Juniper QDD-400G-SR8 Transceiver Module

About Juniper QDD-400G-SR8 400G QSFP56-DD SR8 Transceiver Module in Bangladesh

The Juniper QDD-400G-SR8 is a high-speed 400 Gigabit Ethernet optical transceiver designed for compatible Juniper data center and networking platforms. Using a QSFP56-DD form factor and 400G SR8 optical technology, it provides high-bandwidth short-reach connectivity over multimode fiber for modern data center networks.

The official Juniper Pathfinder Hardware Compatibility Tool identifies the QDD-400G-SR8 as a QSFP56-DD 400G SR8 transceiver with Juniper part number 740-114928. It uses an MPO-16 APC optical connector and is breakout capable. :contentReference[oaicite:1]{index=1}

Juniper QDD-400G-SR8 Specifications & Features

Overview

The Juniper QDD-400G-SR8 is designed for high-density 400GbE networking where short-reach multimode fiber connections are required. Its SR8 architecture is optimized for data center interconnects between switches, routers and other high-speed network infrastructure.

Juniper lists the QDD-400G-SR8 as a common 400 Gigabit Ethernet optic and identifies it as a QSFP56-DD transceiver. :contentReference[oaicite:2]{index=2}

Buy Juniper QDD-400G-SR8 400G Transceiver in Bangladesh

Purchase the Juniper QDD-400G-SR8 400G QSFP56-DD SR8 optical transceiver from Datacom Technologies (BD). We supply Juniper networking optics, switches, routers, transceivers and data center networking hardware in Bangladesh with competitive pricing, technical consultation and nationwide delivery.

Key Features

• 400GbE high-speed optical connectivity
• Juniper QDD-400G-SR8 model
• Juniper part number 740-114928
• QSFP56-DD / QSFP-DD form factor
• 400G SR8 optical technology
• 850nm wavelength
• Multimode fiber support
• Up to 100m reach depending on fiber type
• MPO-16 APC connector
• Breakout capable
• Designed for compatible Juniper networking platforms
• Ideal for high-density data center networks

400G Ethernet Performance

The QDD-400G-SR8 provides a 400 Gigabit Ethernet interface for high-bandwidth data center networking. It is designed for environments where traditional 100G and 200G links are being upgraded to higher-capacity 400G connectivity.

400GbE provides significant aggregate bandwidth for modern data center fabrics, cloud infrastructure, high-performance computing and other bandwidth-intensive networking environments.

SR8 Optical Technology

The SR8 designation indicates a short-reach 400G multimode optical solution using multiple optical lanes. Juniper's 400G optics guide describes SR8 as primarily focused on short-reach applications using multimode fiber. :contentReference[oaicite:3]{index=3}

The SR8 design makes the QDD-400G-SR8 particularly appropriate for short-distance data center links where multimode fiber infrastructure is preferred.

850nm Multimode Fiber

The QDD-400G-SR8 operates around the 850nm optical wavelength and is intended for multimode fiber applications.

Multimode fiber is commonly used for short-distance data center connections because it can provide high bandwidth over relatively short distances while supporting cost-effective structured cabling.

Up to 100m Reach

Juniper's compatibility information lists the QDD-400G-SR8 with multimode fiber reach options extending up to 100 meters. The supported distance depends on the specific multimode fiber grade and cabling implementation. :contentReference[oaicite:4]{index=4}

For longer-distance connections, other Juniper 400G optics such as FR4, LR4-10, DR4 or ZR may be more appropriate depending on the required distance and fiber infrastructure.

MPO-16 APC Connector

The QDD-400G-SR8 uses an MPO-16 APC optical connector. Juniper's official Pathfinder database identifies MPO-16 APC as the connector for this optic. :contentReference[oaicite:5]{index=5}

Make sure the installed fiber patch cable and network equipment use the correct MPO-16 APC configuration. Connector type and polarity must be matched correctly for the optical link to operate.

Breakout Capability

The Juniper QDD-400G-SR8 is identified as breakout capable. :contentReference[oaicite:6]{index=6}

This enables supported network platforms to use the optic for architectures where a 400G interface is divided into multiple lower-speed Ethernet connections, subject to the capabilities of the specific Juniper platform, software release and breakout cabling.

QSFP56-DD Form Factor

The QDD-400G-SR8 uses the QSFP56-DD family of high-density pluggable optics. The QSFP-DD form factor allows high-speed optical connectivity in compact switch and router ports.

This makes the optic suitable for high-density data center platforms where rack space, port density and aggregate bandwidth are important design considerations.

Juniper Compatibility

Juniper's Pathfinder Hardware Compatibility Tool lists QDD-400G-SR8 across compatible routing, switching and security platforms. Supported platforms include selected ACX7348, MX301, MX304, QFX5130-32CD, QFX5130-48C, QFX5130-48CM and SRX4700 configurations. :contentReference[oaicite:7]{index=7}

Exact compatibility depends on the hardware revision, interface module, Junos OS/Junos OS Evolved release and port configuration. Always check the Juniper compatibility matrix for the exact platform before purchasing.

Data Center Applications

• 400GbE data center switching
• High-speed switch-to-switch connections
• Data center spine-and-leaf networks
• Cloud infrastructure
• High-performance computing
• AI and accelerated computing networks
• Server aggregation
• Network fabric upgrades
• High-bandwidth storage networks
• Short-reach rack and row interconnects

400G Data Center Networking

As network traffic increases from cloud applications, virtualization, AI workloads, distributed storage and high-performance computing, 400GbE provides an efficient way to increase aggregate network capacity without requiring a proportional increase in physical port count.

The QDD-400G-SR8 is particularly useful where 400G connectivity is required across short multimode-fiber links within a data center.

QDD-400G-SR8 vs 400G LR4

Juniper identifies QDD-400G-LR4-10 as a 400G QSFP-DD optic for single-mode fiber up to 10km, while QDD-400G-SR8 is intended for short-reach multimode applications. :contentReference[oaicite:8]{index=8}

Fiber Compatibility

The QDD-400G-SR8 is a multimode-fiber optic. It should be deployed with compatible multimode fiber cabling and the appropriate MPO-16 APC connector configuration.

• Multimode fiber infrastructure
• Compatible MPO-16 APC patch cables
• Correct connector polarity
• Appropriate fiber grade for the required distance
• Compatible Juniper port and optic configuration

Installation Considerations

Before installation, verify the target Juniper device, port type, Junos OS/Junos OS Evolved release and supported optic list. Juniper's Pathfinder Hardware Compatibility Tool should be used to confirm compatibility with the exact platform.

Optical transceivers should be handled carefully. Keep protective dust caps installed whenever the optical ports are not connected, and avoid touching the optical connector end face.

Benefits

• 400GbE high-speed networking
• High-density QSFP56-DD form factor
• Short-reach multimode fiber support
• 850nm optical technology
• Up to 100m reach depending on MMF type
• MPO-16 APC connectivity
• Breakout capable
• Designed for compatible Juniper platforms
• Ideal for modern data center fabrics
• Suitable for high-bandwidth network upgrades

Why Buy from Datacom Technologies (BD)?

Datacom Technologies (BD) supplies Juniper transceivers, networking switches, routers, optical modules and data center infrastructure 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-SR8?
The QDD-400G-SR8 is a Juniper 400GbE QSFP56-DD SR8 optical transceiver designed for short-reach multimode-fiber networking.

Q2: What is the Juniper part number?
The official Juniper part number is 740-114928. :contentReference[oaicite:9]{index=9}

Q3: What speed does QDD-400G-SR8 support?
It is a 400 Gigabit Ethernet optical transceiver.

Q4: What form factor does it use?
It uses the QSFP56-DD / QSFP-DD form factor.

Q5: What fiber type does QDD-400G-SR8 use?
It is designed for multimode fiber (MMF).

Q6: What is the maximum reach?
Juniper lists reach options up to 100 meters, depending on the multimode fiber type. :contentReference[oaicite:10]{index=10}

Q7: What connector does QDD-400G-SR8 use?
It uses an MPO-16 APC connector. :contentReference[oaicite:11]{index=11}

Q8: Is QDD-400G-SR8 breakout capable?
Yes. Juniper identifies the optic as breakout capable. :contentReference[oaicite:12]{index=12}

Q9: Is QDD-400G-SR8 suitable for single-mode fiber?
No. The SR8 optic is intended for multimode fiber. For single-mode applications, Juniper offers other 400G optics such as DR4, FR4 and LR4-10.

Q10: Is QDD-400G-SR8 suitable for 10km links?
No. SR8 is a short-reach optic with reach up to approximately 100m depending on MMF type. For 10km connectivity, a Juniper 400G LR4-10 optic is a more appropriate option. :contentReference[oaicite:13]{index=13}

Q11: Which Juniper platforms support QDD-400G-SR8?
Juniper's compatibility database lists compatible configurations across platforms including ACX7348, MX301, MX304, QFX5130-32CD, QFX5130-48C, QFX5130-48CM and SRX4700. Exact compatibility depends on the platform and software release. :contentReference[oaicite:14]{index=14}

Q12: Is QDD-400G-SR8 suitable for data centers?
Yes. It is specifically suited to short-reach, high-bandwidth 400GbE data center networking.

Q13: Can QDD-400G-SR8 be used for 4 x 100G breakout?
The optic is officially identified as breakout capable. The exact breakout mode and required cable depend on the Juniper platform and software configuration. :contentReference[oaicite:15]{index=15}

Q14: Where can I buy Juniper QDD-400G-SR8 in Bangladesh?
You can contact Datacom Technologies (BD) for Juniper optical transceivers, switches, routers and data center networking hardware with competitive pricing and nationwide delivery.