QSFP-100G-CWDM4-S Genuine Cisco QSFP-100G-CWDM4-S 100GBASE CWDM4 QSFP for SMF

Cisco QSFP-100G-CWDM4-S – 100GBASE‑CWDM4 QSFP28 2 km Optical Transceiver Module

The Cisco QSFP-100G-CWDM4-S is a 100GBASE‑CWDM4 QSFP28 optical transceiver designed for cost‑effective 100‑Gigabit Ethernet connectivity up to 2 km over single‑mode fiber (SMF). Using four CWDM wavelengths carried over a duplex LC connection, it delivers high‑density, low‑power 100G performance ideal for data center spine‑leaf fabrics, enterprise core networks, and cloud environments. Fully compliant with the CWDM4 MSA standard, it ensures broad interoperability across Cisco switching and routing platforms.

🔧 Key Specifications

• Form Factor: QSFP28
• Data Rate: 100 Gbps
• Reach: Up to 2 km over single‑mode fiber (SMF)
• Wavelengths: 4‑lane CWDM (1271, 1291, 1311, 1331 nm)
• Connector Type: Duplex LC
• Fiber Type: Single‑mode (OS2)
• Transmit Technology: 4x 25G optical lanes multiplexed to 100G
• Power Consumption: Low‑power QSFP28 design
• Operating Temperature: 0°C to 70°C (standard)
• Standards Compliance: CWDM4 MSA, IEEE 802.3 100GBASE‑CWDM4
• Digital Diagnostics: Supported (DOM)

🧩 Ideal Use Cases

• Data center spine‑leaf fabrics requiring efficient 100G interconnects
• Enterprise core networks upgrading to 100G with moderate‑reach optics
• Cloud and virtualization environments needing high‑density 100G connectivity
• Cost‑optimized 100G deployments using CWDM4 MSA‑compliant optics

⚙️ Platform & Compatibility

• Compatible with Cisco Nexus, Catalyst, and routing platforms supporting QSFP28
• Interoperable with CWDM4 MSA‑compliant 100G optics
• Supports DOM for real‑time optical monitoring
• Hot‑swappable for simplified maintenance and upgrades