• Silver-colored Arista QDD-400G-ZR2 SFP+ transceiver modules with blue handles and metallic connectors for 400G coherent use
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Arista

Arista QDD-400G-ZR2 | 400G-ZR QSFP-DD Coherent Transceiver, 120km, C-Band

Arista QDD-400G-ZR2 | 400G-ZR QSFP-DD Coherent Transceiver, 120km, C-Band

QDD-400G-ZR2

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Description

The Arista QDD-400G-ZR2 is a 400GBASE-ZR QSFP-DD Digital Coherent Optical (DCO) transceiver engineered for high-density data centre interconnect (DCI) over duplex single-mode fibre. Supporting up to 40km unamplified and up to 120km with EDFA amplification, it uses DP-16QAM modulation with C-FEC per the OIF-400ZR MSA standard, enabling both 400GbE single-wavelength and 4x100GbE breakout modes across ITU C-Band tunable wavelengths. The integrated coherent DSP eliminates the need for external transponders, dramatically simplifying metro and campus DCI architectures.

Compliant with OIF-400ZR MSA, QSFP-DD MSA, and IEEE 802.3bs, the QDD-400G-ZR2 delivers multi-vendor interoperability and real-time digital optical monitoring (DOM) for proactive network management. Its full C-Band tunability allows flexible DWDM channel assignment suited to hyperscale and metro edge deployments. Need it fast? iptrading.com.au delivers across Australia — shop now.

Features

- ITU C-Band full tunability for flexible DWDM channel assignment without hardware changes
- Supports 400GbE single-wavelength mode and 4x100GbE breakout for deployment flexibility
- OIF-400ZR MSA compliant — ensures multi-vendor interoperability across compatible platforms
- Integrated coherent DSP (Digital Coherent Optics) eliminates need for external transponders
- Up to 40km unamplified reach for short-haul DCI; up to 120km amplified for metro DCI
- Real-time digital optical monitoring (DOM) of Tx power, Rx power, temperature, and voltage
- Designed for hyperscale data centre interconnect and metro edge applications
- Compact QSFP-DD form factor enables high port-density coherent deployments

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: 400GBASE-ZR (400GbE or 4x100GbE breakout)
- Maximum Reach: Up to 120km over duplex SMF with EDFA amplification
- Unamplified Reach: Up to 40km over duplex SMF
- Fibre Type: G.652 Single-Mode Fibre (SMF)
- Connector Type: LC Duplex
- Wavelength: ITU C-Band Tunable (~1550nm)
- Modulation: 400G DP-16QAM
- FEC: C-FEC (Concatenated FEC per OIF-400ZR MSA)
- Power Consumption: <18W
- Operating Temperature: 0°C to 70°C (Commercial)
- Digital Optical Monitoring (DOM/DDM): Yes
- Compliance: OIF-400ZR MSA, QSFP-DD MSA, IEEE 802.3bs, RoHS

FAQs

Q: What is the maximum reach of the Arista QDD-400G-ZR2 transceiver?
A: The QDD-400G-ZR2 supports up to 40km unamplified over duplex G.652 single-mode fibre (SMF), and up to 120km when used with EDFA amplification and Mux-Demux equipment, making it suitable for both short-haul and metro DCI deployments.

Q: Does the QDD-400G-ZR2 support breakout mode?
A: Yes. It supports both 400GbE single-wavelength operation and 4x100GbE breakout mode, providing flexible connectivity options for data centre interconnect and aggregation scenarios.

Q: Is the QDD-400G-ZR2 compatible with non-Arista equipment?
A: The QDD-400G-ZR2 is compliant with the OIF-400ZR MSA standard, which enables multi-vendor interoperability with other OIF-400ZR compliant platforms. For Arista platform compatibility, refer to the 400ZR DCI Solution Data Sheet.

Q: What fibre type and connector does the QDD-400G-ZR2 require?
A: It requires G.652 single-mode fibre (SMF) and uses an LC Duplex connector. It is not compatible with multimode fibre.

Q: Does the QDD-400G-ZR2 support digital optical monitoring?
A: Yes. The transceiver includes real-time digital optical monitoring (DOM/DDM), allowing network operators to monitor key operating parameters such as Tx/Rx power, temperature, and voltage directly from the host platform.

Q: Can I purchase the Arista QDD-400G-ZR2 in Australia through IP Trading?
A: Yes. IP Trading is an Australian B2B IT hardware reseller stocking Arista transceivers including the QDD-400G-ZR2. Orders are dispatched across Australia with fast fulfilment — visit iptrading.com.au to order or enquire.

Datasheet

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