The Cisco GLC-LH-SMD Gigabit Ethernet SFP Transceiver is a hot-swappable SFP module that provides 1 Gbps Ethernet over fiber using 1000BASE-LX/LH and supports both single-mode and multimode fiber up to 10 km on SMF, with a 1310 nm wavelength. It uses a duplex LC connector and offers DOM/DDM monitoring to help track link health, and is designed for use in Cisco switches and routers that support SFP interfaces in enterprise campus networks, metro fiber deployments, industrial automation systems, and data center interconnects. Common replacements include Cisco GLC-LH-SM, GLC-SX-MMD, and GLC-LX-SM-RGD.
