The Cisco GLC-LH-SMD is a 1000BASE-LX/LH SFP transceiver module, providing Gigabit Ethernet connectivity over fiber optic cabling. It supports both single-mode and multimode fiber, enabling long-reach connections up to 10 kilometers over single-mode fiber. This module is used to establish fiber optic links between network devices like switches and routers, ensuring reliable high-speed data transmission.
