Cisco 1000BASE-BX80-U for 80km Single-Fiber Bidirectional Applications; with DOM

Engineered for high-performance data networking, the Cisco 1000BASE-BX80-U is a single-fiber, BiDi (Bidirectional) SFP transceiver designed to extend Gigabit Ethernet reach over long distances. With a maximum distance of 80 kilometers and built-in Digital Optical Monitoring (DOM), this hot-swappable, LC/PC-connected module integrates seamlessly into Cisco and compatible network gear. Ideal for carrier-grade links, data centers, and metro networks, the BX80-U combines efficient long-haul operation with the reliability Cisco users expect, enabling scalable, cost-effective deployments while preserving fiber infrastructure.

• Unmatched reach and reliable long-haul performance: The 1000BASE-BX80-U BiDi SFP delivers 1 Gbps Ethernet over a single optical fiber for up to 80 kilometers (approximately 262,467 feet). This extended reach makes it an excellent choice for backhaul connections, metro links, and campus-to-data-center networks where fiber runs are extensive. The BiDi design uses two wavelengths on a single fiber, allowing simultaneous bidirectional data transmission without the need for a separate fiber pair, which can dramatically reduce fiber plant costs and simplify network topology.
• Smart monitoring with DOM (Digital Optical Monitoring): DOM provides real-time health and performance data directly from the transceiver. Network administrators can monitor optical power, transceiver temperature, supply voltages, and module status. This visibility facilitates proactive maintenance, quick fault isolation, and improved uptime for critical links. DOM-enabled SFPs are particularly valuable in distributed environments where remote monitoring and rapid troubleshooting are essential.
• Seamless Cisco compatibility and broad interoperability: The BX80-U is a Cisco 1000BASE-BX80-U BiDi SFP that aligns with SFP MSA standards, ensuring compatibility with Cisco switches, routers, and a wide range of third-party devices that support SFP modules. Its hot-swappable design minimizes downtime during upgrades or maintenance, and the LC/PC connector provides a compact, reliable fiber interface suitable for high-density deployments. When deployed in Cisco ecosystems, this transceiver helps maintain consistent performance, simplified management, and streamlined provisioning through familiar Cisco tools.
• Optimized for efficiency and rugged deployment: Built for robust performance in enterprise and service-provider environments, the BX80-U emphasizes reliability over long-haul links while maintaining energy-conscious operation. The module is engineered for compatibility with single-mode fiber and standard network power and cooling provisions, helping to reduce operational complexity. Its design supports demanding operational contexts, including backhaul, access networks, and data-center interconnections, with a focus on stable performance over extended distances.
• Future-ready connectivity with flexible installation: The 1000BASE-BX80-U supports 1 Gbps Ethernet over a single fiber using a BiDi configuration, enabling scalable upgrades without rewiring or laying additional fiber. The single LC connector simplifies patching and reduces footprint in high-density racks. This transceiver is well-suited for organizations looking to maximize fiber utilization, minimize capital expenditure, and preserve current network investments while enabling long-haul growth as traffic demands increase.

Technical Details of Cisco 1000BASE-BX80-U

• Form Factor: SFP (Small Form-factor Pluggable), hot-swappable
• Model: Cisco 1000BASE-BX80-U
• Transceiver Type: BiDi SFP, 1310 nm Tx / 1550 nm Rx (bidirectional on a single fiber)
• Standard / Data Rate: 1000BASE-Gigabit Ethernet, 1 Gbps
• Wavelength (Tx/Rx): Transmit at 1310 nm; Receive at 1550 nm (BiDi pair on a single fiber)
• Fiber Type: Single-Mode Optical Fiber
• Distance: Up to 80 km (262,467 ft)
• Connector: LC/PC (duplex LC fiber interface used for BiDi on a single fiber)
• DOM: Yes — Digital Optical Monitoring for real-time diagnostics
• Hot-swappable: Yes — plug-and-play with compatible equipment
• Applications: Data Networking, Optical Networking, Gigabit Ethernet backhaul and interconnects
• MSA Compliance: SFP MSA compliant and Cisco-specific compatibility for broad interoperability
• Operating Temperature: Standard commercial range (0°C to 70°C typical, depending on platform)
• RoHS / Environmental: RoHS compliant; designed for reliable operation in enterprise deployments

How to install Cisco 1000BASE-BX80-U

• Power down the network device (switch or router) or place it in a protected maintenance window if required by policy.
• Verify that the device supports SFP+ or SFP transceivers and that a 1000BASE-BX80-U BiDi module is the correct choice for your link budget and fiber plant.
• Insert the BX80-U carefully into the appropriate SFP slot. Ensure the module is fully seated and the locking mechanism is engaged.
• Connect the network fiber using a single-mode LC fiber optic patch cord with compatible LC/PC connectors on both ends. Align the fiber to the correct transmit/receive directions according to your network design and device labels.
• Power on the device and boot to the operating system or firmware environment. The port should come up with a link indication if the other end of the link is configured correctly and the fiber path is clear.
• Verify link status and performance using your device’s management interface (CLI or GUI). Use DOM data to confirm transmitter health, optical power levels, and temperature. If available, run a basic link test or loopback to validate end-to-end connectivity.
• Configure any required interface settings, such as speed, duplex, VLANs, or routing policies, to ensure the BiDi link integrates with the network as intended. Save configurations and monitor the link over the next business cycle.
• Document your installation details, including the module’s serial number, firmware compatibility, and link budget considerations for future maintenance.

Frequently asked questions

• What is the Cisco 1000BASE-BX80-U? It is a BiDi SFP transceiver designed for Gigabit Ethernet over a single optical fiber, enabling long-haul links up to 80 kilometers with a single LC connector and DOM for monitoring.
• What does BiDi mean for this transceiver? BiDi stands for Bidirectional; in this context, the transceiver uses two wavelengths (1310 nm and 1550 nm) on a single fiber to transmit and receive data in opposite directions, reducing fiber count and simplifying deployment.
• What is Digital Optical Monitoring (DOM)? DOM provides real-time telemetry from the transceiver, including optical power levels, temperature, voltages, and status. This helps with proactive maintenance and quick troubleshooting.
• What kind of fiber and connector does it require? It uses single-mode fiber and a single LC/PC connector for the BiDi link, enabling compact and flexible installations in tight spaces.
• Is the BX80-U compatible with Cisco equipment? Yes. It is designed to work with Cisco network devices and is generally compatible with other SFP-capable equipment that adheres to SFP MSA standards, subject to device-specific compatibility matrices.
• What is the maximum distance for this transceiver? The BX80-U supports up to 80 kilometers (approximately 262,467 feet) on suitable single-mode fiber and proper link budget.