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

Arista OSFP-800G-2LR4-Arista | 800G 2x LR4 Transceiver, Single-Mode, 10km, Dual LC

OSFP-800G-2LR4-Arista

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Description

The Arista OSFP-800G-2LR4 is an 800GBASE optical transceiver designed for 10km data centre connectivity over single-mode fibre. Using 8 channels of 100Gb/s PAM4 modulation across CWDM wavelengths (1271nm, 1291nm, 1311nm, 1331nm), it delivers 800Gb/s aggregate throughput via dual duplex LC/UPC connectors. This closed finned top OSFP module enables seamless breakout to 2x 400G-LR4 or 8x 100G-LR links, making it ideal for high-density AI, HPC, and cloud data centre deployments.

Features

800Gb/s aggregate bandwidth using 8 lanes of 100Gb/s PAM4 modulation
- Dual duplex LC/UPC connectors enable physical separation of two 400G links
- CWDM4 wavelength multiplexing (1271nm, 1291nm, 1311nm, 1331nm)
- 10km reach over single-mode fibre for extended campus and metro connectivity
- IEEE 802.3ck and OSFP MSA compliant for industry-standard interoperability
- CMIS Rev 5.0 management interface for advanced monitoring and control
- Digital diagnostics monitoring (DDM) for real-time temperature, voltage, and optical power tracking
- Hot-pluggable design for minimal network disruption during installation or replacement
- Closed finned top thermal design optimised for air-cooled data centre environments
- Breakout support to 2x 400G-LR4 or 8x 100G-LR without optical breakout cables
- Low latency and high reliability for AI, HPC, and cloud workloads
- Supports spine-leaf architectures and top-of-rack to server connectivity

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.

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Technical Specifications

FAQs

Technical Specifications

Form Factor: OSFP (Octal Small Form Factor Pluggable) with closed finned top
- Data Rate: 800Gb/s aggregate (8 x 100Gb/s per lane)
- Modulation: PAM4 (Pulse Amplitude Modulation 4-level)
- Wavelengths: 1271nm, 1291nm, 1311nm, 1331nm (CWDM4)
- Connector Type: Dual duplex LC/UPC (2x LC duplex)
- Fibre Type: Single-mode fibre (SMF OS2 G.652)
- Maximum Distance: 10km
- Transmit Power: -2.7 to +5.1 dBm per lane
- Receiver Sensitivity: -9 to +5.1 dBm per lane
- Electrical Interface: 8x 106.25Gb/s PAM4
- Maximum Power Consumption: Typically <18W
- Digital Diagnostics: DDM/DOM supported (temperature, voltage, optical power monitoring)
- Standards Compliance: IEEE 802.3ck, OSFP MSA, CMIS Rev 5.0
- Operating Temperature: 0°C to 70°C (commercial)
- Breakout Capability: Supports 2x 400G-LR4 or 8x 100G-LR interoperability

FAQs

Q: What distance can the OSFP-800G-2LR4 support?
A: This transceiver supports up to 10km transmission over OS2 single-mode fibre (SMF G.652), making it suitable for campus, metro, and data centre interconnects.

Q: Can this 800G transceiver break out to lower-speed connections?
A: Yes, the OSFP-800G-2LR4 supports breakout configurations to 2x 400GBASE-LR4 OSFP or QSFP-DD transceivers, or 8x 100GBASE-LR QSFP modules, without requiring optical breakout cables due to its dual LC duplex connector design.

Q: Is this transceiver compatible with Arista 800G switches?
A: Yes, the OSFP-800G-2LR4 is designed for Arista 800G OSFP platforms and is fully compliant with OSFP MSA and IEEE 802.3ck standards, ensuring seamless integration with Arista switching infrastructure.

Q: What cooling design does this transceiver use?
A: This module features a closed finned top design with fins enclosed by a lid to create a closed cooling channel for enhanced thermal management in air-cooled data centre environments.

Q: What type of fibre cable is required?
A: The OSFP-800G-2LR4 requires OS2 single-mode fibre (SMF) with duplex LC/UPC connectors. Two duplex LC cables are needed to support the full 800Gb/s data rate.

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