• Cisco QDD-2X100-LR4-S QSFP-DD transceiver with blue sound wave logo
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Cisco

Cisco QDD-2X100-LR4-S | 2x100G breakout | QSFP-DD | 100GBASE-LR4 x2 | 1295–1310 nm LAN‑WDM | 10 km SMF | dual CS (dual‑LC compatible)

QDD-2X100-LR4-S

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Description

QSFP-DD 200G breakout transceiver delivering two independent 100GBASE-LR4 links over single‑mode fiber up to 10 km per leg. Each breakout channel uses LAN‑WDM wavelengths in the 1310 nm window and interoperates with standard 100GBASE‑LR4 optics. Dual CS connector exposes two duplex circuits for compact patching or CS‑to‑dual‑LC harnesses. Requires device support for 2x100G breakout.

Features

- Two 100G LR4 links from a single QSFP-DD port
- 10 km reach per leg for metro and campus backbones
- LAN‑WDM wavelengths ensure LR4 interoperability
- Space‑saving dual CS front connector
- DOM for real-time link monitoring
- Reduces optics count and switch faceplate usage

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-DD (200G host)
- Breakout mode: 2x 100G
- Optical standard (each 100G): IEEE 100GBASE-LR4
- Wavelengths (per 100G): LAN-WDM ~1295.6, 1300.1, 1304.6, 1309.1 nm
- Reach: up to 10 km over G.652 SMF
- Front connector: dual CS (supports two duplex LC circuits via CS harness)
- Host interface: 8x 25G electrical lanes
- FEC: host FEC recommended/required per platform
- Digital diagnostics (DOM/DDM): supported
- Management: CMIS compliant
- Operating temperature: 0 to 70 °C
- Platform requirement: QSFP-DD port with 2x100G breakout support

FAQs

Q: Is it compatible with standard 100GBASE-LR4 optics?
A: Yes. Each breakout leg links to a conventional 100GBASE-LR4 module over SMF up to 10 km.

Q: What connector does the module use?
A: Dual CS on the front panel. Use a CS patch or a CS-to-dual-LC harness to reach standard LC LR4 ports.

Q: Can I use it without enabling breakout?
A: No. The host port must be configured for 2x100G breakout mode.

Q: Does it support DOM?
A: Yes. Digital optical monitoring is supported for link health and diagnostics.

Q: Which fiber type is required?
A: Single‑mode fiber (G.652) is required for LR4 operation.

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