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Arista OSFP-800G-2LR4 2 × 400GBASE-LR4 OSFP 1271-1331nm 10 km SMF
800 Gbps 2 × 400GBASE-LR4 OSFP transceiver, 1271–1331 nm (4 lambda CWDM), up to 10 km SMF, 0 to 70 °C case temperature.
- Manufacturer
- Arista Networks, Inc.
- Mfr part number
- OSFP-800G-2LR4
- Series
- 800G OSFP
- Category
- Fiber optic transceiver modules
- Datasheet
- OSFP-800G-2LR4 datasheet (PDF)
OSFP-800G-2LR4 specifications
| Attribute | Value |
|---|---|
| Part Number | OSFP-800G-2LR4 |
| Manufacturer | Arista Networks, Inc. |
| Brand | Arista Networks |
| Standard | 2 × 400GBASE-LR4 |
| Form Factor | OSFP, hot-swappable |
| Data Rate | 800 Gbps |
| Wavelength | 1271–1331 nm (4 lambda CWDM) |
| Media | 2 pairs duplex single-mode |
| Max Distance | 10 km SMF |
| Connector | 2 × duplex LC |
| Tx Power | −2.7 to +5.1 dBm/lane |
| Rx Power | −9 to +5.1 dBm/lane |
| Breakout | 2 × 400G-LR4 |
| Max Power | 16 W |
| Case Temp | 0 °C to 70 °C |
| Dimensions | 13.0 × 22.6 × 100.4 mm |
| Compliance | IEEE 802.3, OSFP MSA |
| Reach detail | 10 km over two pairs of duplex single-mode fiber (interoperates with 2 × 400G-LR4) |
All values are from Arista Networks' published Optics Modules and Cables data sheet (Sep 2026). Confirm platform support for your switch with us before ordering.
About the Arista OSFP-800G-2LR4
The Arista OSFP-800G-2LR4 is a hot-swappable OSFP 2 × 400GBASE-LR4 optical transceiver for 800 Gbps Ethernet over 2 pairs duplex single-mode, with a 2 × duplex LC interface and reach of up to 10 km SMF. It also supports breakout to 2 × 400G-LR4. Typical uses: 800G AI/ML back-end fabrics, hyperscale spine layers and 2 × 400G / 8 × 100G breakout.
- 800 Gbps 2 × 400GBASE-LR4 up to 10 km SMF
- Breakout: 2 × 400G-LR4
- 800G in a single OSFP port
- 2 × duplex LC connector · 2 pairs duplex single-mode
- Genuine Arista optic · GST invoice · pan-India dispatch
OSFP-800G-2LR4: frequently asked questions
What is the Arista OSFP-800G-2LR4?
The Arista OSFP-800G-2LR4 is a OSFP 2 × 400GBASE-LR4 module from Arista Networks for 800 Gbps links. It plugs into a OSFP port on an Arista switch and is used for 800G AI/ML back-end fabrics, hyperscale spine layers and 2 × 400G / 8 × 100G breakout.
What is the maximum distance of the OSFP-800G-2LR4?
Arista specifies the OSFP-800G-2LR4 for 10 km over two pairs of duplex single-mode fiber (interoperates with 2 × 400G-LR4).
What are the transmit and receive power levels of the OSFP-800G-2LR4?
Per Arista's published optics data sheet, the OSFP-800G-2LR4 transmits −2.7 to +5.1 dBm/lane and receives −9 to +5.1 dBm/lane.
Which fiber and connector does the OSFP-800G-2LR4 need?
The OSFP-800G-2LR4 uses a 2 × duplex LC connector on 2 pairs duplex single-mode, at 1271–1331 nm (4 lambda CWDM). Both ends of the link must use the same optical standard.
Is the OSFP-800G-2LR4 compatible with my Arista switch?
It works in Arista switches with OSFP ports that support this optic. Send us your switch model and EOS version and we will check it against Arista's Transceiver and Cable Guide before dispatch, so you only receive a module that works in your port.
OSFP vs QSFP-DD: which 800G version do I need?
Pick the form factor that matches your Arista switch port. Arista offers 800G platforms in both OSFP and QSFP-DD variants; modules with the same optical standard interoperate over the fibre, but are not mechanically interchangeable.
Does the OSFP-800G-2LR4 support breakout?
Yes. Arista lists breakout to 2 × 400G-LR4. Use the matching optics at the far end and a suitable breakout cable or patch panel.
Is your OSFP-800G-2LR4 genuine Arista?
Yes. Next Gen Networks supplies original Arista Networks optics, not third-party lookalikes or grey-market stock. Every unit is checked before dispatch, and we share the serial numbers on request so you can verify them in EOS ('show inventory').
What is the OSFP-800G-2LR4 price in India and how do I order?
The Arista OSFP-800G-2LR4 price in India depends on quantity, delivery city and current stock. Next Gen Networks supplies it with a GST invoice (input tax credit ready) and pan-India dispatch from New Delhi. Send the part number, quantity and delivery city on WhatsApp +91-7827955775 or email Sales@nextgennetworks.in and we reply with a GST quote.
How much power does the OSFP-800G-2LR4 draw?
Arista lists maximum power of 16 W for the OSFP-800G-2LR4. Check your switch's per-port power budget for dense deployments.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Arista family datasheet
Related Arista parts
OSFP-800G-2XDR42 × 400GBASE-XDR4 / 8 × 100G-FR, 2 km SMFOSFP-800G-2PLR42 × 400GBASE-PLR4 / 8 × 100G-LR, 10 km SMFOSFP-800G-2FR42 × 400GBASE-FR4, 2 km SMFOSFP-800G-2VSR42 × 400GBASE-VSR4, 30 m OM3 / 50 m OM4OSFP-800G-VSR8800GBASE-VSR8, 30 m OM3 / 50 m OM4OSFP-800G-XDR8800G-XDR8, 2 km SMFGovernment, PSU and enterprise orders welcome. GST invoice and pan-India delivery.
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