Juniper Compatible QFX-QSFP-40G-ESR4 — TAA Compliant 40GBASE-SR QSFP+ (850nm, 400m) with DOM, MPO/MTP Connector

Discover a reliable, high-performance, enterprise-grade transceiver designed to deliver seamless 40 Gigabit Ethernet connectivity in Juniper QFX deployments. The Juniper Compatible QFX-QSFP-40G-ESR4 is a functionally identical, TAA-compliant QSFP+ module engineered to meet the demanding needs of data centers, server farms, and campus networks. This transceiver is programmed, tested, and supported in the United States, offering proven interoperability with Juniper QFX switches while delivering the durability and warranty that IT teams rely on for mission-critical infrastructure. With Digital Optical Monitoring (DOM) built-in, this optic provides real-time visibility into transmitter and receiver health, enabling proactive maintenance and reduced mean time to repair. Whether you are expanding capacity, refreshing aging optics, or consolidating links, this 40GBASE-SR4 transceiver is a solid choice for short-reach multimode fiber layouts that leverage MPO/MTP connectors.

• High-capacity 40GBASE-SR4 performance: Delivers four parallel 10 Gbps lanes in a compact QSFP+ form factor, enabling dense 40 Gigabit Ethernet links for data center spine-and-leaf architectures and high-performance compute environments.
• Juniper compatibility, guaranteed compatibility, lifetime support: Specifically engineered to be functionally identical to the Juniper QFX-QSFP-40G-ESR4, fully tested and certified for seamless operation in Juniper QFX environments with a lifetime warranty for ultimate peace of mind.
• 850 nm short-range MMF optics with 400 m reach: Optimized for multi-mode fiber networks, this transceiver supports distances up to 400 meters, making it ideal for data center corridors, campus backbones, and intra-building links that rely on MPO/MTP fiber harnessing.
• Digital Optical Monitoring (DOM) for proactive maintenance: Exposes real-time transmitter and receiver statistics, including optical power levels, temperature, and supply voltage. DOM data helps IT teams monitor health, predict failures, and schedule maintenance before failures impact services.
• TAA compliant, UL-listed, and ready for USA-based deployments: Complies with Trade Agreements Act requirements, ensuring a procurement-friendly option for government, education, and enterprise customers, backed by dependable USA-based support.

Technical Details of Juniper Compatible QFX-QSFP-40G-ESR4

• Product type: QSFP+ transceiver module designed for 40GBASE-SR4 applications.
• Standard: 40GBASE-SR4, suitable for multi-mode fiber links using four parallel 10 Gbps channels.
• Wavelength: 850 nm, optimized for short-range multi-mode fiber (MMF) links.
• Distance: Up to 400 meters on suitable MMF installations, with MPO/MTP fiber connectors for high-density cabling.
• Fiber type: Multi-Mode Fiber (MMF), compatible with common data center MMF ecosystems.
• Connector: MPO/MTP high-density fiber connector for efficient trunking and patching in modern data centers.
• DOM (Digital Optical Monitoring): Yes, provides real-time monitoring of transmitter and receiver conditions for proactive maintenance.
• Compatibility: Engineered to be functionally identical to Juniper QFX-QSFP-40G-ESR4 and tested for reliable operation in Juniper QFX switch environments.
• Compliance: TAA compliant, suitable for procurement in government and educational sectors.
• Warranty: Lifetime warranty, offering long-term assurance and support for deployments.
• Programming and support: Programmed, tested, and supported in the USA, ensuring compatibility with local standards and enterprise IT practices.

How to Install Juniper Compatible QFX-QSFP-40G-ESR4

Installing this transceiver is designed to be straightforward and low-risk, aligning with typical hot-plug procedures used in modern data center equipment. Follow these best-practice steps to ensure a clean, reliable deployment without surprises:

• Prepare the environment: Power down the server or switch chassis if required by your hardware maintenance policy. Ensure you have a clean, static-free workspace and the proper safety precautions in place.
• Inspect and handle: Remove the transceiver from its antistatic packaging and handle by the edges. Check for any visible damage or contamination on the connector ends before installation.
• Insert with confidence: Align the QSFP+ module with the QFX switch port and insert firmly until it seats with a smooth click. Do not force the module; if resistance is encountered, re-seat or verify compatibility with the host hardware.
• Attach fiber correctly: Connect the MPO/MTP fiber harness to the transceiver, ensuring proper orientation and polarity per your network design. Use a clean, properly mated MPO/MTP connector to prevent signal loss.
• Power-on and verify: Power on the device and monitor the link status on the switch management interface. Confirm 40G operation and verify that the transceiver is recognized as a 40GBASE-SR4 module with DOM reporting available.
• Review DOM data and performance: If your management platform supports DOM, review transmitter optical power, temperature, and other metrics to assess health. Schedule maintenance based on trends or alerts if values fall outside expected ranges.
• Maintenance considerations: Keep transceivers and fiber connections clean. Periodically inspect MPO/MTP connectors and replace any damaged or degraded fiber patches to preserve link quality.
• Documentation and support: Record the module’s serial and lot information, and maintain the warranty and support contact details for future reference or replacement needs.

Frequently Asked Questions

• Q: What does 40GBASE-SR4 mean? A: It is a short-reach 40 Gbps QSFP+ specification that uses four parallel lanes of 10 Gbps on multi-mode fiber, enabling high-density 40 Gbps links over modest distances.
• Q: Is this transceiver compatible with Juniper QFX switches? A: Yes. It is specifically designed to be functionally identical to the Juniper QFX-QSFP-40G-ESR4 and undergoes testing to ensure reliable operation in Juniper QFX environments.
• Q: What kind of fiber and connector does it use? A: It uses Multi-Mode Fiber (MMF) with an MPO/MTP connector, suitable for data center deployments that rely on dense fiber cabling.
• Q: What is DOM, and why does it matter? A: DOM stands for Digital Optical Monitoring. It provides real-time data about transmitter and receiver health, including optical power and temperature, enabling proactive maintenance and faster issue resolution.
• Q: Is this product government-friendly? A: Yes. The module is TAA compliant, designed to meet government procurement requirements and suitable for educational and public-sector deployments.
• Q: What about warranty and support? A: The product comes with a lifetime warranty and USA-based programming, testing, and support, ensuring ongoing assistance and replacement if necessary.