Cisco 1000BASE-LX/LH SFP Transceiver Module — MMF/SMF, 1310nm, DOM

Enhance your enterprise and data-center fiber networks with the Cisco 1000BASE-LX/LH SFP transceiver module. This versatile SFP (small form-factor pluggable) supports both multimode and single-mode fiber, enabling flexible, long-haul Gigabit Ethernet connectivity with plug‑and‑play ease. Built to Cisco’s exacting standards, the module delivers reliable, stable performance in campus and data-center deployments, whether you are upgrading existing infrastructure or designing a new, scalable network. With 1310 nm optics and Digital Optical Monitoring (DOM), you gain real-time visibility into link health, optical power, and module status—helping prevent downtime and optimize maintenance windows. The compact 1 x LC/PC duplex interface enables straightforward integration into compatible Cisco switches, routers, and optical transport devices, and its hot-swappable nature means you can upgrade without powering down critical systems. This transceiver is the ideal choice for long-range connections, campus backbone links, and edge deployments where flexibility and reliability are paramount.

• Flexible MMF/SMF compatibility with 1310 nm wavelength for long‑haul Gigabit Ethernet connectivity, enabling versatile deployments across campuses and data centers.
• 1 Gbps Data Rate (1000Base-LX/LH) delivering reliable, high‑speed fiber performance that supports robust network throughput and scalable growth.
• Digital Optical Monitoring (DOM) provides real‑time, granular visibility into optical power, temperature, laser status, and overall link health for proactive maintenance and faster fault isolation.
• 1 x LC duplex optical interface for easy integration into a wide range of Cisco devices; hot‑swappable design minimizes downtime and preserves existing infrastructure investments.
• Durable Cisco‑grade build with industry‑standard compliance, designed for dependable operation in enterprise, campus, and data‑center environments, and compatible with Cisco switches and routers that support SFP modules.

Technical Details of Cisco 1000BASE-LX/LH SFP Transceiver Module

• Type: SFP transceiver module (mini‑GBIC)
• Optical Interface: 1000Base-LX/LH over MMF/SMF
• Wavelength: 1310 nm
• Fiber Type: MMF and SMF
• Connector: LC duplex
• Data Rate: 1 Gbps (1000Base‑LX/LH)
• Digital Optical Monitoring (DOM): Yes
• Form Factor: SFP (1 x LC/PC duplex)
• Full‑Duplex Operation
• Compatibility: Cisco devices that support SFP transceivers
• Typical Transmission Distance: Distance varies by fiber type and quality (SMF supports longer reach; MMF reach is shorter)

How to install Cisco 1000BASE-LX/LH SFP Transceiver Module

Installing the Cisco 1000BASE-LX/LH SFP transceiver is quick and straightforward, designed for minimal downtime and seamless integration into existing networks. Follow these steps to install and verify proper operation:

• Power down optional: If your equipment supports hot‑swapping, you can insert the module with the device powered on. If unsure, you may power down the specific port or device according to your network policy.
• Identify the SFP slot: Locate an empty SFP slot on a Cisco switch, router, or optical transport device that supports 1000Base‑LX/LH transceivers.
• Insert the transceiver: Align the module with the slot and firmly insert it until the module clicks into place and the retention latch engages.
• Connect fiber: Attach a fiber optic cable with LC duplex connectors to the transceiver. Ensure the connectors are clean and fully seated; secure the cable to avoid mechanical strain.
• Verify link status: Check the device’s port LED indicators and use the management CLI or GUI to confirm link establishment and 1 Gbps negotiation. If available, monitor DOM data to confirm optical parameters are within expected ranges.
• Test communication: Run basic network tests (ping, traceroute, or throughput tests) to confirm end‑to‑end connectivity. If issues arise, verify fiber type, distance, and any intermediate media converters or network devices.
• Documentation and monitoring: Record the installation, label the fiber pair, and configure any monitoring or alerting for DOM metrics to maintain long‑term visibility into the link health.

Frequently asked questions

• What is 1000BASE-LX/LH? 1000BASE-LX/LH is a Gigabit Ethernet physical layer specification for long‑reach fiber networks using 1310 nm optics. LX is designed for longer single‑mode fiber runs, while LH (long haul) variants support extended distances depending on fiber quality and connectors.
• Is this SFP compatible with MMF and SMF? Yes. The Cisco 1000BASE-LX/LH SFP is designed to operate over both multimode (MMF) and single‑mode (SMF) fiber, offering flexible deployment options.
• What does DOM mean for this transceiver? DOM stands for Digital Optical Monitoring. It provides real‑time data on optical power, temperature, laser status, and other parameters, enabling proactive monitoring and faster fault isolation.
• How do I install or replace this SFP module? The module is hot‑swappable on most Cisco devices. Remove the old module if present, insert the new SFP until it latches, connect the LC fiber, and verify link status via device management tools.
• What performance can I expect? This module delivers 1 Gbps of data throughput under 1000Base‑LX/LH specifications, with performance dependent on fiber type, distance, and network configuration. Distances are longer on SMF and shorter on MMF, following standard fiber transmission limits.