2R to absorb traffic microbursts common in distributed AI training and high-performance computing environments, preventing packet loss and maintaining consistent throughput during congestion events.

Q: Can this switch run in both standalone NX-OS and Cisco ACI modes?
A: Yes, the Nexus 9332D-H2R supports both Cisco NX-OS standalone mode and Cisco Application Centric Infrastructure (ACI) mode, allowing flexible deployment in traditional data center networks or software-defined ACI fabrics.

Q: What licensing is required for Layer 3 routing features?
A: The switch includes comprehensive Layer 2 features by default. To enable Layer 3 IP unicast and multicast routing, Nexus Data Broker, and advanced automation, you need to install Cisco Data Center Network (DCN) Premier, Advantage, or Essentials subscription licenses (XF2 class).

Q: Is this switch compatible with existing 100G and 40G infrastructure?
A: Yes, the QSFP-DD ports are backward-compatible and support breakout cables for 10G, 25G, 40G, 50G, 100G, and 200G speeds, enabling seamless migration from legacy data center fabrics while providing a future-proof path to 400G.

Q: What power supply options are available?
A: The N9K-C9332D-H2R supports redundant 2000W power supplies in three variants: AC (NXA-PAC-2KW-PI), DC (NXA-PDC-2KW-PI), and HVDC (NXA-PHV-2KW-PI), all with hot-swappable port-side intake airflow for maximum deployment flexibility.

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