Description
The Cisco QSFP-100G-LR4-I is a high-performance 100 Gigabit Ethernet transceiver module designed for long-range data transmission over single-mode fiber (SMF). Built in the QSFP28 form factor, this module supports a maximum link length of up to 10 kilometers, making it ideal for data center interconnects, enterprise core networks, and service provider applications. It operates over four wavelengths in the 1310 nm range and uses duplex LC connectors for optical connectivity. The “I” variant indicates extended temperature support, making it suitable for deployments in more demanding environmental conditions.
This module is compliant with the IEEE 802.3ba 100GBASE-LR4 standard and supports Digital Optical Monitoring (DOM) for real-time diagnostics of key parameters such as optical power, temperature, and voltage. Internally, it integrates four 25 Gbps lanes using LAN WDM multiplexing, which are combined into a single 100 Gbps signal. The QSFP-100G-LR4-I is hot-swappable, allowing for easy installation and replacement without network disruption. When purchasing used, buyers can expect robust design and reliable performance, assuming the module has been properly tested and verified for reuse.