Cisco QSFP-100G-LR4-S Compatible 100GBASE-LR4 QSFP28 Optical Transceiver Module | LC 10km SMF DOM

The Cisco Compatible QSFP-100G-LR4-S is a high-performance 100GBASE-LR4 QSFP28 optical transceiver designed for long-range 100 Gigabit Ethernet transmission over single-mode fiber (SMF). Operating through four CWDM wavelengths around 1310nm, this module supports reliable 100Gbps connectivity up to 10 kilometers using standard duplex LC fiber infrastructure.

Built according to IEEE 802.3ba, QSFP28 MSA, and SFF-8636 standards, the transceiver integrates advanced LAN-WDM optical technology, enabling efficient long-distance data transmission with low power consumption and stable optical performance. The module converts 4 independent 25Gbps electrical channels into 4 CWDM optical lanes and multiplexes them into a single duplex LC interface for high-density 100G networking applications.

Designed for seamless compatibility with Cisco Nexus, Catalyst, UCS, and enterprise switching platforms, the QSFP-100G-LR4-S provides plug-and-play interoperability without unsupported transceiver warnings. Featuring Digital Optical Monitoring (DOM/DDM), network administrators can monitor temperature, voltage, transmit power, receive power, and laser bias current in real time for proactive network management.

With excellent transmission stability, enterprise-grade reliability, and cost-effective deployment, the QSFP-100G-LR4-S is widely used in cloud data centers, telecom networks, enterprise backbone systems, disaster recovery links, and high-speed campus interconnect infrastructures.

Figure 1 shows the front panel of QSFP-100G-LR4-S.

• Supports 100GBASE-LR4 Ethernet applications
• Transmission up to 10km over single-mode fiber
• Duplex LC optical interface
• LAN-WDM CWDM optical technology
• Integrated Digital Optical Monitoring (DOM/DDM)
• Low power consumption below 4.5W
• Hot-swappable QSFP28 form factor
• Fully compliant with IEEE 802.3ba standards
• Optimized for Cisco networking platforms
• High reliability for enterprise and telecom networks

As enterprise networks and cloud infrastructures continue transitioning toward high-density 100G Ethernet architectures, long-range interconnection requirements have become increasingly critical. Traditional short-range multimode optics are insufficient for campus backbones, inter-building connectivity, and telecom aggregation layers requiring reliable long-distance transmission.

The Cisco Compatible QSFP-100G-LR4-S solves these challenges by delivering stable 100Gbps optical transmission across distances up to 10 kilometers using standard duplex single-mode fiber infrastructure.

The module supports transmission up to 10km over SMF, making it ideal for enterprise campus interconnects, metro aggregation, cloud networking, and disaster recovery applications.

Unlike parallel optics requiring MPO interfaces and multiple fiber lanes, LR4 technology multiplexes four optical wavelengths into a single duplex LC connection, simplifying cabling and reducing fiber consumption.

The transceiver is pre-programmed for Cisco platforms, ensuring immediate recognition without compatibility alarms or unsupported hardware warnings.

Featuring low power consumption, industrial-grade optical components, and integrated DOM monitoring, the module ensures stable operation in mission-critical environments.

By utilizing standard duplex LC single-mode fiber infrastructure, the module reduces deployment cost, simplifies maintenance, and minimizes operational complexity.

The Cisco Compatible QSFP-100G-LR4-S is widely deployed in:

• Cloud Data Centers
• Enterprise Backbone Networks
• Telecom Transmission Systems
• Campus Interconnect Networks
• Metro Ethernet Infrastructure
• Disaster Recovery Connectivity
• Spine-Leaf Architectures
• AI and HPC Clusters
• Cisco Nexus Data Center Switches
• High-Speed Storage Networking

This QSFP28 optical transceiver is tested for compatibility with:

• Cisco Nexus Series
• Cisco Catalyst Series
• Cisco UCS Platforms
• Cisco Data Center Switches
• Enterprise Routing Systems

Customized EEPROM coding ensures seamless interoperability and stable operation across Cisco operating systems.

The integrated DOM/DDM functionality allows administrators to monitor:

• Module temperature
• Supply voltage
• Transmit optical power
• Receive optical power
• Laser bias current

This improves network visibility and enables proactive maintenance before optical degradation impacts service performance.

Yes. The module is fully compatible with Cisco Nexus, Catalyst, and UCS platforms with seamless plug-and-play deployment.

The module supports up to 10 kilometers over standard single-mode fiber infrastructure.

The QSFP-100G-LR4-S uses a standard duplex LC optical interface.

Yes. Full Digital Optical Monitoring is supported for temperature, voltage, Tx/Rx optical power, and laser diagnostics.

LR4 supports much longer transmission distances over duplex LC single-mode fiber, while SR4 is designed for short-range multimode fiber applications.

Yes. The QSFP28 transceiver supports hot-pluggable installation and removal without shutting down the host equipment.

We provide:

• 1-Year Warranty
• Lifetime Technical Support
• Compatibility Verification
• Global Shipping
• OEM & ODM Services