C3850-NM-4-1G Cisco Catalyst 3850 4-Ports Network Module Review
Introduction
As businesses grow and their network infrastructure becomes more complex, so does the need for robust, high-performance network modules that enhance switching capabilities without compromising stability or security. This blog will offer a detailed review of the C3850-NM-4-1G Cisco Catalyst 3850 4-Ports Network Module, exploring its features, technical specifications, performance benefits, use cases, and how it fits into modern enterprise networks. Whether you’re planning a network upgrade or scaling your infrastructure, this module deserves your attention.
Key Features
- Can be easily swapped with other modules based on uplink requirements.
- Integrates with Cisco’s network security and policy features through the 3850 switch.
- Provides modular uplink options, allowing you to choose different network module types.
Technical Specifications:
| Brand | Cisco |
| Model | C3850-NM-4-1G |
| Number of Total Expansion Slots | 4 *1-Gigabit Ethernet (SFP) ports |
| Product Type | Expansion Module |
| Expansion Slot Type | SFP (mini-GBIC) |
| Speed | 1 Gbps per port |
| Hot Swappable | Yes |
| Dimensions (W x D x H) | Approx. 8.0 x 3.5 x 1.0 inches (varies) |
| Weight | Approx. 0.5 lbs (0.23 kg) |
| Condition | Refurbished |
Hot-Swappable Design
One of the standout features of the C3850-NM-4-1G is its hot-swappable nature, which means it can be inserted or removed without shutting down the switch or affecting existing operations. This feature is particularly useful for large networks that require constant uptime and minimal disruption during maintenance or upgrades.
Four 1G SFP Ports
The module provides four 1-Gigabit SFP ports which support a wide range of SFP transceivers. This enables network administrators to connect switches over varying distances using multimode or single-mode fiber optics, or even copper, depending on the SFP type selected.
Plug-and-Play Integration
This network module is natively supported by the Cisco IOS software running on Catalyst 3850 switches. As such, integration is seamless, requiring little to no configuration, making it highly efficient for IT departments to deploy.
Performance Meets Efficiency
The 7200 RPM rotational speed combined with a 128MB cache ensures quick read/write operations, which is vital for streaming, backups, and simultaneous file access. Moreover, its advanced power management capabilities help reduce operational costs—an important factor for businesses running multiple drives.
Improved Flexibility
The C3850-NM-4-1G is designed to provide modular uplink flexibility, allowing network engineers to choose between different uplink modules (1G, 10G, or even 40G in other models) depending on the deployment scenario. The 4-1G version serves perfectly for moderate bandwidth environments and can be easily upgraded in the future.
Backward Compatibility
This module supports older network infrastructures that may not yet have transitioned to 10G or higher, making it an excellent choice for organizations aiming for phased upgrades or hybrid environments.
Installation and Compatibility
Installing the C3850-NM-4-1G is straightforward. Simply power off the switch (or take advantage of hot-swapping), slide in the module, and ensure it’s securely seated in the slot. The Catalyst 3850 switch will automatically recognize the module and enable its ports. It’s fully compatible with:
Cisco Catalyst 3850 Series Switches (e.g., WS-C3850-24T, WS-C3850-48P, etc.)
Cisco IOS XE Software, which provides centralized management and advanced security features
A wide array of Cisco and third-party 1G SFP transceivers, offering exceptional deployment flexibility
Why Choose the C3850-NM-4-1G?
In summary, the Cisco C3850 network module brings reliability, simplicity, and flexibility to your network. It strikes a balance between cost and performance, particularly in networks where 10G is not yet required. With its hot-swappable capability, diverse SFP support, and seamless integration with Cisco’s IOS software, this module can extend the lifespan and functionality of your switch investment.
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Also Read:
C9300-NM-4M Cisco Catalyst 9300 4 x mGig Network Expansion Module Review