The Cisco QSFP-100G-LR-S is a high-speed optical transceiver module designed for 100 Gigabit Ethernet (100G) connectivity over long-distance single-mode fiber networks. It is widely used in data centers, enterprise core networks, and service provider environments where reliable long-range transmission is required.
This module uses the QSFP28 form factor and supports a data rate of 100 Gbps, delivering high bandwidth with low power consumption. It operates over single-mode fiber (SMF) using a duplex LC connector and supports transmission distances of up to 10 km, making it suitable for inter-building or long-distance data center links.
The QSFP-100G-LR-S is based on 100GBASE-LR1 technology, utilizing PAM4 modulation on a single wavelength (~1310 nm) along with Forward Error Correction (FEC) to ensure stable and efficient data transmission.
It is a hot-swappable module, allowing easy installation and replacement without network downtime. Additionally, it supports Digital Optical Monitoring (DOM), enabling real-time monitoring of parameters such as temperature, voltage, and optical power for better network management and troubleshooting.
This transceiver is commonly deployed in spine-leaf architectures, aggregation layers, and high-speed uplinks, especially in modern data centers transitioning to 100G infrastructure.
🔑 Key Features:
100GBASE-LR QSFP28 optical transceiver
Up to 10 km transmission over single-mode fiber (SMF)
Duplex LC connector interface
1310 nm wavelength with PAM4 modulation
Hot-swappable design
Supports FEC and Digital Optical Monitoring (DOM)
Low power consumption (~4.5W)
Compliant with IEEE 802.3 standards
