Cisco Fiber Optic Module GLC-BX-U

Cisco Fiber Optic Module GLC-BX-U:

The Cisco Fiber Optic Module GLC-BX-U is a 1 Gigabit Bi‑Directional (BiDi) SFP transceiver that enables duplex signaling over a single strand of single‑mode fiber (SMF). It operates as the “U” (upstream) side of a paired link transmitting at 1310 nm and receiving at 1490 nm and must be paired with a GLC-BX-D (downstream) module to complete the connection.

Designed for 1000BASE‑BX10 applications, this compact, hot-pluggable SFP supports up to 1.25 Gbps data rates and provides reliable network performance across distances of up to 10 km over SMF.

The GLC-BX-U module uses the 1000BASE-BX10 standard, which provides an effective data transfer rate of 1.0 Gbpsfor actual payload. However, due to encoding and signaling overhead, the total physical line rate reaches 1.25 Gbps.

• Line Rate (Physical Transmission Rate): 1.25 Gbps

• Payload Data Rate (Effective Data Throughput): Approximately 1.0 Gbps

It features the industry-standard SFP MSA SFF‑8472, including Digital Optical Monitoring (DOM) capabilities to monitor optical power, temperature, and module health.

Operating in standard commercial environments (0 °C to 70 °C) and fitted with an LC simplex connector, the GLC‑BX‑U is a direct OEM Cisco product, fully compatible with cisco switches, routers, and other networking hardware.

This module designed by Cisco company and you can buy it in network equipment market with 1-year Atech warranty. If you want to know more about network module specially cisco fiber optical module, you can contact us.

Features of Cisco Fiber Optic Module GLC-BX-U:

• Form Factor: SFP (Small Form-factor Pluggable), hot-swappable
• Function: Bi‑Directional (Tx 1310 nm / Rx 1490 nm)
• Standard: 1000BASE-BX10-U
• Data Rate: Up to 1.0 Gbps
• Reach: Up to 10 km over single-mode fiber (SMF)
• Connector: LC simplex
• Monitoring: DOM (Digital Optical Monitoring) per SFF‑8472
• Temperature Range: 0 °C to 70 °C (commercial-grade)
• Compatibility: Cisco OEM; works on Cisco network equipment

Uses of Cisco Fiber Optic Module GLC-BX-U:

• Deploying long-distance uplinks between sites or buildings using a single fiber strand to reduce cabling costs.
• Ideal for enterprise, campus, or metro access networks requiring 1 Gbps bandwidth.
• Since it’s an OEM Cisco module, it integrates seamlessly into Cisco gear and retains Cisco Support/SmartNeteligibility.

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