Cisco Firepower 2-port 40G SR FTW Network Module 2 x 40GBase-SR4 Network – Optical Fiber40 GE- 40GBase-SR4 – FPR4K-NM-2X40G-F
Scaling Enterprise Security: Cisco 2-Port 40G SR FTW Network Module
High-density 40GbE connectivity with hardware-led fail-to-wire resiliency.
Data center traffic patterns demand rapid throughput scaling and uncompromised uptime. The Cisco FPR4K-NM-2X40G-F is a specialized network module built for the Cisco Firepower 4100 Series security appliances. Delivering two high-speed 40GbE interfaces, it expands network density while preserving absolute availability.
The standout feature of this module is its Fail-To-Wire (FTW) capability. In the event of a power loss or appliance failure, the hardware bypass ports automatically create a direct optical path. This allows critical traffic to pass uninterrupted through your network backbone, making it ideal for inline deployments where security inspections must never bottleneck infrastructure uptime.
Key Technical Highlights
- Optical Infrastructure: Utilizes short-range (SR4) multi-mode fiber runs over MPO/MTP physical cabling.
- Fail-To-Wire Resilience: Mechanical bypass protection keeps link-state active if inline inspection fails.
- Hardware Target: Purpose-built for low-latency line cards inside Firepower 4100 series chassis systems.
Technical Specifications & Data Sheet
| Parameter | Specification Details |
|---|---|
| Product Part Number | FPR4K-NM-2X40G-F |
| Form Factor | Plug-in Hardware Network Module |
| Port Count | 2 x 40 Gigabit Ethernet Ports |
| Transceiver Type | 40GBase-SR4 (QSFP+) |
| Media Type | Multi-mode Optical Fiber (MMF) |
| Bypass Support | Yes — Hardware Fail-To-Wire (FTW) optical bypass |
| Compatibility | Cisco Firepower 4100 Series Firewalls (4110, 4120, 4140, 4150) |
| Wavelength | 850 nm nominal over multi-mode paths |
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