Arista QDD-400G-SR8 – QSFP-DD SR8 Optical Transceiver

About Arista QDD-400G-SR8 QSFP-DD SR8 Optical Transceiver in Bangladesh

The Arista QDD-400G-SR8 is a high-speed 400Gbps Ethernet optical transceiver designed for short-reach connectivity in modern data center, cloud, AI, and high-performance computing networks. Using the QSFP-DD form factor and 400GBASE-SR8 parallel optical architecture, it provides high-density 400GbE connectivity over compatible multimode fiber.

The transceiver uses eight parallel optical lanes with 50G PAM4 signaling per lane to deliver an aggregate 400Gbps optical connection. Operating at an 850nm-class optical wavelength, the module is designed for short-reach multimode fiber applications such as switch-to-switch, leaf-to-spine, rack-to-rack, and high-performance server networking.

The QDD-400G-SR8 uses an MPO-16 APC optical connector. Depending on the fiber grade and implementation, SR8 optics can support distances of up to approximately 70 meters over OM3 and 100 meters over OM4 multimode fiber.

Arista QDD-400G-SR8 QSFP-DD SR8 Optical Transceiver Specifications & Overview

Overview

The Arista-compatible QDD-400G-SR8 provides 400Gbps optical Ethernet connectivity through a high-density QSFP-DD interface. It is designed for network environments where very high bandwidth and efficient switch port density are required over short multimode fiber distances.

The 400GBASE-SR8 architecture uses eight parallel optical lanes, with each lane carrying approximately 50Gbps using PAM4 modulation. The eight lanes are combined to provide an aggregate 400Gbps optical connection.

Operating at an 850nm-class optical wavelength, the module is optimized for short-reach multimode fiber. With compatible OM3 fiber, the link can typically reach approximately 70 meters, while OM4 fiber can support up to approximately 100 meters under suitable conditions.

The MPO-16 APC interface provides the parallel optical connection required by the SR8 architecture. Correct connector type, fiber polarity, lane mapping, and compatible multimode fiber must be verified before deployment.

Buy Arista QDD-400G-SR8 QSFP-DD SR8 Optical Transceiver in Bangladesh

Purchase the Arista-compatible QDD-400G-SR8 QSFP-DD SR8 Optical Transceiver from Datacom Technologies (BD). We supply high-speed optical transceivers, Arista-compatible networking optics, Ethernet switches, routers, servers, storage, fiber connectivity products, and data center infrastructure with competitive pricing, technical consultation, deployment assistance, and nationwide delivery throughout Bangladesh.

Compatibility

• Compatible Arista 400GbE Networking Platforms Supporting QSFP-DD
• Arista QSFP-DD 400G Interfaces
• 400GbE Data Center Switching Platforms
• AI and GPU Networking Infrastructure
• High-Performance Computing Networks
• Compatible 400GBASE-SR8 Optical Interfaces
• OM3 and OM4 Multimode Fiber Infrastructure
• MPO-16 APC Fiber Cabling

Always verify the exact transceiver vendor, host switch model, EOS/firmware support, supported optics list, port configuration, power requirements, connector type, fiber polarity, and cabling requirements before deployment.

Applications

• 400GbE Data Center Networking
• AI Cluster Networking
• GPU Infrastructure
• High-Performance Computing
• Leaf-to-Spine Connectivity
• Switch-to-Switch Connectivity
• Rack-to-Rack Data Center Links
• Cloud Infrastructure
• Network Aggregation
• Short-Reach Multimode Fiber Links

Benefits

• 400Gbps high-speed Ethernet connectivity
• High-density QSFP-DD form factor
• 8 × 50G parallel optical lane architecture
• PAM4 optical modulation
• 850nm-class multimode optical transmission
• MPO-16 APC parallel-fiber interface
• Up to approximately 70m over OM3 fiber
• Up to approximately 100m over OM4 fiber
• Ideal for high-density data center networking
• Suitable for AI, HPC and cloud infrastructure

Why Buy from Datacom Technologies (BD)?

Datacom Technologies (BD) supplies enterprise networking and data center products in Bangladesh, including high-speed optical transceivers, Arista-compatible networking optics, Ethernet switches, routers, servers, storage, and fiber connectivity solutions. Customers can get competitive pricing, technical consultation, deployment assistance, and after-sales support.

• 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 data rate of the Arista QDD-400G-SR8?
The QDD-400G-SR8 is designed for 400Gbps Ethernet connectivity using eight parallel optical lanes.

Q2: What does SR8 mean?
SR8 refers to a short-reach parallel optical architecture using eight optical lanes. In a 400G implementation, each lane carries approximately 50Gbps using PAM4 modulation.

Q3: What form factor does the QDD-400G-SR8 use?
It uses the QSFP-DD form factor, which provides high bandwidth and high port density for modern data center switches.

Q4: What type of fiber does the QDD-400G-SR8 use?
The 400GBASE-SR8 design is intended for multimode fiber (MMF).

Q5: What wavelength does the QDD-400G-SR8 use?
The transceiver operates at an 850nm-class optical wavelength.

Q6: What is the reach of the QDD-400G-SR8?
The module can typically support up to approximately 70 meters over OM3 fiber and approximately 100 meters over OM4 fiber under suitable conditions.

Q7: What connector does the QDD-400G-SR8 use?
The SR8 architecture uses an MPO-16 APC parallel-fiber optical interface.

Q8: Is the QDD-400G-SR8 suitable for AI and GPU networking?
Yes. Its 400Gbps bandwidth and high-density QSFP-DD form factor make it suitable for AI clusters, GPU fabrics, HPC environments, and high-throughput data center networks.

Q9: What is the difference between 400G SR8 and 400G DR4?
400G SR8 is designed for short-reach multimode fiber using parallel 850nm-class optics, while 400G DR4 uses single-mode fiber and is designed for longer-reach data center connectivity.

Q10: Is every QSFP-DD port compatible with the QDD-400G-SR8?
No. The host platform must support the required 400GbE optical module, electrical interface, power and thermal requirements, firmware, and transceiver coding. Always verify compatibility before deployment.

Q11: Where can I buy the QDD-400G-SR8 in Bangladesh?
You can contact Datacom Technologies (BD) for 400G QSFP-DD optical transceivers and Arista-compatible networking optics with competitive pricing, technical consultation, and nationwide delivery.