Cisco QSFP+ Module — 100GBase-LR4 LC Duplex Transceiver

The Cisco QSFP+ Module is a high-performance, hot-swappable transceiver designed to elevate data-center connectivity with 100 Gigabit Ethernet capabilities. Built for optical networks and data networking, this QSFP+ plug-in module delivers reliable, scalable bandwidth over single-mode fiber using 100GBase-LR4 technology. Ideal for core, distribution, and interconnect applications, it provides long-reach links between switches, routers, and optical devices while preserving rack density and reducing cabling complexity. With an LC duplex interface, a compact form factor, and carrier-grade reliability, this transceiver is engineered to meet the demanding requirements of modern enterprise, hyperscale, and service-provider networks. Whether upgrading an existing deployment or expanding a new data center, the Cisco QSFP+ Module enables seamless 100G connectivity with minimal downtime and straightforward maintenance.

• 100GBase-LR4 technology supports high-capacity, long-reach links over single-mode fiber, typically enabling connections up to 10 kilometers. This makes it ideal for data-center interconnects, campus backbones, and metropolitan networks where distance and performance matter.
• Hot-swappable QSFP+ form factor lets you insert or replace the transceiver without powering down the host device in accordance with vendor guidelines, reducing maintenance windows and minimizing service disruption.
• Interface: 1 x LC duplex optical connector pairs with standard single-mode fiber patch cables, providing a robust, widely adopted connection interface for scalable deployments.
• Fiber type: Single-mode optical fiber is optimized for long-distance transmission with low attenuation, enabling reliable, high-quality links across campus, data-center corridors, and backbone networks.
• Designed for 100 Gigabit Ethernet, this module enables high-density, scalable networks with significant bandwidth per port, supporting modern workloads such as virtualization, cloud services, data analytics, and big data applications.

Technical Details of Cisco QSFP+ Module

• Form Factor: QSFP+
• Data Rate: 100GBase-LR4 (100 GbE)
• Interface: 1 x LC duplex
• Fiber Type: Single-mode
• Reach: Typically up to 10 km on SMF
• Wavelength/Channel: LR4 multi-channel design optimized for long-distance transmission over four wavelength channels
• Power Characteristics: Not specified in provided data; consult Cisco datasheet for exact power consumption
• Hot-Swappable: Yes
• Standards: Compatible with 100 Gigabit Ethernet networks and standard optical networking practices

How to Install Cisco QSFP+ Module

• Confirm compatibility: Verify that your switch or router supports QSFP+ modules at 100GBase-LR4 and that the device firmware is up to date with the vendor’s recommended version.
• Power considerations: If your equipment supports hot-swapping, you can install the module with power on; otherwise, follow your device’s official shutdown procedures to minimize risk.
• Prepare fiber: Use clean, properly terminated single-mode LC patch cables. Inspect connectors and end-faces for any dust or debris, cleaning with a fiber-cleaning method if necessary.
• Insert the module: Align the module with the QSFP+ slot and firmly seat it until the latches engage. Ensure the module is fully seated and secured before reconnecting any cables.
• Connect fiber and verify: Attach the LC duplex fiber patch cords to the module and the corresponding ports. Power on or resume operation and verify link status and nominal data rates through the device’s interface or management software. Run basic connectivity tests to ensure proper operation and alignment with the network plan.

Frequently Asked Questions

• Q: What is the Cisco QSFP+ Module used for?

  A: It is a high-speed transceiver designed to enable 100 Gigabit Ethernet connectivity over single-mode fiber with an LC duplex interface. It fits into QSFP+ ports on compatible networking equipment to provide long-reach, high-bandwidth links between data-center devices and network cores.

• Q: What is LR4 in 100GBase-LR4?

  A: LR4 refers to a multi-wavelength design that supports long-reach transmission over single-mode fiber, typically using four channels to deliver 100 GbE. It is optimized for long-distance links with high capacity while maintaining signal integrity.

• Q: Is this module hot-swappable?

  A: Yes. The QSFP+ module is designed for hot-swapping on compatible devices, allowing installation or replacement without powering down the entire system, subject to manufacturer guidelines and equipment policies.

• Q: What cable type should I use?

  A: Use standard single-mode LC duplex fiber patch cables designed for LR4 operation. Proper cleaning, handling, and connector care are essential to maintaining optimal performance and minimizing insertion loss.

• Q: Which devices support this module?

  A: The module is compatible with Cisco devices and other equipment that support QSFP+ 100GBase-LR4 transceivers. Always verify with your hardware vendor to ensure compatibility, firmware requirements, and supported features.