C9300-NM-2Y Network Module: High-Density Connectivity for Cisco Catalyst 9300 Series

Introduction to the C9300-NM-2Y

The Cisco C9300-NM-2Y is a high-performance network module designed for the Cisco Catalyst 9300 Series switches. This module provides two additional 40G QSFP+ ports, enabling high-density 40 Gigabit Ethernet (40GbE) connectivity for enterprise and data center networks.With increasing demand for bandwidth-intensive applications, cloud computing, and virtualization, the C9300-NM-2Y ensures seamless scalability and future-proofing for modern network infrastructures.

Key Features of the C9300-NM-2Y

1. Dual 40G QSFP+ Ports for High-Speed Connectivity – Supports two 40GbE ports with QSFP+ transceivers – Enables high-bandwidth uplinks for aggregation and core networks – Backward compatible with 10GbE via breakout cables

MAIN SPECIFICATIONS

Product Description Cisco – expansion module – 25 Gigabit Ethernet x 2 Device Type Expansion module Form Factor Plug-in module Ports 25 Gigabit Ethernet x 2 Data Link Protocol 25 Gigabit LAN Data Transfer Rate 25 Gbps Designed For Catalyst 9300

 

EXTENDED SPECIFICATIONS

General

Device Type Expansion module Form Factor Plug-in module

Networking

Ports 25 Gigabit Ethernet x 2 Connectivity Technology Wired Data Link Protocol 25 Gigabit Ethernet Data Transfer Rate 25 Gbps

Expansion / Connectivity

Interfaces 2 x 25Gb Ethernet

Compatibility Information

Designed For Cisco Catalyst 9300

2. Enhanced Scalability for Cisco Catalyst 9300 Switches – Expands the Catalyst 9300’s port density without requiring additional switches – Ideal for data centers, campus networks, and enterprise backbones3. Flexible Deployment Options – Supports stacking and uplink connectivity – Can be used for high-speed inter-switch links (ISL) – Breakout capability to 4x10GbE per port for cost-effective deployments4. Seamless Integration with Cisco DNA & SD-Access – Fully compatible with Cisco Digital Network Architecture (DNA) – Supports Software-Defined Access (SD-Access) for automated network policies5. Energy Efficiency & Reliability – Low-power design for reduced operational costs – Built with Cisco’s enterprise-grade reliability

Benefits of Using the C9300-NM-2Y Module

✅ Future-Proof Networking – Supports 40GbE for next-gen applications. ✅ Cost-Effective Expansion – Avoids the need for additional switches. ✅ High Performance – Ideal for bandwidth-heavy workloads like video streaming, big data, and cloud services. ✅ Simplified Management – Integrates with Cisco DNA Center for centralized control.

Use Cases for the C9300-NM-2Y

1. Data Center Uplinks – Provides high-speed server connectivity and fabric interconnects.2. Campus Network Aggregation – Enhances core-to-distribution layer bandwidth in large campuses.3. High-Performance Computing (HPC) – Supports low-latency, high-throughput environments.4. Cloud & Virtualization – Enables scalable virtualized infrastructure with high-speed interconnects.

Comparison: C9300-NM-2Y vs. Other Network Modules

Model	C9300-NM-2Y	C9300-NM-4G	C9300-NM-8X
Port Type	2 x 40G QSFP+	4x1G RJ45	8x10G SFP+
Max Speed	40 Gbps	1Gbps	10Gbps
Breakout Support	Yes (4x10G)	No	No
Best For	High-speed uplinks	Legacy 1G devices	10G access layer

Installation & Compatibility

Compatible with: Cisco Catalyst 9300 Series switches (C9300, C9300L, C9300X) Installation: The C9300-NM-2Y is a hot-swappable module and no downtime is required for installation.

Conclusion

The Cisco C9300-NM-2Y is a powerful 40G network module that enhances the scalability and performance of Catalyst 9300 switches. Whether for data centers, enterprise networks, or cloud environments, this module delivers high-speed, reliable connectivity with seamless integration into Cisco’s SD-Access and DNA ecosystem.