Network Interface Module Cisco C-NIM-8T 8-port 1000Base-T Gigabit Ethernet

The Cisco C-NIM-8T 8-port 1000Base-T Gigabit Ethernet network interface module provides eight copper RJ-45 gigabit ports for compatible Cisco routers. It is intended to expand Ethernet connectivity on routers that accept Cisco Network Interface Modules, offering additional uplink and branch access without requiring external switches. The module supports standard 1000Base-T operation over Category 5e or better copper cabling and integrates with the router’s forwarding and management features.

Advantages

The module increases port density by adding eight independent Gigabit Ethernet interfaces in a single integrated card, simplifying cabling and reducing the need for separate access hardware. It uses familiar RJ-45 copper connections for straightforward integration with existing LAN infrastructure and supports gigabit throughput for bandwidth-sensitive applications. The form factor is designed for direct installation into supported Cisco routers, maintaining centralized management and routing capabilities.

Suitable for

• Branch office uplinks to campus or data center networks
• Adding copper Gigabit Ethernet ports to routers in enterprise networks
• Consolidating uplink and access interfaces in space-constrained rack environments
• Deployments that use Category 5e/Cat6 cabling for short- to medium-distance links

Key specifications

• Interface type: 8 × 1000Base-T ports (RJ-45)
• Transmission medium: Unshielded or shielded twisted-pair copper (Cat5e/Cat6 recommended)
• Speed: 1 Gbps per port
• Duplex: Full-duplex operation supported
• Form factor: Network Interface Module compatible with supported Cisco routers
• Power: Draw and thermal characteristics aligned with router platform requirements

How to use

Install the module into a compatible Cisco router slot following the router’s hardware installation guide and safety procedures. After physical installation, use the router’s command-line interface or management software to verify port recognition, configure interface parameters (such as IP addressing, speed/duplex if needed, VLAN tagging and trunking), and apply any required security or quality-of-service policies. Connect copper Ethernet cables from network switches, servers, or access points to the RJ-45 ports to bring interfaces into service.

Usage recommendations

For reliable gigabit performance, use Category 5e or better copper cabling and ensure connections do not exceed standard maximum link distances. Verify router platform compatibility and software support before installation, and review power and cooling budgets of the router chassis to accommodate the additional module.