• Vibrant pink glossy Juniper QDD-2X400G-LR4-P QSFP-DD transceiver sticker
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Juniper

Juniper QDD-2X400G-LR4-P | 2x400G QSFP-DD800 | 400GBASE-LR4-10 | 1310 nm CWDM4 | 10 km SMF | Dual LC duplex (paired)

QDD-2X400G-LR4-P

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Description

QSFP-DD800 optical module that breaks one 800G port into two 400G LR4-10 links over single-mode fiber up to 10 km. Ideal for high-density aggregation where 2x400G is required from a single cage. CWDM4 optics around 1310 nm with paired dual LC duplex connectors; host-side FEC required. Supports DOM and interops with standards-compliant 400GBASE-LR4-10 using LC on the far end.

Features

- Two independent 400G LR4-10 links from a single module
- 10 km SMF reach for core and metro aggregation
- Paired dual LC duplex connectors for easy patching
- IEEE 802.3cu compliance for broad compatibility
- DOM support for monitoring optical health
- Requires KP4 FEC on host for robust PAM4 signaling

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: QSFP-DD800
- Port breakout: 2x400G
- Optical standard: 400GBASE-LR4-10 (IEEE 802.3cu)
- Wavelengths: CWDM4 around 1310 nm (4 lanes)
- Fiber type: SMF (OS2 recommended)
- Reach: up to 10 km
- Connector: Dual LC duplex (paired, one LC duplex per 400G link)
- Operating temperature: 0 to 70 C
- FEC: Host-side KP4 (RS(544,514)) required
- DDM/DOM: Supported
- Use case: 800G to dual 400G LR4-10 breakout deployments

FAQs

Q: Is this interchangeable with CS-connector LR4-10 modules?
A: Optically yes if the far end matches the connector type; this unit uses LC duplex per 400G link.

Q: What is the recommended fiber type?
A: OS2 single-mode fiber for distances up to 10 km.

Q: Does it support link diagnostics?
A: Yes, digital diagnostics (DOM) are supported.

Q: Do I need a specific breakout configuration?
A: Your 800G host port must support 2x400G breakout mode.

Q: Can it connect to standard 400G LR4-10 ports?
A: Yes, it interoperates with standards-compliant 400GBASE-LR4-10 using LC.

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