Cisco C9300X-NM-2C Network Module

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For organizations upgrading their switching infrastructure, the Cisco C9300X-NM-2C provides a way to add high-bandwidth uplink interfaces to a supported switch without replacing the entire switching platform. It is particularly relevant to enterprise campus networks, large branch environments, and network designs where high-speed links between switching layers are important. Actual performance and supported configurations depend on the host switch, software release, optics, cables, and Cisco compatibility requirements.

Cisco C9300X-NM-2C Network Module Overview

The Cisco Catalyst 9300X platform supports modular uplink options that allow network architects to select connectivity according to their bandwidth and infrastructure requirements. The C9300X-NM-2C is the two-port, 40G/100G option in this family. Its QSFP interfaces are intended for compatible high-speed transceivers, direct-attach cables, or other supported connectivity components, depending on the intended link and host platform.

Unlike an access switch with a fixed collection of front-panel user ports, an uplink network module is designed to extend the connectivity options of the host switch. The C9300X-NM-2C therefore focuses on high-capacity connections between switches, aggregation devices, and other supported network infrastructure. Before purchasing, customers should verify that their exact Catalyst 9300X switch model supports this module and the required interface configuration.

Key Product Highlights

• Manufacturer: Cisco
• Model: C9300X-NM-2C
• Product type: Network uplink module
• Interface type: QSFP
• Port count: 2
• Supported link rates: 40G and 100G, subject to platform and component compatibility
• Product family: Cisco Catalyst 9300X
• Primary role: High-bandwidth switch uplink connectivity
• Compatibility: Supported Cisco Catalyst 9300X Series switches only

Technical Specifications of Cisco C9300X-NM-2C

The following table summarizes the principal product information for the Cisco C9300X-NM-2C. Specifications that depend on the switch model or installed components should be checked against the official Cisco documentation before deployment.

Dual 40G and 100G QSFP Connectivity

The defining feature of the Cisco C9300X-NM-2C is its two QSFP interfaces supporting 40G or 100G Ethernet configurations when the selected host switch, transceiver, cable, and software support the intended mode. These high-speed connections can provide substantially more bandwidth per link than conventional 1G or 10G uplinks, making the module useful in networks that carry traffic from many access switches or support bandwidth-intensive applications.

100 Gigabit Ethernet Uplinks

100G uplinks can be useful where the network design requires high-capacity connections between switching layers. For example, a supported Catalyst 9300X access or distribution switch may connect to an upstream aggregation layer using an appropriate 100G interface and compatible optical or direct-attach components. The practical link distance, media type, and supported optical standard depend on the transceiver or cable selected.

Before specifying a 100G connection, confirm the supported optic model, fiber type, reach, port configuration, and software requirements at both ends of the link. A 100G-capable module alone does not guarantee that every 100G transceiver or cable is supported.

40 Gigabit Ethernet Uplinks

40G connectivity can be suitable for networks that require high throughput but are designed around existing 40G infrastructure. It may help an organization integrate a compatible Catalyst 9300X switch with upstream equipment using supported 40G interfaces. The choice between 40G and 100G should reflect the bandwidth needs, supported equipment, cabling plan, and expected growth of the network.

Choosing the Appropriate Link Speed

Network teams should select a link speed based on end-to-end compatibility rather than the module specification alone. Check the interface capabilities of the connected device, the supported transceiver or cable, the software release, and the configuration guidelines for the host switch. This process helps avoid ordering components that cannot establish the intended connection.

Compatibility with Cisco Catalyst 9300X Switches

The C9300X-NM-2C belongs to the Catalyst 9300X network-module family. Cisco distinguishes these modules from those designed for standard Catalyst 9300 switches. As a result, buyers should not assume that a module made for the 9300X platform will work in every switch carrying a Catalyst 9300 name.

When planning an installation, identify the complete switch model and hardware configuration. Consult the Cisco hardware installation guide and the applicable software release documentation to verify module support. The compatibility check is especially important for specialized models and configurations that may have restrictions on available ports or breakout functionality.

Important Note for Catalyst 9300X-48HXN

Cisco documents specific operating restrictions for network modules installed in the Catalyst 9300X-48HXN. For the C9300X-NM-2C, both module ports can be used, but breakout cable support is limited by platform and software release: Cisco’s documentation identifies breakout support on port 1 only in applicable later releases, with no breakout support on port 2. Earlier releases have additional breakout limitations. Always check the documentation for the exact IOS XE version and switch model before designing a breakout connection.

Optics and Cable Verification

QSFP-family components can differ in supported speed, reach, optical wavelength, fiber type, and cable format. A component that fits physically may not be supported for the desired speed or configuration. Verify the precise part number in Cisco’s current transceiver compatibility resources before ordering optics or cables.

• Confirm that the host switch supports the C9300X-NM-2C.
• Verify that the intended port supports the required 40G or 100G operating mode.
• Check the transceiver or direct-attach cable part number.
• Confirm fiber type, connector, reach, and the capabilities of the device at the other end.
• Review any software-release restrictions that apply to the selected configuration.

Where the Cisco C9300X-NM-2C Is Used

Enterprise Campus Networks

Large campus networks may aggregate traffic from multiple access switches into a distribution or core layer. A high-speed uplink module can help provide the required connection capacity where the supported switching architecture calls for 40G or 100G links. It can also give network teams greater flexibility when planning uplink bandwidth for a growing user base or an increasingly demanding application environment.

Aggregation and Distribution Layers

Aggregation switches often carry traffic from multiple network segments. High-capacity uplinks can help reduce the risk of oversubscribed connections when the network is engineered with appropriate capacity planning. The C9300X-NM-2C may be considered for this role where the host platform and network design support it.

High-Bandwidth Infrastructure

Applications such as virtualization, centralized storage access, large file transfers, and high-volume east-west traffic can increase the bandwidth demands placed on a switching environment. The correct 40G or 100G uplink design depends on traffic patterns, oversubscription targets, redundancy requirements, and the capabilities of all connected devices.

Network Modernization

Organizations refreshing their switching infrastructure may need to support existing 40G links while preparing for higher-capacity 100G connections. The dual-rate design of the C9300X-NM-2C can offer flexibility where both operating modes are supported by the selected equipment and components. It should be evaluated as part of a complete migration plan rather than as a standalone guarantee of future compatibility.

Cisco C9300X-NM-2C vs. Other Cisco Network Modules

Cisco offers different network modules for different interface counts and bandwidth requirements. The following comparison summarizes their general roles. Always check the current Cisco documentation for supported host platforms and any model-specific restrictions.

How to Choose Between C9300X-NM-2C and C9300X-NM-8Y

The main difference is the intended uplink speed class and interface type. The C9300X-NM-2C offers two QSFP ports for supported 40G or 100G connections, whereas the C9300X-NM-8Y offers eight SFP-based ports designed for supported 1G, 10G, and 25G links. The C9300X-NM-2C is a candidate for fewer, higher-bandwidth links; the C9300X-NM-8Y may be more suitable where a greater number of 25G-or-lower interfaces is required. Host-switch compatibility and the optics plan should determine the final choice.

Related Cisco Catalyst Switches and Network Products

Explore related NexoGet listings to compare supported Catalyst platforms and other network components. The links below are for product discovery and do not imply that every model is compatible with the C9300X-NM-2C.

• Cisco Catalyst C9300X-12Y-E Switch
• Cisco Catalyst C9300X-24Y-E Switch
• Cisco Catalyst C9300X-48HX Switch
• Cisco Catalyst C9300X-48TX Switch
• Cisco Catalyst C9300X-48HXN Switch
• Cisco Catalyst C9300X-24HX Switch
• Cisco Catalyst C9300L-48PF-4X Switch
• Cisco Catalyst C9300L-24UXG-4X Switch
• Cisco Catalyst C9300L-24UXG-2Q Switch
• Cisco Catalyst C9300L-48UXG-4X Switch
• Cisco Catalyst C9300L-48UXG-2Q Switch
• Cisco Catalyst C9300LM-48UX-4Y Switch
• Cisco Catalyst C9300-24T Switch
• Cisco Catalyst C9300-48T Switch
• Cisco Catalyst C9300-24P Switch
• Cisco Catalyst C9300-48P Switch
• Cisco Catalyst C9300-24U Switch
• Cisco Catalyst C9300-48U Switch
• Cisco Catalyst C9300-24UX Switch
• Cisco Catalyst C9300-48UXM Switch
• Cisco Catalyst C9300-48UN Switch
• Cisco Catalyst C9500-48Y4C-E Switch

Installation and Deployment Considerations

Network modules should be installed according to the hardware installation guide for the host switch. Confirm the supported module, installation procedure, software requirements, and any necessary maintenance window before beginning work. Follow the manufacturer’s safety and handling instructions, and use qualified network personnel for installation and configuration.

Plan the End-to-End Connection

Before deployment, document the intended link speed, connected device, transceiver or cable part number, fiber type, and required reach. Validate the configuration at both ends of the link and make sure that the selected components are supported by the respective platforms. This is especially important when using 100G links or considering breakout configurations.

Check Network Resilience

High-speed uplinks can be part of a redundant network design, but redundancy depends on the wider architecture, not on the module alone. Review link aggregation, routing, spanning-tree or other applicable network behavior, and the failure scenarios that matter to the deployment. Ensure that the overall design meets the organization’s availability and capacity objectives.

Why Source the Cisco C9300X-NM-2C from NexoGet?

NexoGet helps customers explore networking hardware for enterprise infrastructure projects. When requesting a quotation for the Cisco C9300X-NM-2C, provide the host switch model, desired link speed, required optics or cable type, quantity, destination country, and any preferred product condition. This information helps the supplier confirm availability and prepare a more relevant quotation.

Customers should also confirm the exact part number, product condition, included accessories, warranty terms, delivery options, and shipping costs before placing an order. These details can vary by stock source and shipment, so they should be confirmed for the actual item being purchased.

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Frequently Asked Questions

What is the Cisco C9300X-NM-2C?

It is a Cisco Catalyst 9300X network uplink module with two QSFP ports supporting 40G or 100G Ethernet configurations when supported by the host platform and connected components.

How many ports does the C9300X-NM-2C provide?

The module provides two QSFP interfaces. The operating mode and supported connectivity depend on the compatible switch, software, optics, and cabling.

Does the C9300X-NM-2C support 100G Ethernet?

Yes. Cisco lists this model as a dual-rate 100G/40G QSFP network module. The selected host switch and connected components must support the intended operating mode.

Can I install this module in any Catalyst 9300 switch?

No. Cisco Catalyst 9300X network modules are designed for supported Catalyst 9300X switch models. Do not assume compatibility with standard Catalyst 9300 or Catalyst 9200 platforms.

Are transceivers and cables included?

Do not assume that transceivers or cables are included. Check the specific product listing or quotation to confirm the contents of the package and order any required compatible components separately.

Where can I check the official specifications?

Consult the official Cisco Catalyst 9300 Series data sheet and the relevant Cisco network module installation guide for compatibility and installation details.

Conclusion

The Cisco C9300X-NM-2C Network Module is designed for organizations that need two high-speed QSFP uplinks supporting 40G or 100G Ethernet on compatible Cisco Catalyst 9300X switches. Its role is to provide uplink flexibility for high-bandwidth enterprise networks, including campus, aggregation, and distribution environments. Choosing the right configuration requires checking the host switch model, supported IOS XE release, optics, cables, and link requirements. Review Cisco’s official documentation and confirm the exact order details with the supplier to ensure that the module fits the intended deployment.