Description
The Cisco GLC-BX40-U is a high-performance SFP (Small Form-Factor Pluggable) transceiver module designed for Gigabit Ethernet and 1G Fibre Channel applications. Engineered for single-strand fiber deployments, it operates over a single-mode fiber link spanning up to 40 kilometers, making it ideal for long-distance networking needs. This bidirectional transceiver uses a wavelength of 1310 nm for upstream transmission and is typically paired with a complementary GLC-BX40-D module for downstream communication at 1490 nm. Its compact, hot-swappable design integrates easily into Cisco switches and routers with SFP ports, ensuring minimal disruption during upgrades or replacements.
The GLC-BX40-U supports data rates up to 1.25 Gbps and complies with the IEEE 802.3z standard for Gigabit Ethernet. It features a standard LC duplex connector and robust digital optical monitoring (DOM) capabilities, allowing real-time diagnostics such as temperature, voltage, and optical power levels. Designed to meet rigorous Cisco quality standards, this module delivers reliable performance in enterprise and service provider environments. When purchasing used, buyers should ensure the unit is tested and authenticated to maintain compatibility and performance in their existing Cisco infrastructure.