Cisco QDD-4X100G-LR-S 400G QSFP-DD, 4x 100GBASE-LR1, MPO-12 Transceiver Module

Name: Cisco QDD-4X100G-LR-S 400G QSFP-DD, 4x 100GBASE-LR1, MPO-12 Transceiver Module
Brand: Cisco
SKU: QDD-4X100G-LR-S
Price: 1719.25 USD
Availability: InStock
Rating: 5 (10 reviews)

Mfr. Part #: QDD-4X100G-LR-S

Brand: Cisco

Condition: New

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overview

specifications

faqs

reviews

overview

QDD-4X100G-LR-S Overview

CISCO QDD-4X100G-LR-S Qsfp-dd Transceiver Module - 400 Gigabit Lan - 4x Ethernet 100gbase-lr - Mpo-12 Single-mode - Up To 6.2 Miles - 1310 Nm.

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specifications

Specifications

Overview

Condition	New
Brand	Cisco
Stock	In Stock

Key Features

Device Type	Qsfp-dd Transceiver Module
Form Factor	Plug-in Module
Color	Blue

Networking

Connectivity Technology	Wired
Cabling Type	4x Ethernet 100gbase-lr
Data Link Protocol	400gbe
Data Transfer Rate	400 Gbps
Optical Wave Length	1310 Nm
Max Transfer Distance	6.2 Miles
Compliant Standards	Ieee 802.3cu

Expansion / Connectivity

Interfaces	1 X 4x Ethernet 100gbase-lr - Mpo-12 Single-mode

Miscellaneous

Compliant Standards	Itu-t G.652

Power

Power Consumption Operational	12 Watt

faqs

Frequently Asked Questions

What is the primary function of the Cisco QDD-4X100G-LR-S transceiver? +

The Cisco QDD-4X100G-LR-S is a high-performance QSFP-DD transceiver designed to break out a single 400G port into four independent 100G Ethernet links. It utilizes long-reach (LR) optics, making it ideal for connecting data center leaf-spine architectures or aggregation switches over single-mode fiber infrastructure.

What cabling infrastructure is required for the QDD-4X100G-LR-S? +

This transceiver operates over single-mode fiber (SMF) using LC connectors. Because it is an LR-rated module, it is optimized for high-speed connectivity across extended distances within a campus or between colocation facilities, ensuring minimal signal attenuation compared to multi-mode alternatives.

Is the QDD-4X100G-LR-S compatible with standard QSFP-DD switch ports? +

Yes, this module is specifically engineered for compliance with the QSFP-DD (Quad Small Form-factor Pluggable Double Density) standard. It is fully compatible with Cisco platforms that support the QSFP-DD form factor, allowing for seamless integration into existing high-density 400G port configurations.

What is the maximum reach for the Cisco QDD-4X100G-LR-S? +

The QDD-4X100G-LR-S is designed to support link lengths typically associated with LR specifications, usually reaching up to 10 kilometers over single-mode fiber. This makes it a robust choice for network engineers who need to bridge connectivity between distant rows or buildings in a data center environment.

How does the breakout capability of this module benefit network density? +

By enabling 4x100G breakout from a single 400G port, this module drastically increases port density and reduces the footprint of cabling racks. This configuration is highly efficient for connecting high-bandwidth 400G core switches to multiple 100G-enabled leaf switches, optimizing both power consumption and switch chassis real estate.

Does the QDD-4X100G-LR-S support digital optical monitoring (DOM)? +

Cisco optical modules, including this model, incorporate digital optical monitoring. This feature provides real-time access to operational parameters such as optical output power, input power, temperature, and transceiver supply voltage, enabling proactive troubleshooting and monitoring of link health through your switch's command-line interface.

What are the power consumption considerations for this transceiver? +

The QDD-4X100G-LR-S is engineered to operate within the defined power envelope for QSFP-DD modules. When deploying high-density configurations, ensure your switch or router chassis supports the required power-per-port allocation for optical modules of this class to maintain stable performance across all active links.

Can the QDD-4X100G-LR-S be used for 400G-to-400G applications? +

No, the QDD-4X100G-LR-S is specifically optimized for 4x100G breakout operations. If your network design requires a direct 400G-to-400G connection, you should utilize a standard 400G-LR8 or equivalent 400G-specific transceiver to ensure proper signal synchronization and link stability for high-bandwidth uplinks.

How can I obtain a bulk quote for multiple Cisco QDD-4X100G-LR-S units? +

For large-scale infrastructure projects requiring multiple QDD-4X100G-LR-S modules, please contact our sales team directly through BuyRouterSwitch.com. We specialize in supporting enterprise-level procurement and can provide competitive pricing structures for high-volume orders to help you meet your budgetary requirements while maintaining high-quality hardware standards.

Why should I choose BuyRouterSwitch.com for my Cisco optics procurement? +

BuyRouterSwitch.com is a trusted provider of authentic enterprise-grade networking equipment. By sourcing through us, you gain access to a reliable supply chain and dedicated account management, ensuring that your critical network components are genuine and delivered efficiently to keep your data center operations running smoothly.

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