Cisco QSFP-100G-SR1.2 Compatible 100GBASE-SR1.2 BiDi QSFP28 Optical Transceiver

The Cisco Compatible QSFP-100G-SR1.2 is a high-performance 100GBASE-SR1.2 BiDi QSFP28 optical transceiver designed for short-range 100 Gigabit Ethernet applications in modern data centers and enterprise network environments. Operating at dual wavelengths of 850nm and 910nm over duplex multimode fiber (MMF), this module delivers reliable 100Gbps data transmission up to 100 meters via OM4 fiber infrastructure.

Unlike traditional 100G SR4 optical modules that require MPO-12 multi-fiber cabling, the QSFP-100G-SR1.2 utilizes a standard duplex LC interface, allowing enterprises to reuse existing LC multimode fiber cabling systems. This significantly reduces deployment costs, simplifies cable management, and accelerates 100G network upgrades without major infrastructure replacement.

Engineered in compliance with IEEE 802.3bm, QSFP28 MSA, and SFF-8636 standards, the transceiver supports Digital Optical Monitoring (DOM/DDM), enabling real-time monitoring of temperature, voltage, transmit optical power, receive optical power, and laser bias current through Cisco operating systems.

Optimized for Cisco Nexus, Catalyst, UCS, and other compatible switching platforms, the module offers seamless interoperability, stable optical performance, low power consumption, and enterprise-grade reliability, making it a cost-effective alternative to original Cisco optics for cloud computing, AI networking, high-performance computing (HPC), and spine-leaf data center architectures.

Figure 1 shows the front panel of QSFP-100G-SR1.2.

• Supports 100GBASE-SR1.2 Ethernet transmission
• Dual wavelength operation at 850nm and 910nm
• Duplex LC optical interface
• Reuse existing LC multimode fiber infrastructure
• Supports up to 150m transmission over OM5 fiber
• Low power consumption below 3.5W
• Fully compliant with QSFP28 MSA standards
• Integrated Digital Optical Monitoring (DOM/DDM)
• Hot-swappable QSFP28 form factor
• Excellent compatibility with Cisco switches and routers
• Optimized for high-density data center deployment

Traditional 100G SR4 transceivers rely on MPO-12 interfaces and require 8-core multimode fiber infrastructure, which increases cabling complexity and deployment costs. In contrast, the QSFP-100G-SR1.2 BiDi transceiver uses standard duplex LC connectors, enabling direct migration from existing 10G and 40G LC fiber networks to 100G Ethernet.

This architecture greatly reduces fiber upgrade expenses, minimizes operational disruption, and simplifies cable management in enterprise and hyperscale data centers.

• Lower infrastructure upgrade costs
• Supports existing duplex LC cabling
• Simplified installation and maintenance
• Reduced cable congestion
• Lower total cost of ownership (TCO)
• Ideal for high-density 100G deployments
• Reliable interoperability with Cisco platforms

The Cisco Compatible QSFP-100G-SR1.2 transceiver is widely used in:

• Cloud Data Centers
• Enterprise Core Networks
• Cisco Nexus Switches
• Spine-Leaf Network Architectures
• AI Computing Clusters
• High-Performance Computing (HPC)
• Hyper-Converged Infrastructure (HCI)
• Storage Area Networks (SAN)
• 100G Ethernet Interconnects
• Data Center Aggregation Layers

This QSFP28 transceiver is tested for compatibility with various Cisco platforms, including:

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

Custom EEPROM programming ensures seamless plug-and-play operation without compatibility alarms or unsupported transceiver warnings.

The integrated DOM/DDM functionality allows network administrators to monitor optical performance in real time, including:

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

This proactive monitoring capability helps reduce downtime and simplifies network troubleshooting.

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

The transceiver uses duplex multimode fiber (MMF) with standard LC connectors.

Supported fiber types include:

• OM3
• OM4
• OM5

• OM3 MMF: up to 70 meters
• OM4 MMF: up to 100 meters
• OM5 MMF: up to 150 meters

Yes. Full Digital Optical Monitoring functionality is supported for real-time diagnostics and performance monitoring.

Yes. One of the main advantages of the QSFP-100G-SR1.2 BiDi module is its ability to operate over existing duplex LC multimode fiber infrastructure.

Yes. The QSFP28 module supports hot-pluggable operation without shutting down the network equipment.

We provide:

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

The Cisco Compatible QSFP-100G-SR1.2 100GBASE-SR1.2 BiDi QSFP28 Optical Transceiver delivers a cost-effective, high-performance solution for modern 100G Ethernet networking. By enabling enterprises to reuse existing LC multimode fiber infrastructure while achieving reliable 100Gbps connectivity, this module significantly reduces upgrade costs and deployment complexity.

With low power consumption, seamless Cisco compatibility, real-time DOM monitoring, and enterprise-grade reliability, the QSFP-100G-SR1.2 is an ideal optical solution for cloud data centers, AI networks, and high-density enterprise environments.