Cisco QSFP-100G-CWDM4-S Cisco SFP/SFP+/QSFP/XFP transceiver
Brand: Cisco | Category: Transceivers & Cables
SKU: CSC-QSFP-100G-CWDM4-S | Part #: QSFP-100G-CWDM4-S | MPN: QSFP-100G-CWDM4-S
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About the Cisco QSFP-100G-CWDM4-S Cisco SFP/SFP+/QSFP/XFP transceiver
Operating across four discrete wavelengths—1271 nm, 1291 nm, 1311 nm, and 1331 nm—over OS2 single-mode fiber with a maximum reach of 2 km, the Cisco QSFP-100G-CWDM4-S delivers 100 Gbps throughput using coarse wavelength division multiplexing technology. This QSFP28 form-factor transceiver combines four 25 Gbps lanes into a single, compact module, enabling dense, cost-effective long-reach connectivity for data center and campus network operators.
The QSFP-100G-CWDM4-S (part number QSFP-100G-CWDM4-S) implements the IEEE 802.3bm 100GBASE-CWDM4 standard and CWDM4 MSA specifications, ensuring interoperability and reliability in mission-critical environments. Cisco's digitally signed firmware and integrated digital optical monitoring (DOM) provide real-time diagnostics and link integrity validation across the operating range of 0°C to 70°C. Network engineers and IT infrastructure teams will appreciate the 64B/66B encoding per lane, which optimizes signal integrity while maintaining compatibility with Cisco Nexus, Catalyst, and ASR series platforms equipped with QSFP28-capable line cards and modules. The LC duplex connector simplifies installation and reduces port footprint in high-density deployments.
Deployment Scenarios
- Inter-switch fabric links in modular Cisco Nexus chassis deployments requiring sub-3 km connectivity
- Campus backbone extensions between data center buildings using existing OS2 fiber infrastructure
- High-speed uplink aggregation in Cisco Catalyst environments with QSFP28 port support
- WDM-based network expansion without requiring separate optical multiplexing appliances
- Redundant network paths in Cisco ASR routing platforms with built-in DOM visibility
To discuss specifications, availability, and volume pricing for the Cisco QSFP-100G-CWDM4-S, contact Omnixon Global for a tailored request for quotation.
Technical Specifications
| Brand | Cisco |
| Category | Transceivers & Cables |
| SKU | CSC-QSFP-100G-CWDM4-S |
| Part Number | QSFP-100G-CWDM4-S |
| Condition | New |
| Interface | 100GbE |
| Manufacturer Part Number | QSFP-100G-CWDM4-S |
| Form Factor | QSFP28 |
| Data Rate | 100 Gbps |
| Ethernet Standard | 100GBASE-CWDM4 |
| Fiber Type | Single-Mode Fiber (SMF) |
| Connector Type | LC Duplex |
| Maximum Reach | 2 km |
| Number of Lanes | 4 x 25 Gbps |
| Wavelengths | 1271 nm, 1291 nm, 1311 nm, 1331 nm |
| Multiplexing Technology | CWDM4 (Coarse Wavelength Division Multiplexing) |
| Cable Standard | OS2 Single-Mode Fiber |
| Digital Optical Monitoring (DOM) | Yes |
| Compliance Standards | IEEE 802.3bm 100GBASE-CWDM4, CWDM4 MSA |
| Firmware Integrity Check | Cisco IOS / NX-OS digitally signed — passes integrity validation |
| Compatible Platforms | Cisco Nexus, Cisco Catalyst, Cisco ASR series (QSFP28-capable line cards and modules) |
| Operating Case Temperature | 0°C to 70°C |
| Encoding | 64B/66B per lane |
Frequently Asked Questions about Cisco QSFP-100G-CWDM4-S Cisco SFP/SFP+/QSFP/XFP transceiver
What does the Cisco QSFP-100G-CWDM4-S Cisco SFP/SFP+/QSFP/XFP transceiver do?
The Cisco QSFP-100G-CWDM4-S Cisco SFP/SFP+/QSFP/XFP transceiver is enterprise IT hardware deployed in production data centers, server rooms, and edge sites across the GCC and EMEA region.