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Arista QDD-400G-SRBD 400GBASE-SR4.2 (400G-BIDI) MPO-12 connector, up to 70m / 100m over parallel OM3 / OM4 MMF

Mfr. Part #: QDD-400G-SRBD
Brand: Arista
Condition: New
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QDD-400G-SRBD

Arista QDD-400G-SRBD 400GBASE-SR4.2 (400G-BIDI) MPO-12 connector, up to 70m / 100m over parallel OM3 / OM4 MMF

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QDD-400G-SRBD Overview

ARISTA QDD-400G-SRBD 400gbase-sr4.2 (400g-bidi) Mpo-12 Connector, Up To 70m / 100m Over Parallel Om3 / Om4 Mmf

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faqs

Frequently Asked Questions

What is the primary use case for the Arista QDD-400G-SRBD transceiver? +
The QDD-400G-SRBD is a high-density 400G transceiver designed for short-reach data center interconnects and high-speed spine-leaf fabric links. It utilizes bi-directional optical technology, making it ideal for enterprises looking to maximize bandwidth efficiency over multi-mode fiber infrastructure while maintaining the compact QSFP-DD form factor required for modern high-radix switching platforms.
Does the QDD-400G-SRBD support legacy fiber cabling? +
This module is specifically engineered to operate over multi-mode fiber, typically OM4 or OM5, which is common in high-performance data center environments. Users should verify that their existing patch panels and fiber runs meet the necessary modal bandwidth requirements to support the 400G data rate over the specified link distances provided by the bi-directional transmission technology.
How does the QSFP-DD form factor impact network switch density? +
The QSFP-DD (Quad Small Form-factor Pluggable Double Density) form factor is critical for achieving high port density. By doubling the number of electrical lanes compared to standard QSFP28 modules, this transceiver allows Arista switches to deliver 400G throughput per port, significantly increasing total switching capacity in a single rack unit without requiring additional physical chassis space.
What makes the SRBD technology unique compared to standard SR8 modules? +
SRBD, or short-reach bi-directional technology, optimizes fiber usage by sending and receiving data over the same fibers simultaneously. This approach simplifies cabling architecture in the data center compared to traditional multi-lane SR8 solutions, as it often allows for a more streamlined fiber plant while maintaining the robust performance metrics required for high-speed, low-latency enterprise networking environments.
Is the QDD-400G-SRBD hot-swappable during normal operation? +
Yes, this transceiver is designed for hot-swappability, meaning you can insert or remove the module from the switch port while the system is powered on. This capability is essential for minimizing network downtime during maintenance, upgrades, or hardware replacements, allowing your infrastructure to remain operational while you scale or adjust your high-speed connectivity.
Are there specific licensing requirements for using Arista transceivers? +
Arista hardware is generally designed for seamless interoperability with their native transceivers. Using original Arista modules like the QDD-400G-SRBD ensures that the optics are fully recognized by the EOS operating system, providing accurate digital diagnostics and management data without the need for additional third-party optical licensing or complex command-line workarounds to enable the port.
How do I monitor the performance of this 400G transceiver? +
You can monitor the transceiver's performance through the Arista EOS interface using standard DOM (Digital Optical Monitoring) commands. This feature provides real-time data on optical transmit and receive power, laser temperature, and voltage levels, enabling your network administrators to proactively identify potential signal degradation or physical layer issues before they impact overall throughput.
What is the maximum reach for the QDD-400G-SRBD? +
The QDD-400G-SRBD is optimized for short-reach applications, typically targeting distances consistent with standard data center row lengths. While performance can vary based on the quality of the multi-mode fiber plant and the number of patch points, it is engineered to provide reliable, low-error-rate connectivity within the specified distance limitations for high-performance enterprise backbone cabling.
Can I request a bulk quote for multiple QDD-400G-SRBD modules? +
Absolutely. If you are planning a large-scale data center deployment and require a high volume of QDD-400G-SRBD transceivers, our team is ready to assist. Please contact our sales department directly to discuss your project requirements, and we will provide a competitive bulk quote tailored to your specific networking needs and quantity requirements.
Why should I choose BuyRouterSwitch.com for my Arista hardware needs? +
BuyRouterSwitch.com is a trusted source for professional-grade networking equipment. We specialize in providing authentic hardware and a streamlined procurement process for IT teams. By sourcing from us, you gain access to an experienced sales team dedicated to helping you secure the exact components you need for your infrastructure, ensuring a smooth and reliable purchasing experience.
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