GLC-BX40-D-I

The Cisco GLC-BX40-D-I is a small form-factor pluggable transceiver designed to extend Gigabit Ethernet connections over longer distances. It is commonly used in enterprise and data center environments where fiber links need to reach up to 40 kilometers.

Built for networking professionals managing fiber optic infrastructures, this module fits into SFP slots on Cisco switches and routers, offering a simple way to upgrade or expand network reach without major changes.

Key Features

• Transfers data reliably up to 40 kilometers on single-mode fiber cables
• Operates at 1310nm, supporting Gigabit Ethernet speeds
• Fits standard SFP slots, ensuring broad device compatibility
• Enables hot-swapping for uninterrupted network operation
• Includes digital diagnostics for monitoring optical output and temperature

This transceiver is often found in network backbones or between buildings on a campus, where longer distance and stable throughput are essential. Its design helps maintain network performance without excessive complexity or cost.