• Silver-colored arista H-D400-4Q100-1M sfp+ transceiver modules with blue handles and metallic connectors for 400g active DAC
1 1

Arista

Arista QDD-800G-2LR4-Arista | 800G QSFP-DD Transceiver, 2x 400G LR4, 1310nm, 10km

QDD-800G-2LR4-Arista

Stock Status: Enquire

Request Quote
Sale Sold out
Taxes included. Shipping calculated at checkout.

Description

The Arista QDD-800G-2LR4 is an 800 Gigabit QSFP-DD optical transceiver designed for high-bandwidth data center and enterprise applications. It delivers 2x 400GBASE-LR4 connectivity over dual duplex LC connectors, reaching up to 10km on single-mode fiber. With 8 lanes of 106.25Gbps PAM4 modulation and dual-rate support, it enables direct 800G-to-2x400G breakout without additional cables, providing flexible, future-ready network expansion.

Features

8 electrical lanes operating at 106.25Gbps per lane with PAM4 modulation
- Dual duplex LC connectors enable 2x 400G breakout without breakout cables
- Supports dual-rate operation: 2x 400GBASE-LR4 or 2x 200GBASE-LR4
- Up to 10km transmission over single-mode fiber (OS2)
- Built-in Broadcom DSP chip with advanced equalization and FEC
- Digital diagnostics monitoring (DDM) for real-time parameter tracking
- Hot-pluggable QSFP-DD form factor for easy installation
- Interoperable with OSFP and QSFP-DD 400G LR4 modules
- CWDM wavelength grid near 1310nm (ITU G.694.2 compliant)
- Low bit error rate with integrated forward error correction
- Compatible with Arista 800G switches and platforms
- Supports 4x 200G breakout configurations on compatible platforms

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

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

View full details

specs-tabs

Technical Specifications

FAQs

Technical Specifications

Form Factor: QSFP-DD
- Data Rate: 800Gbps (8x 106.25Gbps per lane), dual-rate 2x 400G / 2x 200G
- Wavelength: 1271nm, 1291nm, 1311nm, 1331nm (CWDM near 1310nm)
- Connector Type: Dual duplex LC/UPC
- Fiber Type: Single-mode fiber (SMF)
- Maximum Distance: Up to 10km over duplex SMF
- Modulation: PAM4 (Pulse Amplitude Modulation 4-level)
- Power Consumption: Typical 16W (800G transceivers)
- Digital Diagnostics: DDM (Digital Diagnostics Monitoring) supported
- Standards Compliance: IEEE 802.3bs, 800GBASE-LR8 / 2x 400GBASE-LR4
- Interoperability: Compatible with 2x 400G-LR4 OSFP/QSFP-DD or 2x 200G-LR4 QSFP modules
- Operating Temperature: Commercial: 0°C to +70°C
- Built-in DSP: Broadcom DSP chip with FEC for link reliability

FAQs

Q: What is the QDD-800G-2LR4 used for?
A: The QDD-800G-2LR4 is designed for 800 Gigabit Ethernet links in data centers, high-performance computing environments, and enterprise networks. It supports 800G to 2x 400G breakout applications over 10km of single-mode fiber without requiring optical breakout cables.

Q: Can this transceiver break out to 2x 400G links?
A: Yes, the QDD-800G-2LR4 features dual duplex LC connectors that enable two physically distinct 400GBASE-LR4 links from a single 800G port. Each connector can directly connect to a separate 400G LR4 QSFP-DD or OSFP module without breakout cables.

Q: Is the QDD-800G-2LR4 compatible with 400G equipment?
A: Yes, this module interoperates with 2x 400G-LR4 OSFP or QSFP-DD transceivers and also supports dual-rate operation with 2x 200G-LR4 QSFP modules. It provides flexible connectivity for mixed 800G, 400G, and 200G network environments.

Q: Can 800G QSFP-DD modules be used in 400G ports?
A: No, 800G QSFP-DD transceivers require ports that support 8x 100Gbps electrical lanes. However, 400G QSFP-DD modules can be used in 800G QSFP-DD ports when the port is configured for lower data rates.

Q: What is the power consumption and thermal consideration?
A: The QDD-800G-2LR4 typically consumes 16W, which is standard for 800G QSFP-DD optical transceivers. Ensure your switch platform supports adequate power and cooling for 800G modules, as they draw more power than 400G transceivers.

Recently Viewed

  • Request a Quote

    Looking for competitive pricing? Submit a request, and our team will provide a tailored quote that fits your needs.

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Call us Now  

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Contact us