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1000BASE-BX SFP ensures reliable upstream connectivity. Stable and professional-grade.
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1000BASE-BX SFP 1490NM
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GLC-BX-U=
- Description:
- 1000BASE-BX SFP 1490NM
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- Brand:
- Cisco
- GTIN:
- 662752054610
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- Warranty:
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- List Price:
$1,614.00
- Price:
$758.5853% off
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GLC-BX-U= Overview
GLC-BX-U= is a 1G SFP transceiver designed for bidirectional single-mode fiber transmission. It supports Gigabit Ethernet with LC connector interfaces and leverages a dual-wavelength architecture—transmitting at 1490nm and receiving at 1310nm—to enable long-range connectivity over distances up to 10 km, making it ideal for applications in data centers, enterprise networks, and telecom environments.
GLC-BX-U= comes in the standard SFP form factor with compact physical dimensions suited for high-density deployments. Official documentation specifies its operation within typical industrial temperature ranges and low power consumption, ensuring reliable performance in challenging network infrastructures. Its compliance with Ethernet standards further reinforces its utility in mission-critical networking applications.
GLC-BX-U= price is $758.58, a 53% saving from the Cisco list price of $1,614.00. GLC-BX-U= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for GLC-BX-U= for additional pricing. Browse the full Sfp+ For 3000 Series series or explore all Cisco products.
GLC-BX-U= Specifications
- Product Type
- Transceiver
- Form Factor
- SFP
- Data Rate
- 1G
- Connector Type
- LC
- Wavelength
- 1490nm (Tx) / 1310nm (Rx)
- Transmission Distance
- Long-Range
- Fiber Type
- Single-mode
- Max Distance
- 10 km
- Supported Protocols
- Ethernet
- Network Interface
- Ethernet
- Power Consumption
- 1.3W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco
- Product Name
- GLC-BX-U=
- Height
- 0.53 in
- Width
- 2.84 in
- Depth
- 0.33 in
- Weight
- 0.03 lbs
GLC-BX-U= Use Case
Metro Ethernet Link for Multi-Site Enterprises
A nationwide retail chain leverages the Cisco GLC-BX-U=1000BASE-BX SFP 1490NM in its core switches to connect 20+ branch offices over carrier-provided single-mode fiber. This 1Gbps, 10 km link delivers carrier-grade bandwidth and low latency, reducing WAN costs by 30% and ensuring uniform network performance across all locations.
Data Center Interconnect & Disaster Recovery Replication
A financial services firm deploys GLC-BX-U=1000BASE-BX SFP 1490NM modules to establish a 10 km single-mode fiber DCI between its primary and secondary data centers. The solution supports synchronous database replication at 1Gbps, achieving sub-millisecond latency, meeting stringent RPO/RTO SLAs and guaranteeing uninterrupted business continuity.
Campus Backbone Extension for Education & Research
A large university uses the Cisco GLC-BX-U=1000BASE-BX SFP 1490NM to extend its backbone across dispersed academic buildings via existing single-mode fiber. This 1Gbps, 10 km link supports high-definition lecture streaming, VoIP, and research data transfers, improving collaboration, reducing network bottlenecks, and enhancing the digital learning experience.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| GLC-BX-U= |  GLC-BX-D= |  DWDM-SFP-4294= |  GLC-GE-100FX= |  CWDM-SFP-1590= | |
|---|---|---|---|---|---|
| Compatibility | Cisco | Cisco | Cisco / Juniper / Huawei / Arista | Cisco | Cisco, Juniper, Huawei, Arista |
| Connector Type | LC | LC | LC | LC | LC |
| Data Rate | 1G | 1G | 1G | 100 Mbps | 1G |
| Depth | 0.33 in | N/A | 2.2 inches | 1.25 inches | 0.74 inches |
| Fiber Type | Single-mode | Single-mode | Single-mode | Multi-mode | Single-mode |
| Form Factor | SFP | SFP | SFP | SFP | SFP |
| Height | 0.53 in | N/A | 0.5 inches | 0.66 inches | 0.26 inches |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 10 km | 10 km | 80 km | 2000 meters | 80 km |
| Network Interface | Ethernet | Fiber | Fiber | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 1.3W | N/A | 3.5W | ≤1.5W | 1.0W |
| Product Name | GLC-BX-U= | Cisco GLC-BX-D= | DWDM-SFP-4294= | GLC-GE-100FX SFP Transceiver | CWDM SFP-1590 Transceiver Module |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Transmission Distance | Long-Range | Long-Range | Long-Range | Short-Range | Long-Range |
| Wavelength | 1490nm (Tx) / 1310nm (Rx) | 1490nm (Tx) / 1310nm (Rx) | 1550 nm | 1300 nm | 1590 nm |
| Weight | 0.03 lbs | N/A | 0.06 lbs | 0.10 lbs | 0.22 lbs |
| Width | 2.84 in | N/A | 0.5 inches | 1.10 inches | 0.87 inches |
Reviews & Ratings
I
Isla Bennett
4
Durable single-fiber module for enterprise fiber links.
T
Talia Rhodes
5
Consistent performance and low error rates.
E
Elias Pierce
4
Easy to deploy with minimal latency.
C
Clara Frost
5
Perfect for metro and campus fiber connections.
Questions & Answers
What is the GLC-BX-U= 1000BASE-BX SFP 1490 nm module?
The GLC-BX-U= is a Cisco-compatible 1000BASE-BX single-fiber SFP transceiver operating at 1490 nm for up to 10 km links over single-mode fiber.
What is the maximum link distance of the GLC-BX-U= 1000BASE-BX 1490 nm?
This SFP supports up to 10 km (6.2 mi) transmission over standard ITU-G.652 single-mode fiber at 1490 nm wavelength.
Which fiber type does the 1000BASE-BX SFP 1490 nm support?
The module is designed for single-mode fiber (SMF, ITU-G.652) and uses a bidirectional single-fiber connection with separate transmit and receive wavelengths.
What is the transmit and receive wavelength for GLC-BX-U=?
The GLC-BX-U= transmits at 1490 nm and receives at 1310 nm, enabling bidirectional communication on a single fiber strand.
What data rate does the 1000BASE-BX SFP 1490 nm support?
It supports Gigabit Ethernet at 1.25 Gbps line rate, fully compliant with IEEE 802.3ah 1000BASE-BX10 standards.
Does the GLC-BX-U= SFP include digital diagnostics monitoring?
Yes, it features Digital Diagnostics Monitoring (DDM/DOM) for real-time monitoring of optical power, temperature, voltage and bias current.
Is the GLC-BX-U= module hot-swappable?
Yes, the SFP form factor allows hot-pluggable installation or removal without powering down the host device.
Which network devices are compatible with the GLC-BX-U= 1000BASE-BX?
It is compatible with Cisco switches and routers as well as other MSA-compliant 1 Gbps SFP ports on Juniper, HP, Arista and Dell equipment.
What is the optical power budget of the 1490 nm SFP transceiver?
Typical transmit power is –5 to 0 dBm, with receive sensitivity of –23 dBm, yielding an optical budget of up to 18 dB.
Is the GLC-BX-U= module MSA-compliant?
Yes, it conforms to the Multi-Source Agreement (MSA) for SFP transceivers, ensuring interoperability across vendors.
What are the typical operating temperature ranges for the 1000BASE-BX 1490 nm?
Standard commercial SFP operates from 0 °C to 70 °C; extended-temperature versions are available for –40 °C to 85 °C environments.
What is the return loss specification for the GLC-BX-U=?
The module meets IEEE requirements with a minimum return loss of 30 dB for both transmit and receive channels.
What warranty covers the GLC-BX-U= 1490 nm SFP?
It typically includes a one-year warranty against manufacturing defects, with extended coverage options from select vendors.
How do I install the 1000BASE-BX SFP 1490 nm?
Align the SFP in the port, slide it in until it clicks, and confirm link status via the host device’s LED indicator or management interface.
What applications suit the GLC-BX-U= 1000BASE-BX transceiver?
Ideal for access networks, metro Ethernet, FTTH, and P2P links requiring cost-effective Gigabit Ethernet over single fiber.
How do I verify proper operation of the 1490 nm SFP module?
Use the host’s CLI or management GUI to check DDM values, link status and port diagnostics for transmit/receive optical power readings.