| Specification | Details |
|---|
| Model | Cisco C‑NIM‑1X |
| Product Type | Network Interface Module (NIM) |
| Form Factor | NIM plug‑in module for router chassis |
| Port Count | 1 × SFP/SFP+ (fiber port) |
| Supported Speeds | 1 Gbps / 10 Gbps (depends on SFP/SFP+ optics) |
| Supported Optics | Standard 1G and 10G SFP/SFP+ transceivers (fiber) |
| Connection Media | Fiber only (SFP/SFP+) |
| Backplane Interface | 10 Gbps non‑oversubscribed link to router forwarding engine |
| MACsec Support | 256‑bit WAN MACsec encryption |
| Layer Function | Routed Layer 3 WAN interface (no local switching) |
| Online Insertion/Removal | Supported (hot‑insertable in NIM slot) |
| Dimensions (H × W × D) | ~32 × 89 × 184 mm |
| Weight | Approx. 240 g |
| Operating Temp. | 0 °C to 40 °C |
| Storage Temp. | –40 °C to 70 °C |
| Humidity | 5% to 85% non‑condensing |
| Supported Platforms | Cisco Catalyst 8300 Series Edge Routers (NIM slot) |
| Software Requirement | Cisco IOS XE 17.3.2 or later |
| PoE Support | None (data‑only WAN port) |
Description:
The Cisco C‑NIM‑1X is a high‑performance 1‑port 10G/1G SFP+ Network Interface Module designed to expand WAN connectivity on Cisco Catalyst 8300 Series Edge platforms. It fits into a router’s NIM (Network Interface Module) slot, providing a flexible and scalable uplink option for high‑speed network deployments. The module supports both 1 Gbps and 10 Gbps data rates using standard SFP and SFP+ fiber optics, making it suitable for connections to service provider networks, data centers, or high‑capacity branch links.
A key feature of the C‑NIM‑1X is built‑in 256‑bit MACsec (IEEE 802.1AE) encryption, which enhances security by ensuring that traffic over the WAN connection is encrypted end‑to‑end. This makes the module ideal for secure enterprise WAN environments, SD‑WAN deployments, or any scenario requiring strong protection of routed traffic.
The single SFP/SFP+ interface does not support copper RJ‑45 connectivity or lower‑speed 10/100 Mbps modules; it is exclusively for fiber optics. It connects to the router backplane with a full 10 Gbps link, avoiding oversubscription and delivering consistent performance. With support for hot insertion and removal in supported NIM slots, it provides flexibility for maintenance and upgrades without shutting down the platform.
Overall, the Cisco C‑NIM‑1X is a compact but powerful module that enhances WAN throughput and security on compatible Catalyst 8300 Series routers, making it suitable for modern enterprise edge and branch infrastructures.
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