About Juniper QDD-400G-LR8 400GBASE-LR8 10km QSFP-DD Transceiver Module in Bangladesh
The Juniper QDD-400G-LR8 is a 400GbE QSFP-DD optical transceiver designed for high-capacity data-center, routing and switching applications. It supports 400GBASE-LR8 transmission over single-mode fiber with a reach of up to 10km, making it suitable for high-bandwidth network links between data-center racks, buildings and other network locations.
Juniper's official Pathfinder Hardware Compatibility Tool identifies the QDD-400G-LR8 as a 400 Gigabit Ethernet QSFP-DD optical transceiver supporting 400GBASE-LR8 over SMF for up to 10km. It uses a Duplex LC connector, operates at standard temperature from 0°C to 70°C, supports digital optical monitoring and is not breakout capable. The Juniper part number is 740-082823. ([Juniper Pathfinder](https://apps.juniper.net/hct/model/QDD-400G-LR8/overview))
Juniper QDD-400G-LR8 400G Transceiver Specifications & Features
| Specification | Details |
|---|
| Brand | Juniper Networks |
| Model | QDD-400G-LR8 |
| Juniper Part Number | 740-082823 |
| Data Rate | 400 Gigabit Ethernet |
| Optical Standard | 400GBASE-LR8 |
| Form Factor | QSFP-DD |
| Fiber Type | Single-Mode Fiber (SMF) |
| Maximum Reach | 10km |
| Connector | Duplex LC PC/UPC |
| Operating Temperature | 0°C to 70°C |
| Digital Optical Monitoring | Yes |
| Monitoring | Available |
| Breakout Capable | No |
| Product Type | Optical Transceiver |
Overview
The QDD-400G-LR8 provides a 400GbE optical interface in the compact QSFP-DD form factor. It is designed for high-bandwidth networking environments where long-reach single-mode fiber connectivity is required.
With a maximum reach of 10km, the LR8 optic is intended for longer-distance 400GbE connections than short-reach multimode solutions. Juniper describes LR8 as a 400G optical technology extending reach up to 10km. ([Juniper 400G Optics Guide](https://www.juniper.net/documentation/us/en/hardware/400g-optics-cables-guide/optics/topics/concept/400g-know-your-400gtransceiver.html))
Buy Juniper QDD-400G-LR8 400G Transceiver in Bangladesh
Purchase the Juniper QDD-400G-LR8 400GBASE-LR8 10km QSFP-DD Transceiver Module from Datacom Technologies (BD). We supply Juniper networking optics, switches, routers, transceivers and data-center networking equipment in Bangladesh with competitive pricing, technical consultation and nationwide delivery.
Key Features
- 400GbE optical networking
- 400GBASE-LR8 standard
- Up to 10km transmission distance
- QSFP-DD form factor
- Single-Mode Fiber support
- Duplex LC connector
- 0°C to 70°C standard operating temperature
- Digital Optical Monitoring support
- High-density 400G connectivity
- Suitable for compatible Juniper routing and switching platforms
- Designed for data-center and high-capacity network links
400GbE High-Bandwidth Connectivity
The Juniper QDD-400G-LR8 provides a 400 Gigabit Ethernet optical interface for high-bandwidth networking environments. A 400GbE link can significantly increase network capacity compared with 100GbE and 200GbE interfaces, making it suitable for modern data-center spine, core and aggregation architectures.
The QSFP-DD form factor allows high-density deployment of 400G optical interfaces in supported networking equipment.
400GBASE-LR8 Technology
The QDD-400G-LR8 is based on the 400GBASE-LR8 optical specification. The LR8 designation represents a long-reach 400G optical solution designed for single-mode fiber connectivity.
Juniper specifies LR8 optics for distances of up to 10km. Juniper also notes that LR8 is now considered a legacy 400G optical technology and recommends newer 400G LR4 optics for new deployments where appropriate. ([Juniper 400G Optics Guide](https://www.juniper.net/documentation/us/en/hardware/400g-optics-cables-guide/optics/topics/concept/400g-know-your-400gtransceiver.html))
10km Single-Mode Fiber Reach
The QDD-400G-LR8 supports transmission distances of up to 10km over compatible single-mode fiber infrastructure.
This makes the optic suitable for applications where a 400G connection must extend beyond the shorter distances supported by multimode SR optics, including certain data-center interconnect and campus or metropolitan network applications.
Duplex LC Connector
The QDD-400G-LR8 uses a Duplex LC optical connector. Juniper's official hardware compatibility information specifies a Duplex LC PC/UPC connector for this optic. ([Juniper Pathfinder](https://apps.juniper.net/hct/model/QDD-400G-LR8/overview))
Ensure that the installed fiber patching infrastructure uses compatible LC-terminated single-mode fiber and appropriate connector polish.
QSFP-DD Form Factor
The QDD-400G-LR8 uses the QSFP-DD form factor, a high-density pluggable optical module format designed for 400GbE and other high-speed networking applications.
Before purchasing, verify that the target Juniper platform and specific interface module support the QDD-400G-LR8 part number.
Digital Optical Monitoring
Juniper specifies monitoring and digital optical monitoring capabilities for the QDD-400G-LR8. These features allow compatible networking equipment to obtain optical operating information from the transceiver.
Depending on the Juniper platform and software, available monitoring information may include optical diagnostics and module operating parameters.
Standard Operating Temperature
The QDD-400G-LR8 is specified for a standard operating temperature range of 0°C to 70°C. ([Juniper Pathfinder](https://apps.juniper.net/hct/model/QDD-400G-LR8/overview))
For deployments in environments outside this range, confirm the supported optic and platform temperature requirements before installation.
Non-Breakout 400G Optic
Juniper identifies the QDD-400G-LR8 as not breakout capable. This means it should not be selected when a specific application requires a native 400G-to-4x100G breakout configuration.
For breakout applications, select a Juniper optic specifically designed and documented for 4x100G operation.
Data Center Applications
The QDD-400G-LR8 is suitable for high-bandwidth networking environments such as:
- Data-center spine networks
- Data-center aggregation
- Core network connectivity
- Data-center interconnect
- High-capacity enterprise networks
- Cloud infrastructure
- Service-provider networks
- Large-scale routing and switching environments
Juniper Platform Compatibility
Juniper's Pathfinder provides platform-specific compatibility information for QDD-400G-LR8. The optic is listed as a common optic and should be matched against the exact Juniper router, switch or interface module before deployment. ([Juniper Pathfinder](https://apps.juniper.net/hct/model/QDD-400G-LR8/overview))
Do not assume that every QSFP-DD 400G port supports every 400G optic. Hardware generation, interface module, Junos software and optic qualification can affect compatibility.
QDD-400G-LR8 vs 400G LR4
| Feature |
QDD-400G-LR8 |
Typical 400G LR4 |
| Speed |
400GbE |
400GbE |
| Reach |
Up to 10km |
Up to 10km |
| Fiber |
Single-Mode Fiber |
Single-Mode Fiber |
| Form Factor |
QSFP-DD |
QSFP-DD / platform dependent |
| Connector |
Duplex LC |
Duplex LC |
| Optical Lanes |
8-lane LR8 architecture |
4-lane LR4 architecture |
| Breakout |
No |
Model dependent |
Juniper currently recommends transitioning to 400G LR4 optics for new deployments because LR8 is considered legacy technology. However, QDD-400G-LR8 remains a defined Juniper optic for compatible systems. ([Juniper 400G Optics Guide](https://www.juniper.net/documentation/us/en/hardware/400g-optics-cables-guide/optics/topics/concept/400g-know-your-400gtransceiver.html))
Fiber Compatibility
The QDD-400G-LR8 is designed for single-mode fiber and should be deployed with compatible SMF infrastructure.
- Single-mode fiber required
- Duplex LC termination
- Compatible LC PC/UPC connectors
- Optical link budget must be respected
- Fiber quality and cleanliness should be maintained
Installation Considerations
Before installing the QDD-400G-LR8, confirm the following:
- Target Juniper platform supports QDD-400G-LR8
- Interface supports 400GbE QSFP-DD optics
- Junos software supports the optic
- Single-mode fiber infrastructure is available
- Duplex LC connectors are compatible
- Optical link distance is within the 10km specification
- Operating temperature remains within 0°C to 70°C
Enterprise Networking Benefits
- 400GbE high-bandwidth connectivity
- 10km single-mode fiber reach
- High-density QSFP-DD form factor
- Duplex LC connectivity
- Digital optical monitoring
- Suitable for long-distance 400G links
- Designed for compatible Juniper infrastructure
- Suitable for data-center and core network applications
Why Buy from Datacom Technologies (BD)?
Datacom Technologies (BD) supplies Juniper transceivers, optical modules, switches, routers and enterprise networking equipment in Bangladesh. Customers can receive competitive pricing, technical consultation, compatibility guidance 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-400G-LR8?
The QDD-400G-LR8 is a Juniper 400GbE QSFP-DD optical transceiver using the 400GBASE-LR8 standard for up to 10km single-mode fiber links.
Q2: What is the Juniper part number?
The Juniper hardware part number is 740-082823. ([Juniper Pathfinder](https://apps.juniper.net/hct/model/QDD-400G-LR8/overview))
Q3: What is the maximum transmission distance?
The QDD-400G-LR8 supports up to 10km over compatible single-mode fiber. ([Juniper 400G Optics Guide](https://www.juniper.net/documentation/us/en/hardware/400g-optics-cables-guide/optics/topics/concept/400g-know-your-400gtransceiver.html))
Q4: What fiber does QDD-400G-LR8 use?
It uses single-mode fiber (SMF).
Q5: What connector does it use?
It uses a Duplex LC PC/UPC connector. ([Juniper Pathfinder](https://apps.juniper.net/hct/model/QDD-400G-LR8/overview))
Q6: What is the form factor?
The module uses the QSFP-DD form factor.
Q7: Does QDD-400G-LR8 support DOM?
Yes. Juniper identifies digital optical monitoring as available for this optic. ([Juniper Pathfinder](https://apps.juniper.net/hct/model/QDD-400G-LR8/overview))
Q8: Is QDD-400G-LR8 breakout capable?
No. Juniper's official hardware compatibility information identifies the optic as not breakout capable.
Q9: What is the operating temperature?
The standard-temperature version operates from 0°C to 70°C. ([Juniper Pathfinder](https://apps.juniper.net/hct/model/QDD-400G-LR8/overview))
Q10: Is QDD-400G-LR8 compatible with every Juniper 400G port?
No. Compatibility depends on the exact Juniper platform, interface module and software. Check the Juniper Pathfinder compatibility information before deployment.
Q11: Is QDD-400G-LR8 still recommended for new deployments?
Juniper describes LR8 as legacy technology and recommends transitioning to 400G LR4 optics for new deployments where appropriate. ([Juniper 400G Optics Guide](https://www.juniper.net/documentation/us/en/hardware/400g-optics-cables-guide/optics/topics/concept/400g-know-your-400gtransceiver.html))
Q12: Can QDD-400G-LR8 be used for data-center interconnect?
Yes. Its 10km SMF reach makes it suitable for compatible high-bandwidth interconnect applications within its optical and platform specifications.
Q13: Where can I buy Juniper QDD-400G-LR8 in Bangladesh?
You can contact Datacom Technologies (BD) for Juniper optical transceivers, networking equipment and compatible data-center infrastructure.
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