Cisco QSFP Module — 100GBase-SR4 MPO Multi-Mode Transceiver

Experience scalable, high-performance connectivity with the Cisco QSFP Module, a purpose-built 100GBASE-SR4 transceiver designed for optical networks and data-center deployments. This hot-swappable QSFP module uses an MPO/MTP connector to deliver four parallel 25 Gbps lanes over multi-mode fiber, enabling robust short-reach links and ultra-dense deployments in modern data centers. Engineered for reliability, interoperability, and ease of installation, it is the optimal choice for expanding 100 Gigabit Ethernet capabilities across campus backbones, leaf-spine fabrics, and blade-server architectures. With Cisco’s renowned compatibility with flagship switches and routers, you can deploy with confidence, knowing you’re investing in a transceiver that pairs seamlessly with existing Cisco infrastructure and fiber infrastructure standards.

• Unmatched 100GBASE-SR4 performance: Four parallel 25 Gbps lanes deliver up to 100 Gbps aggregate bandwidth over short-reach multimode fiber, making it ideal for high-density data centers and high-throughput rack-to-rabric interconnects. This transceiver is built to maximize link stability while minimizing latency, enabling quicker provisioning and smoother data flows across compute clusters, storage backends, and virtualization environments.
• Multi-mode fiber compatibility with MPO/MTP cabling: Optimized for OM3/OM4 multimode fiber, the module supports standard MPO/MTP cabling to simplify deployments in new or existing fiber plants. It enables scalable growth as data-center traffic increases, while maintaining compatibility with widely adopted fiber infrastructure and patch panels.
• Hot-swappable and field-proven reliability: The QSFP form factor is designed for live-network maintenance, allowing technicians to insert or replace modules without powering down critical equipment. Built to Cisco quality standards, it delivers dependable performance, stable thermal characteristics, and robust resistance to environmental factors inherent in data-center environments.
• High-density, energy-efficient design: The compact QSFP package enables dense port layouts in top-of-rack and spine-leaf architectures, reducing rack footprint and cooling requirements. This module balances performance with power efficiency, helping data centers scale throughput while managing operational costs.
• Seamless integration with Cisco ecosystems: Optimized for Cisco switches, routers, and fabric interconnects, the module supports straightforward configuration and monitoring through standard Cisco management interfaces. It’s the reliable choice for enterprises and service providers seeking plug-and-play interoperability with existing Cisco gear and fiber networks.

Technical Details of Cisco QSFP Module

• Form Factor: QSFP+ (Quad Small Form-factor Pluggable)
• Data Rate: 100 Gbps (100GBASE-SR4)
• Interface/Connector: MPO/MTP multi-fiber connector for parallel optics
• Fiber Type: Multi-mode fiber (OM3/OM4 recommended for SR4)
• Key Features: Hot-swappable design; Cisco-compatible; RoHS-compliant; optimized for short-reach, high-density deployments

how to install Cisco QSFP Module

To install the Cisco QSFP Module, begin with proper safety and a clean workspace. Power down the device if required by your maintenance policy, but remember that many Cisco platforms support hot-swapping, allowing you to replace or upgrade transceivers with minimal downtime. Remove the existing QSFP module, taking care to handle with clean hands or anti-static precautions. Align the new QSFP module with the appropriate slot in the switch, router, or fabric interconnect, ensuring the connector orientation matches the slot’s guidance. Gently but firmly insert the module until it seats with a decisive click of the latching mechanism, confirming a secure connection. Before connecting fiber, inspect and clean the MPO/MTP trunk and patch leads; ensure you use OM3/OM4 multimode fiber cables that match your link distance and optical budget. Connect the MPO/MTP fiber harness to the transceiver, then route cables without sharp bends or tension that could impact signal integrity. Re-seat any panels or covers, restore power, and verify link status via the device’s management interface or CLI. Use the appropriate command set to bring the 100G interface online, validate the optical parameters (link uptime, error-free counts, and BER), and run a basic throughput test to confirm end-to-end performance. If you are replacing an existing transceiver, confirm that the new module is recognized by the device and that the system’s line cards or fabric modules are compatible with 100GBASE-SR4 operation. Regularly inspect connectors and maintain clean fiber to prevent degradation of signal integrity over time. With proper installation and routine maintenance, the Cisco QSFP Module delivers stable, high-speed performance across your data-center fabric.

Frequently asked questions

• Q: What is the Cisco QSFP Module used for?
  A: It is a 100GBASE-SR4 transceiver designed for short-reach optical networks using multi-mode fiber. It enables high-density, high-bandwidth 100 Gbps links in data centers, campus networks, and enterprise backbones, with an MPO/MTP interface for parallel optics and four 25 Gbps lanes.
• Q: Which fiber and cabling are required?
  A: The module uses multi-mode fiber, typically OM3 or OM4, with MPO/MTP connectors. For best performance, ensure fiber is clean and terminated correctly with compatible MPO trunk cables and appropriate patching to LC connectors on transceiver-side terminations.
• Q: Is the module hot-swappable?
  A: Yes. The module is designed for hot-swapping, allowing maintenance without powering down the entire device in many Cisco platforms. Always follow proper ESD precautions and platform-specific guidelines when replacing transceivers.
• Q: What platforms support this 100GBASE-SR4 module?
  A: The module is designed to be compatible with Cisco switches and routers that accept QSFP modules and support 100GBASE-SR4 operation. Verify model and hardware compatibility on Cisco's product support lists for your specific device.
• Q: How do I verify the installation and performance?
  A: After installation, use the device management interface or CLI to confirm module recognition, link status, and negotiated speed. Run diagnostic commands or loopback tests, monitor for any error counters (CRC, BER, latency), and check for stable throughput across your 100 Gbps link. Regularly review optic health and perform periodic cleaning and inspections of fiber connectors to sustain optimal performance.