• Silver-colored arista qdd-400g-srbd1 400g qsfp-dd transceiver modules with blue handles and metallic connectors
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Arista

Arista QDD-400G-SRBD1 | 400G QSFP-DD Transceiver, 400G-BIDI, MPO-12, 100m OM4

Arista QDD-400G-SRBD1 | 400G QSFP-DD Transceiver, 400G-BIDI, MPO-12, 100m OM4

QDD-400G-SRBD1

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Description

The Arista QDD-400G-SRBD1 is a 400GBASE-SR4.2 QSFP-DD optical transceiver designed for short-reach 400G data centre interconnects over parallel multimode fibre. Using BiDi technology with 850nm/910nm wavelengths and PAM4 modulation, it delivers 400G links up to 70m over OM3 MMF or 100m over OM4 MMF via an MPO-12 UPC connector. Software configurable through Arista EOS, it supports point-to-point 400GE deployments or breakout into 4x 100GBASE-BIDI or 4x 100GBASE-SR1.2 links — providing outstanding flexibility for spine-leaf and high-density switching environments.

Fully compliant with IEEE 400GBASE-SR4.2, the QDD-400G-SRBD1 integrates seamlessly with Arista's EOS and CloudVision platforms for unified management and telemetry. It is interoperable with other 400G-BIDI and 400G-SR4.2 modules, making it a versatile choice for mixed-vendor data centre builds. Get it now at iptrading.com.au — authentic hardware, reliable service.

Features

- Software configurable for point-to-point 400GE (400GBASE-SR4.2) operation via Arista EOS
- Flexible breakout to 4x 100GBASE-BIDI (100G-SRBD) links for high-density deployments
- Breakout to 4x 100GBASE-SR1.2 links for legacy 100G infrastructure integration
- IEEE 400GBASE-SR4.2 compliant — standards-based interoperability
- Interoperable with other 400G-BIDI and 400G-SR4.2 modules across vendors
- Full integration with Arista EOS and CloudVision for unified management and telemetry
- Plug-and-Play operation — minimal configuration required

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Datasheet

Technical Specifications

- Form Factor: QSFP-DD
- Data Rate: 400G (400GBASE-SR4.2 / 400G-BIDI)
- Connector: MPO-12 UPC
- Fiber Type: Parallel Multimode Fiber (MMF)
- Max Reach: 70m over OM3 MMF / 100m over OM4 MMF
- Wavelengths: 850nm (TX) / 910nm (RX) — BiDi
- Modulation: PAM4
- Breakout Support: 4x 100GBASE-BIDI (100G-SRBD) or 4x 100GBASE-SR1.2
- IEEE Compliance: 400GBASE-SR4.2

FAQs

Q: What fibre type and maximum reach does the QDD-400G-SRBD1 support?
A: The QDD-400G-SRBD1 supports parallel multimode fibre (MMF) with a maximum reach of 70 metres over OM3 MMF and 100 metres over OM4 MMF, using an MPO-12 UPC connector.

Q: Can the QDD-400G-SRBD1 be used in breakout mode?
A: Yes. The transceiver is software configurable to break out into either 4x 100GBASE-BIDI (100G-SRBD) or 4x 100GBASE-SR1.2 links, making it highly flexible for mixed-speed data centre environments.

Q: Is the QDD-400G-SRBD1 compatible with non-Arista switches?
A: The module is IEEE 400GBASE-SR4.2 compliant and is designed to interoperate with other 400G-BIDI and 400G-SR4.2 modules. For guaranteed compatibility, verify support with your specific third-party platform before deployment.

Q: Which Arista platforms support the QDD-400G-SRBD1?
A: The QDD-400G-SRBD1 is compatible with Arista switches that feature QSFP-DD ports and support 400GBASE-SR4.2, including platforms in the 7050X4, 7060X4, and 7060X5 series. Full integration with Arista EOS and CloudVision is supported.

Q: Can I purchase the Arista QDD-400G-SRBD1 in Australia?
A: Yes. The QDD-400G-SRBD1 is available through iptrading.com.au, an Australian B2B IT hardware reseller supplying authentic Arista optics to enterprise and data centre customers across Australia.

Q: What does BiDi mean for this transceiver, and why does it matter?
A: BiDi (Bidirectional) means the transceiver uses two different wavelengths — 850nm and 910nm — on each fibre strand to transmit and receive simultaneously. This allows 400G operation over standard parallel MMF cabling infrastructure without requiring additional fibre runs, reducing deployment cost and complexity.

Datasheet

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