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Cisco QDD-400G-SR4.2-BD 400G QSFP-DD Transceiver, MPO-12, 100m OM4 MMF 400GBASE-SR4

Mfr. Part #: QDD-400G-SR4.2-BD
Brand: Cisco
Condition: New
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QDD-400G-SR4.2-BD

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QDD-400G-SR4.2-BD Overview

CISCO QDD-400G-SR4.2-BD 400g Qsfp-dd Transceiver, Mpo-12, 100m Om4 Mmf 400gbase-sr4.

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Frequently Asked Questions

What is the primary function of the Cisco QDD-400G-SR4.2-BD transceiver module? +
The QDD-400G-SR4.2-BD is a high-density 400G QSFP-DD transceiver designed for short-reach data center applications. It utilizes bidirectional (BiDi) technology to provide 400G throughput over multimode fiber, making it an efficient solution for upgrading core switching architectures while maintaining compatibility with existing cabling infrastructures where applicable.
Can the QDD-400G-SR4.2-BD operate in 4x100G breakout configurations? +
This module is specifically engineered to support high-bandwidth 400G connectivity. While it utilizes an SR4.2 interface, the primary deployment scenario is for 400G-to-400G links. When planning your network topology, ensure that your switch ports are configured for the correct speed and reach specifications to maintain signal integrity across the fiber link.
What type of optical fiber cabling is required for this 400G transceiver? +
The QDD-400G-SR4.2-BD is designed for use with MPO-12 connectors over OM4 or OM5 multimode fiber. By leveraging BiDi technology, it optimizes the fiber usage for short-reach distances, providing a robust solution for high-speed interconnects within enterprise or service provider data center environments.
How does the power consumption of this QSFP-DD module compare to standard transceivers? +
Power efficiency is a critical design feature for the QDD-400G-SR4.2-BD. As a QSFP-DD form factor device, it is optimized to balance thermal performance with high-speed data transmission. We recommend verifying that your switch chassis has adequate cooling airflow and power budget headroom to support the deployment of high-density 400G optics across all ports.
Is the QDD-400G-SR4.2-BD compatible with all Cisco 400G switches? +
This module is compatible with Cisco platforms that support the QSFP-DD form factor and the 400G-SR4.2 standard. To ensure seamless integration, always check the Cisco Optics-to-Device Compatibility Matrix to confirm that your specific switch model and software version support this hardware, ensuring peak performance and reliable network operations.
What are the common deployment environments for the QDD-400G-SR4.2-BD? +
This transceiver is ideally suited for top-of-rack, middle-of-row, or end-of-row interconnects within high-performance computing and cloud data centers. Its short-reach reach makes it perfect for linking high-density switches and routers within the same facility, providing the low-latency throughput required for modern data-intensive applications and high-bandwidth storage networks.
Does this transceiver require specific software versions on Cisco switches? +
Yes, optimal operation of the QDD-400G-SR4.2-BD requires running a supported Cisco IOS-XE or NX-OS software version. Deploying the latest recommended firmware ensures that the switch correctly recognizes the module's diagnostic information, laser controls, and link monitoring capabilities, which are essential for maintaining stable, high-speed 400G data transmission throughout your network.
How does the QDD-400G-SR4.2-BD handle diagnostic monitoring? +
Like most modern Cisco transceivers, this module supports Digital Optical Monitoring (DOM). This feature allows network administrators to monitor real-time parameters such as optical output power, input power, temperature, and transceiver supply voltage. These metrics are accessible via the switch CLI, providing critical visibility into the health of your physical layer links.
How can I obtain a bulk quote for Cisco QDD-400G-SR4.2-BD modules? +
For large volume orders of Cisco transceivers, BuyRouterSwitch.com offers specialized pricing through our dedicated sales team. Simply add the items to your quote request list on our website or contact us directly. We streamline the procurement process for enterprise-level deployments, ensuring you receive competitive rates for your specific project scale and quantity requirements.
Why should I choose BuyRouterSwitch.com for my networking hardware needs? +
BuyRouterSwitch.com is a trusted provider of networking hardware, focusing on delivering authentic equipment to meet rigorous enterprise standards. We prioritize secure ordering processes and maintain a deep inventory of Cisco components to support your infrastructure needs. Our team is committed to facilitating smooth procurement cycles for organizations that require reliable, high-performance networking solutions delivered with professional efficiency.
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