N3K-C31128PQ-10GE
Nexus 31128PQ, 96 SFP+ ports, 8 QSFP+ ports, 2RU switch
The Cisco N3K-C31128PQ-10GE switch delivers high-density 10GbE and 40GbE connectivity with very low latency for modern high-performance data centers.
N3K-C31128PQ-10GE Overview
The Cisco Nexus 31128PQ-10GE is a high-density and high-performance 10Gbps and 40Gbps Ethernet switch purpose-built for modern data center deployments. The Cisco N3K-C31128PQ-10GE provides wire-rate Layer 2 and 3 switching with very low latency, making it ideal for latency-sensitive applications.
With its 96 SFP+ and 8 QSFP+ ports, the Cisco N3K-C31128PQ-10GE can support high-speed server connectivity and spine-leaf underlay fabrics. The switch runs on Cisco’s NX-OS operating system, providing advanced features for automation, visibility, troubleshooting, and security. Dual redundant power supplies and fans ensure high availability for mission-critical environments.
The Cisco N3K-C31128PQ-10GE delivers line-rate performance on all ports with very low port-to-port latency. It can forward up to 1.4 billion packets per second, making it suitable for large virtualized environments. The switch is programmable through REST APIs and Bash shell, enabling DevOps-style automation.
Quick Specifications
| Feature | Description |
|---|---|
| Ports | 96 x 10GbE SFP+ ports 8 x 40GbE QSFP+ ports |
| Throughput | 2.5 Tbps switching capacity |
| Forwarding Rate | 1.4 Bpps |
| Latency | 850 ns port-to-port |
| Dimensions | 2RU |
| Typical Power | 148 W |
| Max Power | 413 W |
| Airflow | Forward and reversed airflow options |
| Operating System | Cisco NX-OS |
N3K-C31128PQ-10GE Details and Highlights
The Cisco Nexus 31128PQ-10GE comes with the following highlights:
- Wire-rate non-blocking throughput on all 104 ports
- Very low latency for high performance demands
- VXLAN support for network virtualization
- NX-OS features like POAP, CoPP, Cloud Scale ASIC
- Hot-swappable power supplies and fans
- DevOps capabilities like Bash, NX-API, and guest shell
- Broad range of supported transceivers and DAC cables
Supported Products
| Part Number | Description |
|---|---|
| N3K-C31128PQ-10GE | Nexus 31128PQ, 96 SFP+ + 8 QSFP+ ports |
| N3K-LAN1K9 | Layer 3 License |
| N9K-C9300-FAN3-B | Forward Airflow Fan Module |
| N9K-PAC-650W-B | 650W AC Power Supply |
Comparison to Similar Models
| Model | Ports | Speed | Form Factor |
|---|---|---|---|
| N3K-C31128PQ-10GE | 96x10GbE + 8x40GbE | 10/40GbE | 2RU |
| N3K-C3232C | 32x40GbE | 40GbE | 1RU |
| N9K-C93108TC-EX | 48x10GbE + 6x40GbE | 10/40GbE | 1RU |
Full Specifications
| Feature | Description |
|---|---|
| Ports | 96 x 10GbE SFP+ ports, 8 x 40GbE QSFP+ ports |
| Throughput | 2.5 Tbps |
| Forwarding Rate | 1.4 Bpps |
| Switching Memory | 12MB Shared Buffer |
| Flash Memory | 64GB SSD |
| CPU | Quad-core x86 |
| Latency | 850 ns port-to-port |
| Dimensions | 8.6 x 44.2 x 60.2 cm (3.4 x 17.4 x 23.7 in) |
| Weight | 10.1 kg (22.2 lb) |
| Power Supply | Dual Redundant 650W AC or 930W DC |
| Typical Power Draw | 148 W |
| Max Power Draw | 413 W |
| Airflow | Forward and reversed airflow options |
| Operating Temperature | 0°C to 50°C (32°F to 122°F) |
| Operating Humidity | 10% to 85% (non-condensing) |
| Operating System | Cisco NX-OS 7.0(3)I2(1) or later |
| Management | CLI, SNMP v1/v2/v3, Cisco DCNM, NX-API |
| Diagnostics | Call Home, Online Health Monitoring |
| Supported Transceivers | Cisco 10GBASE-SR/LR SFP+, 40GBASE-SR4/LR4/AOC QSFP+ |
Supported Modules and Accessories
| Part Number | Description |
|---|---|
| N3K-LAN1K9 | Layer 3 License |
| N9K-C9300-FAN3-B | Forward Airflow Fan Module |
| N9K-C9300-FAN3 | Reversed Airflow Fan Module |
| N9K-PAC-650W-B | 650W AC Power Supply |
| UCSC-PSU-930WDC | 930W DC Power Supply |
N3K-C31128PQ-10GE Licensing
The Cisco N3K-C31128PQ-10GE comes with the base NX-OS software license. The LAN Enterprise License (N3K-LAN1K9) is required to enable full Layer 3 functionality.
Installation and Deployment
The Cisco N3K-C31128PQ-10GE can be mounted in standard 19″ racks. It supports both forward and reversed airflow schemes. The switch can be configured via CLI, DCNM, or POAP for rapid deployment. Cisco offers complete lifecycle services to plan, deploy, and operate the switch.
Compliance and Safety
This switch complies with regulatory standards including UL 60950, CSA C22.2, EN 60950, AS/NZS 60950, FCC Class A, EN 55022 Class A, EN 300 386, and others.
Warranty and Support
The Cisco N3K-C31128PQ-10GE comes with 90 days limited hardware warranty that can be extended by purchasing Cisco support and maintenance contracts. Cisco offers technical support services covering installation, configuration, troubleshooting, and replacement.
N3K-C31128PQ-10GE End of Life Policy
The estimated End-of-Life date for the Cisco N3K-C31128PQ-10GE is July 31, 2028. Cisco will provide a minimum of 12 months’ notice before discontinuing services and support for the product. More details at Cisco EOL Policy
Brand
Cisco Systems
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