Juniper QDD-2X100G-LR4 Transceiver Module

About Juniper QDD-2X100G-LR4 2x100GBASE-LR4 QSFP28-DD 10km Optical Transceiver in Bangladesh

The Juniper QDD-2X100G-LR4 is a high-density optical transceiver designed to provide two independent 100 Gigabit Ethernet connections through a QSFP28-DD form factor. With 2x100GBASE-LR4 optical capability, the module supports up to 10 km over single-mode fiber and is designed for compatible Juniper networking platforms.

Juniper identifies the QDD-2X100G-LR4 with part number 740-079871. It is specified as a QSFP28-DD 2x100GBASE-LR4 optical transceiver with breakout capability, a dual-duplex CS PC/UPC connector and Digital Optical Monitoring. :contentReference[oaicite:2]{index=2}

Juniper QDD-2X100G-LR4 Specifications & Features

Overview

The Juniper QDD-2X100G-LR4 provides a 200GbE optical interface using two 100GbE LR4 channels in a single QSFP28-DD module. This design enables high-density network connectivity while supporting breakout applications for legacy 100GbE interfaces.

Juniper describes the module as a common optic and identifies it as breakout capable. :contentReference[oaicite:3]{index=3}

Buy Juniper QDD-2X100G-LR4 in Bangladesh

Purchase the Juniper QDD-2X100G-LR4 2x100GBASE-LR4 QSFP28-DD optical transceiver from Datacom Technologies (BD). We supply Juniper networking equipment, optical transceivers, data center switches, routers and enterprise network infrastructure in Bangladesh with competitive pricing and technical consultation.

Key Features

• 2 x 100 Gigabit Ethernet optical connectivity
• 200GbE aggregate capacity
• 2x100GBASE-LR4 optical technology
• QSFP28-DD / QSFP-DD form factor
• Up to 10 km transmission over SMF
• Dual-duplex CS PC/UPC connector
• Breakout capable
• Digital Optical Monitoring
• Standard operating temperature of 0°C to 70°C
• Designed for compatible Juniper platforms
• Suitable for high-density data center networks

Applications

• Data Center Interconnects
• High-Density Ethernet Networks
• 200GbE Network Infrastructure
• 100GbE Breakout Connectivity
• Leaf-and-Spine Networks
• Enterprise Data Centers
• Cloud Infrastructure
• Service Provider Networks
• High-Performance Computing Networks
• Longer-Reach Intra-Data-Center Links

2x100GBASE-LR4 Optical Connectivity

The QDD-2X100G-LR4 combines two 100GbE LR4 optical connections in a single QSFP28-DD module. This provides a total aggregate capacity of 200GbE while maintaining compatibility with 100GbE optical networking architectures.

Juniper lists the module's speed as 2 x 100 Gigabit Ethernet and confirms that it is breakout capable. :contentReference[oaicite:4]{index=4}

10km Single-Mode Fiber Transmission

The LR4 configuration is designed for transmission over single-mode fiber (SMF) with a maximum reach of approximately 10 km.

This makes the QDD-2X100G-LR4 suitable for longer-distance data center links, campus-scale interconnects and other applications where multimode short-reach optics are insufficient.

Juniper's Hardware Compatibility Tool lists QDD-2X100G-LR4 with SMF and a 10 km reach. :contentReference[oaicite:5]{index=5}

QSFP28-DD Form Factor

The QDD-2X100G-LR4 uses the QSFP28-DD / QSFP-DD form factor. Juniper identifies the form factor as QSFP-DD. :contentReference[oaicite:6]{index=6}

QSFP-DD provides a high-density optical interface that allows networking platforms to deliver multiple high-speed Ethernet channels within a compact module footprint.

Breakout Capability

The QDD-2X100G-LR4 is breakout capable. It can provide two 100GbE optical connections from a compatible QSFP-DD host interface.

Juniper specifically identifies QDD-2X100G-LR4 as a common optic with breakout capability. :contentReference[oaicite:7]{index=7}

Juniper has also described the QDD-2x100G-LR4 as an example of QSFP-DD optics that can be used to interconnect with legacy QSFP-100G-LR4 interfaces through breakout. :contentReference[oaicite:8]{index=8}

Dual-Duplex CS Connector

The QDD-2X100G-LR4 uses a dual-duplex CS PC/UPC optical connector. Juniper's Hardware Compatibility Tool identifies the connector configuration as dual duplex CS PC/UPC. :contentReference[oaicite:9]{index=9}

Make sure the installed fiber patch cable and mating connector are compatible with the CS interface before deployment.

Digital Optical Monitoring

The QDD-2X100G-LR4 supports Digital Optical Monitoring (DOM). Juniper identifies both monitoring availability and digital optical monitoring for this module. :contentReference[oaicite:10]{index=10}

DOM can provide visibility into supported optical operating parameters, helping network administrators monitor the health and operating condition of the transceiver.

Standard Temperature Operation

The QDD-2X100G-LR4 is specified for standard-temperature operation from 0°C to 70°C. Juniper identifies the optic as a standard-temperature QSFP28-DD module. :contentReference[oaicite:11]{index=11}

Ensure the host networking platform and surrounding data center environment remain within the specified operating conditions.

Compatible Juniper Platforms

Juniper's Hardware Compatibility Tool lists QDD-2X100G-LR4 for compatible routing and switching platforms including ACX7100-32C, ACX7100-48L, ACX7332, QFX5130-32CD, QFX5130-48C and QFX5130-48CM. :contentReference[oaicite:12]{index=12}

Juniper also identifies the optic in compatible ACX7509 configurations with the QDD-2X100G-LR4 introduced for the ACX7509-FPC-20Y. :contentReference[oaicite:13]{index=13}

Actual compatibility depends on the exact Juniper platform, interface module, Junos/Junos OS Evolved release and hardware configuration. Always verify the target system in Juniper's Hardware Compatibility Tool before installation.

Data Center Interconnect

The 10 km SMF reach makes the QDD-2X100G-LR4 useful for high-bandwidth connections between network devices separated by distances beyond typical short-reach multimode applications.

It can be used in data center interconnects, campus infrastructure and other enterprise networking environments requiring high-capacity optical connectivity.

High-Density Network Architecture

By delivering two 100GbE optical connections through a single QSFP28-DD module, the QDD-2X100G-LR4 helps network operators increase port density while maintaining 100GbE connectivity options.

This can be particularly useful in leaf-and-spine architectures and high-density switching environments where rack space, port density and optical capacity are important considerations.

QDD-2X100G-LR4 vs 100GBASE-LR4 QSFP28

Compatibility Considerations

The QDD-2X100G-LR4 is a QSFP28-DD / QSFP-DD optical transceiver and should only be installed in a compatible Juniper QSFP-DD host interface.

• Verify the exact Juniper switch/router model
• Verify compatible interface module or line card
• Check Junos/Junos OS Evolved software compatibility
• Use compatible single-mode fiber
• Use the appropriate dual-duplex CS connector
• Confirm the required 10 km optical budget
• Verify temperature requirements

Juniper's Hardware Compatibility Tool should be treated as the primary compatibility reference because supported optics can vary by platform and interface module. :contentReference[oaicite:14]{index=14}

Benefits

• 200GbE aggregate optical capacity
• Two independent 100GbE LR4 channels
• 10 km SMF reach
• High-density QSFP28-DD form factor
• Breakout capable
• Digital Optical Monitoring
• Dual-duplex CS optical connector
• Suitable for compatible Juniper networking platforms
• Ideal for data center and high-performance networks
• Supports migration between high-density QSFP-DD and 100GbE architectures

Why Buy from Datacom Technologies (BD)?

Datacom Technologies (BD) supplies Juniper networking equipment, optical transceivers, data center switches, routers and enterprise network infrastructure in Bangladesh. Customers can receive competitive pricing, technical consultation, deployment assistance and nationwide delivery.

• Call/WhatsApp: +8801748173213
• Email: sales@datacom.com.bd
• Alternative Email: datacomtechnologiesbd@gmail.com
• Office: Tropical Center, 218, Dr. Kudroti Khuda Road, New Elephant Road, Dhaka-1205, Bangladesh

Frequently Asked Questions (FAQ)

Q1: What is the Juniper QDD-2X100G-LR4?
The Juniper QDD-2X100G-LR4 is a QSFP28-DD optical transceiver providing 2 x 100 Gigabit Ethernet using 100GBASE-LR4 optics.

Q2: What is the Juniper part number?
The Juniper part number is 740-079871. :contentReference[oaicite:15]{index=15}

Q3: What is the total bandwidth?
The module provides two 100GbE channels, giving an aggregate capacity of 200GbE.

Q4: What form factor does QDD-2X100G-LR4 use?
It uses the QSFP28-DD / QSFP-DD form factor. :contentReference[oaicite:16]{index=16}

Q5: What fiber does QDD-2X100G-LR4 use?
It is designed for single-mode fiber (SMF).

Q6: What is the maximum transmission distance?
The QDD-2X100G-LR4 supports a reach of up to 10 km over SMF. :contentReference[oaicite:17]{index=17}

Q7: Is QDD-2X100G-LR4 breakout capable?
Yes. Juniper identifies the module as breakout capable. :contentReference[oaicite:18]{index=18}

Q8: What connector does it use?
It uses a dual-duplex CS PC/UPC connector. :contentReference[oaicite:19]{index=19}

Q9: Does the module support DOM?
Yes. Juniper identifies Digital Optical Monitoring as available. :contentReference[oaicite:20]{index=20}

Q10: What is the operating temperature?
The standard-temperature version is specified for 0°C to 70°C. :contentReference[oaicite:21]{index=21}

Q11: Which Juniper platforms support QDD-2X100G-LR4?
Juniper lists compatible platforms including ACX7100-32C, ACX7100-48L, ACX7332, QFX5130-32CD, QFX5130-48C and QFX5130-48CM. :contentReference[oaicite:22]{index=22}

Q12: Can QDD-2X100G-LR4 connect to legacy 100GbE interfaces?
Juniper describes QDD-2x100G-LR4 as an optic that can support interconnection with legacy QSFP-100G-LR4 interfaces through breakout. :contentReference[oaicite:23]{index=23}

Q13: Is QDD-2X100G-LR4 suitable for data centers?
Yes. Its high-density 2x100GbE configuration and 10 km SMF reach make it suitable for high-capacity data center and network interconnect applications.

Q14: Is QDD-2X100G-LR4 the same as QDD-2X100G-SR4?
No. LR4 and SR4 are different optical technologies. QDD-2X100G-LR4 is designed for 10 km SMF, while the SR4 variant is a separate Juniper optic with different optical characteristics and connector configuration.

Q15: Where can I buy Juniper QDD-2X100G-LR4 in Bangladesh?
You can contact Datacom Technologies (BD) for Juniper optical transceivers, switches, routers and data center networking equipment with competitive pricing and nationwide delivery.