Juniper QDD-400G-LR4-10 Compatible 400G QSFP-DD LR4 Optical Transceiver Module | HYTOPTODEVICE

This 400G  transceiver is 100% compatible with Juniper’s high-performance 400G switching and routing lines operating on Junos OS® or Junos OS Evolved. It integrates seamlessly into platforms including:

• Juniper PTX Series Packet Transport Routers:

  • PTX10001-36MR / PTX10003 / PTX10004 / PTX10008 (via 400G-capable line cards)

• Juniper MX Series 5G Universal Routing Platforms:

  • MX10004 / MX10008 (equipped with 400GbE MPC modules)

  • MX304 Universal Routing Platform

• Juniper QFX Series Data Center Switches:

  • QFX5220-32CD (32x 400GbE QSFP-DD ports)

  • QFX5130-32CD (32x 400GbE QSFP-DD ports)

• Juniper ACX Series Universal Metro Routers:

  • ACX7100-32C / ACX7509 Cloud Metro Routers

The Juniper® QDD-400G-LR4-10 is a carrier-grade, long-reach (10km) optical transceiver， engineered for high-density routing platforms and cloud-scale architectures. Key deployment scenarios include:

• Hyperscale Core & Spine-Leaf Fabrics: Connects core routers and spine switches within large-scale IP fabrics to manage massive cloud workloads and East-West traffic.

• Data Center Interconnect (DCI): Establishes high-capacity, low-latency 400G transport links between local or metro data center campuses up to 10km apart over single-mode fiber.

• Service Provider Core & Edge Routing: Upgrades carrier backbone networks, peering points, and metropolitan area networks (MANs) to support line-rate 400Gbps transmission.

• Large Enterprise Backbones: Connects high-performance campus distribution layers and critical network infrastructure requiring reliable, long-distance throughput.

Connectivity Solutions(Applications) of 400G QSFP-DD Optical Module
 







FAQ for 400G Optical Transceiver Module       

Q1: What is the maximum reach of the Juniper QDD-400G-LR4-10 ? A1: This optical module features long-reach transmission, supporting optical links up to 10km over standard G.652 single-mode fiber (SMF).

Q2: What wavelengths does the QDD-400G-LR4-10 use? A2: It utilizes four CWDM grid optical wavelengths (1271, 1291, 1311, 1331nm) to transport distance up to 10km with SMF.

Q3: What type of fiber connector for the Juniper Networks QDD-400G-LR4-10 ? A3: It uses a standard duplex LC. You will need a single-mode duplex LC-to-LC fiber optic patch cable to establish the connection.

Q4: Does the Juniper QDD-400G-LR4-10 use PAM4 modulation? A4: Yes, It uses advanced OIF 56G PAM4 (Pulse Amplitude Modulation 4-level) technology, converting 8 channels of 50Gbps electrical signals into 4 channels of 100Gbps optical signals, realizing the high speed 400G network transmission.

Q5: Is Digital Diagnostics Monitoring (DDM/DOM) supported for the Juniper QDD-400G-LR4-10? A5: Yes. it supports real-time DDM/DOM, allowing network administrators to monitor optical launch/receive power, temperature, voltage, and laser bias current.

Q6: What is the operating temperature range of this transceiver? A6: This is a commercial-grade module designed to operate reliably within a standard operating case temperature range of 0 to 70°C (32 to 158°F)

Q7: Can I plug a Juniper Networks compatible transceiver QDD-400G-LR4-10 into a standard 100G QSFP28 port? A7: No. The QSFP-DD form factor utilizes a higher density configuration with a dual-row pinout. It is mechanically and electrically incompatible with legacy 100G QSFP28 ports.

Q8: Is Forward Error Correction (FEC) required for this 400G module? A8: Yes. Per the IEEE 802.3bs standard, host platforms must enable KP4 FEC (Forward Error Correction) on the port to ensure low Bit Error Rates (BER) and link stability over the 10km distance.

Q9: Will using a third-party compatible module void my Juniper hardware warranty? A9: No. Under consumer protection laws like the Magnuson-Moss Warranty Act, OEMs cannot void your system warranty simply for using third-party peripherals. Our modules are programmed with correct EEPROM signatures to avoid "Non-Juniper transceiver" system warnings.

Q10: How do you verify compatibility and quality prior to shipping? A10: Each QDD-400G-LR4-10  optical module undergoes strict 100% hardware testing on original equipments.
  
Q11:Is  the QDD-400G-LR4-10  hot-swappable?A11:Yes,it is hot-pluggable, hot Pluggable QSFP-DD MSA Compliant.you can plug or unplug the optical module, while the device is powered on, without any damage

Q12:Do you support OEM ro customization for the QDD-400G-LR4-10 ? A12: Yes, we are the manufacturer of optical transceiver. we support customization including label,package and EEPROM.

Why Network Engineers Choose HYTOPTODEVICE

HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.

• 100% MSA-compliant modules with Cisco, Huawei,Dell,Juniper, and Arista compatibility
• ISO 9001:2015 certified manufacturing facility in Shenzhen
• Average lead time of 3–5 business days with DHL/FedEx express options
• Dedicated pre-sales engineering support for custom configurations
• Actual hardware,actual switches,actual results.we publish compatibility test video,eliminate compatibility anxiety. you can watch before you buy. 
• We can provide inspection and shipping videos to make you feel as if you are right here with the product.

"We replaced 100 Cisco-branded SFP+ with HYTOPTODEVICE equivalents across our spine layer — zero compatibility issues, 40% cost reduction."— Network Engineer of ISP, England

Quality Certification & Compliance：

 At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final inspection, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our SFP modules and network solutions:

• ISO 9001: Certified quality management and production consistency.

• CE & FCC: Fully compliant for seamless Global Market Access.

• RoHS: Committed to environmental responsibility and hazardous material control.

• Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

Certified Quality. Global Standards. Guaranteed Performance.

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