C3KX-NM-10GT Cisco Gigabit Ethernet Network Module - Hot-swappable, 2 Ports

Overview of the Cisco Network Module

The Cisco C3KX-NM-10GT Gigabit Ethernet Network Module is equipped with 2 ports, making it an ideal choice for businesses and organizations that require high-speed network connectivity. These ports offer numerous benefits and play a crucial role in enhancing network performance and efficiency.

General Information

• Brand: Cisco
• Part Number: C3KX-NM-10GT
• Product Type: Network Module

Key Features

• Primary Use: Enhancing Data Network Connectivity
• Interfaces: Two 10GBASE-T LAN Ports
• Port Details: Dual RJ-45 10GBASE-T Network LAN Connectors
• Compatibility: Designed for Cisco Catalyst 3750-X and 3560-X Series Switches
• Dual 10 Gigabit SFP+ ports for high-speed uplinks
• Seamless integration with Catalyst 3560-X and 3750-X series switches
• Support for fiber optic transceivers and DAC cables
• Full duplex 10G throughput per port
• Hot-swappable design for minimal network disruption
• Compatibility with Cisco IOS feature sets

Interface and Connectivity

• 2 x 10GBASE-T LAN ports
• 2 x RJ-45 10GBASE-T network LAN connections

Compatibility Information

• Cisco Catalyst 3750-X Series Switches
• Cisco Catalyst 3560-X Series Switches

The Cisco Catalyst 3560-X 10 Gigabit Network Module 

The C3KX-NM-10GT is a high-performance 10 Gigabit Ethernet network module designed specifically for integration with the Cisco Catalyst 3560-X and Cisco Catalyst 3750-X series switches. this expansion module enables enterprises, data centers, and service providers to significantly enhance uplink bandwidth and aggregation capacity without replacing the entire switching infrastructure. It serves as a critical upgrade path for organizations transitioning from Gigabit Ethernet to high-speed 10G connectivity while preserving investment in existing hardware platforms.

This module is widely deployed in enterprise campus networks, branch aggregation layers, and access-to-core uplink scenarios where high-throughput, low-latency communication is essential. By integrating seamlessly into Catalyst 3560-X and 3750-X switches, the C3KX-NM-10GT ensures scalable architecture, flexible deployment options, and optimized network performance.

Core Architecture and Platform Compatibility

The C3KX-NM-10GT module is engineered to operate within the modular architecture of Cisco Catalyst 3560-X and 3750-X switches. These switches feature expansion slots that allow administrators to install network modules based on performance requirements. The 10 Gigabit Network Module introduces dual 10G SFP+ uplink ports, enabling high-speed fiber connectivity and enhanced backbone integration.

Compatibility is strictly aligned with Cisco’s hardware and IOS firmware ecosystem. When installed in supported Catalyst switches, the module is automatically recognized and configured through Cisco IOS, allowing administrators to manage it using familiar CLI or network management tools. This ensures minimal downtime during deployment and simplified scalability for enterprise environments.

High-Speed 10 Gigabit Performance Capabilities

One of the defining characteristics of the C3KX-NM-10GT module is its ability to deliver 10 Gigabit Ethernet throughput per port. This allows organizations to eliminate bottlenecks in uplink connections between access-layer switches and distribution or core-layer devices. The module supports full-duplex communication, ensuring consistent bidirectional data flow for latency-sensitive applications such as virtualization, VoIP, video conferencing, and large-scale data replication.

With increasing demand for cloud-based applications and distributed workloads, 10G uplinks provide a critical performance improvement over traditional Gigabit Ethernet connections. The module supports link aggregation and redundancy configurations, allowing multiple 10G links to be combined for enhanced bandwidth and failover protection.

Key Features and Functional Advantages

The C3KX-NM-10GT module incorporates several enterprise-grade features designed for reliability and scalability. These include hot-swappable installation, automatic module detection, and seamless integration with Cisco Catalyst switching architecture. The module supports advanced Layer 2 and Layer 3 functionality depending on switch licensing and configuration.

SFP+ Optics and Connectivity Options

The module utilizes Small Form-Factor Pluggable Plus (SFP+) interfaces, which allow flexible selection of optical transceivers and direct attach copper (DAC) cables. Depending on deployment requirements, administrators can choose short-range, long-range, or extended-range fiber modules. This flexibility makes the C3KX-NM-10GT suitable for both intra-building and inter-building connectivity.

In enterprise campus environments, short-range multimode fiber is often used for connecting distribution switches within the same facility. For longer distances, single-mode fiber modules extend connectivity across multiple buildings or remote network segments. DAC cables provide a cost-effective alternative for short-range high-speed interconnects within server rooms or rack-based deployments.

Integration with Cisco Catalyst Switching Platforms

The module is designed exclusively for Catalyst 3560-X and 3750-X switches, ensuring optimized performance and stability. These switches are widely deployed in enterprise networks due to their reliability, modular design, and support for advanced routing and switching features.

When installed, the module becomes part of the switch’s forwarding architecture, leveraging the internal switching fabric for high-speed data transfer. This tight integration ensures low latency and efficient packet processing, which is critical in enterprise-grade network environments.

Enterprise Network Use Cases

The C3KX-NM-10GT module is commonly deployed across a variety of enterprise networking scenarios. In campus networks, it serves as a high-speed uplink between access layer switches and core switching infrastructure. In branch office environments, it enables aggregation of multiple Gigabit links into a single high-capacity uplink.

Data-intensive industries such as finance, healthcare, and media production benefit significantly from the increased bandwidth provided by 10G uplinks. Applications such as real-time data analytics, medical imaging systems, and high-definition video streaming rely heavily on low-latency, high-throughput connections.

Network Performance Optimization

Deploying the C3KX-NM-10GT module contributes significantly to overall network optimization. By reducing congestion at the aggregation layer, it improves application responsiveness and ensures smoother traffic flow across the network. Load balancing techniques such as EtherChannel can be implemented to distribute traffic across multiple uplinks, further enhancing performance.

Quality of Service (QoS) mechanisms can also be applied to prioritize critical traffic types such as voice, video, and business-critical applications. This ensures consistent performance even during peak network utilization periods.

Switching Capacity and Throughput Efficiency

When paired with compatible Catalyst switches, the module enhances overall switching capacity by enabling high-speed uplinks that complement the internal switching fabric. This ensures that traffic moving between access and core layers does not become constrained by lower-speed uplinks.

The increased throughput also supports virtualization environments where multiple virtual machines generate substantial east-west traffic within data centers or enterprise networks.

Power Efficiency and Hardware Reliability

Designed with enterprise-grade reliability, the C3KX-NM-10GT module operates efficiently within the power envelope of Catalyst switches. It does not require additional external power sources, as it draws power directly from the host switch. This simplifies deployment and reduces operational complexity.

Redundancy features inherent in Catalyst switches further enhance reliability. In the event of a link failure, traffic is automatically rerouted through alternative paths if configured, ensuring continuous network availability.

Layer 2 and Layer 3 Feature Support

Depending on the switch configuration and licensing, the module supports both Layer 2 switching and Layer 3 routing functionalities. This allows organizations to implement flexible network architectures that can evolve over time.

Layer 2 capabilities include VLAN segmentation, trunking, and spanning tree protocol support. Layer 3 capabilities include static routing, dynamic routing protocols, and inter-VLAN routing when enabled on the host switch.

Security Features and Network Protection

Security is a critical aspect of any enterprise network module. The C3KX-NM-10GT benefits from Cisco’s integrated security framework, which includes port security, access control lists (ACLs), and DHCP snooping. These features help prevent unauthorized access and mitigate network threats.

Additional security measures such as 802.1X authentication and dynamic ARP inspection further enhance network integrity. These features ensure that only authorized devices can connect and communicate within the network infrastructure.

QoS and Traffic Management Capabilities

Quality of Service (QoS) is essential for managing diverse network traffic types. The module supports advanced QoS features that allow prioritization of voice, video, and mission-critical data. This ensures consistent application performance even under heavy network load.

Traffic shaping and policing mechanisms can be configured to control bandwidth usage and prevent congestion. These features are particularly important in environments with mixed application workloads.

Deployment Scenarios in Enterprise Environments

The C3KX-NM-10GT module is deployed in a wide range of enterprise environments, including corporate campuses, educational institutions, healthcare facilities, and government networks. Its flexibility makes it suitable for both small-scale branch deployments and large-scale enterprise infrastructures.

In campus environments, it is typically used to connect access layer switches to distribution switches. In data center edge deployments, it serves as a high-speed aggregation point for server connectivity and storage systems.

Comparison with Traditional Gigabit Uplink Modules

Compared to traditional Gigabit Ethernet uplink modules, the C3KX-NM-10GT provides a significant performance improvement. The transition from 1G to 10G uplinks reduces congestion, improves data transfer speeds, and supports modern application requirements. Organizations migrating from legacy infrastructure benefit from improved scalability and future-proofing, ensuring that network systems can handle increasing traffic demands.

Scalability and Future Network Expansion

The modular design of the Catalyst 3560-X and 3750-X platforms ensures that the C3KX-NM-10GT can be integrated into evolving network architectures. As organizations grow, additional modules and uplink configurations can be deployed without replacing existing infrastructure. This scalability is particularly important in dynamic business environments where network demands change rapidly due to cloud adoption, remote work, and digital transformation initiatives.

Operational Efficiency and Cost Optimization

By upgrading existing switches with the C3KX-NM-10GT module, organizations can avoid the high costs associated with full switch replacement. This modular upgrade approach allows incremental investment while achieving significant performance improvements. Operational efficiency is further enhanced through simplified management, reduced downtime, and centralized configuration capabilities provided by Cisco IOS.