CFP-GEN2-CGE-ER4 Juniper CFP 100G BASE ER4 SMF 40km Optic
Juniper CFP-GEN2-CGE-ER4 100GBASE-ER4 CFP Module
Extended-Reach 100GbE Optical Transceiver for Long-Haul Networking
The Juniper CFP-GEN2-CGE-ER4 is a high-performance 100 Gigabit Ethernet optical transceiver designed for long-distance data transmission in modern carrier and enterprise networks. Built by Juniper Networks, this second-generation CFP module supports 100GBASE-ER4 connectivity over single-mode fiber (SMF) with transmission distances of up to 40 kilometers, making it ideal for data center interconnects, metropolitan networks, and service provider backbones.
The module uses LAN-WDM (LAN Wavelength Division Multiplexing) technology, transmitting data across four optical wavelengths in the 1310 nm range (1295 nm, 1300 nm, 1304 nm, and 1309 nm). Each lane carries 25 Gbps, combining to deliver a full 100GbE data rate while maintaining high signal integrity across long fiber links.
Designed for large-scale network deployments, the CFP-GEN2-CGE-ER4 supports hot-pluggable installation, allowing network administrators to install or replace the transceiver without shutting down the host router or switch. This capability simplifies maintenance and minimizes downtime in critical networking environments.
The module also includes Digital Optical Monitoring (DOM) functionality, enabling real-time visibility into key performance metrics such as transmit power, receive power, module temperature, and supply voltage. These diagnostics help network engineers proactively monitor optical link health and maintain stable high-speed connectivity.
Compared with earlier 100G optical modules, the second-generation CFP design improves power efficiency and thermal management, reducing operational costs and improving reliability in high-density networking equipment.
With its long-reach optical performance, reliable monitoring capabilities, and carrier-grade design, the Juniper CFP-GEN2-CGE-ER4 provides a powerful solution for organizations deploying high-bandwidth 100GbE connectivity across metropolitan networks and geographically distributed data centers.
Product Specifications – Juniper CFP-GEN2-CGE-ER4 100GbE Optical Transceiver
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| Specification | Details |
|---|---|
| Manufacturer | Juniper Networks |
| Product Name | Juniper CFP-GEN2-CGE-ER4 |
| Product Type | 100 Gigabit Ethernet Optical Transceiver |
| Part Number | CFP-GEN2-CGE-ER4 |
| Form Factor | CFP (C Form-factor Pluggable) |
| Interface Standard | 100GBASE-ER4 |
| Ethernet Speed | 100 Gigabit Ethernet (100GbE) |
| Transmission Technology | LAN-WDM (Wavelength Division Multiplexing) |
| Fiber Type | Single-Mode Fiber (SMF) |
| Connector Type | Dual LC |
| Maximum Reach | Up to 40 km (25 miles) |
| Wavelengths | 1295 nm, 1300 nm, 1304 nm, 1309 nm |
| Optical Lanes | 4 × 25 Gbps |
| Data Rate | 103.125 Gbps aggregate |
| Power Consumption | Approx. 12 W |
| Operating Temperature | 0°C to 70°C (Commercial range) |
| Monitoring Support | Digital Optical Monitoring (DOM) |
| DOM Parameters | Temperature, voltage, transmit power, receive power |
| Compliance Standards | IEEE 802.3ba 100GBASE-ER4 |
| Hot Pluggable | Yes |
| Deployment | Metro networks, data center interconnects, service provider backbones |
| Typical Platforms | Compatible with supported Juniper routers and switches |
| Optical Efficiency | Second-generation CFP with improved power and thermal efficiency |
FAQs:
Q1. Can this module be used for shorter distances, such as 2km or 10km?
Yes, however, due to the high transmit power of ER4 modules, you may need to use optical attenuators to prevent "blinding" or damaging the receiver on the opposite end if the link is shorter than 20km.
Q2. What is the difference between CFP and QSFP28?
The CFP form factor is physically much larger and was the original standard for 100G. While newer hardware often uses QSFP28, many core Juniper routers (like the MX series with certain MPCs) continue to use CFP for its superior heat dissipation and long-reach capabilities.
Q3. Does this module support OTU4?
This specific part number is designed for 100GBASE-ER4 Ethernet. While some CFP modules are multi-rate (Ethernet and OTN), you should verify the specific Junos software version for OTN support.
Q4. Which Juniper line cards support this module?
It is commonly used with MX-series MPCs (like the MPC3-3D-1X100GE-CFP) and certain T-Series or PTX-Series core router interface cards.
Q5. Is the fiber connector SC or LC?
Standard 100GBASE-ER4 CFP modules typically feature a dual SC connector, but some variations or patch cables may require LC adapters. Always verify your specific patch panel requirements.
