CISCO QDD-400G-LR8-S 400g Qsfp-DD Tranceiver

Name: CISCO QDD-400G-LR8-S 400g Qsfp-DD Tranceiver
Brand: Cisco
SKU: QDD-400G-LR8-S
Price: 6322.35 USD
Availability: InStock
Rating: 5 (11 reviews)

Mfr. Part #: QDD-400G-LR8-S

Brand: Cisco

Condition: New

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QDD-400G-LR8-S

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overview

specifications

faqs

reviews

overview

QDD-400G-LR8-S Overview

CISCO QDD-400G-LR8-S Qsfp-dd Transceiver Module - 400 Gigabit Lan :

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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

Networking

Connectivity Technology	Wired
Cabling Type	400gbase-lr8
Data Link Protocol	400 Gigabit Lan
Data Transfer Rate	400 Gbps
Max Transfer Distance	6.2 Miles
Features	Full Duplex Mode

Expansion / Connectivity

Interfaces	2 X Ethernet 400gbase-lr8 - Lc

Compatibility Information

Designed For	P/n: 8201-32fh, 8201-sys, 8202-sys, 8800-lc-36fh, 8800-lc-36fh=, A9903-20hg-pec, A9903-20hg-pec=, A99-10x400ge-x-tr=, A9k-20hg-flex-fc, A9k-20hg-flex-fc=, A9k-20hg-flex-se, A9k-20hg-flex-se=, A9k-20hg-flex-tr, A9k-20hg-flex-tr=, A9k-8hg-flex-fc, A9k-8hg-flex-fc=, A9k-8hg-flex-se, A9k-8hg-flex-se=, A9k-8hg-flex-tr, A9k-8hg-flex-tr=, Asr-9903, Asr-9903=, Asr-9903-4p-kit, Asr-9903-cab-mgmt, Asr-9903-fan, Asr-9903-filter, Asr-9903-pec-filr, Asr-9903-trk, N3k-c3408-s, N3k-c3408-s=, N3k-c3408-sz, N3k-c3432d-s, N3k-c3432d-s=, N9k-c9316d-gx, N9k-c9316d-gx=, N9k-c9348d-gx2a, N9k-c93600cd-gx, N9k-c93600cd-gx=, N9k-x9716d-gx=, Nc57-18d12th-sb=, Nc57-18dd-se, Nc57-18dd-se=, Nc57-24dd, Nc-57-24dd=, Nc57-24x400g-ba=

faqs

Frequently Asked Questions

What is the maximum reach of the Cisco QDD-400G-LR8-S transceiver? +

The Cisco QDD-400G-LR8-S is engineered for high-performance long-reach applications, supporting transmission distances of up to 10 kilometers over single-mode fiber (SMF). This makes it an ideal solution for interconnecting data centers, linking core campus switches, or extending enterprise network backbones where high-bandwidth, long-range connectivity is essential.

Which physical port interface does the QDD-400G-LR8-S module utilize? +

This module features a QSFP-DD (Quad Small Form-factor Pluggable Double Density) form factor, which is designed to support 400G speeds while maintaining backward compatibility with standard QSFP28 interfaces. It uses a duplex LC connector for the optical fiber interface, ensuring seamless integration into existing high-density fiber patch panels and optical networking infrastructure.

Does the QDD-400G-LR8-S support breakout configurations for lower speed connections? +

While the QDD-400G-LR8-S is primarily designed for high-capacity 400G Ethernet links, its deployment versatility depends on your specific host switch's port capabilities. You should consult your Cisco switch documentation to confirm if the hardware supports port bifurcation or breakout modes, which can allow a single 400G QSFP-DD port to be split into multiple lower-speed connections.

Is the QDD-400G-LR8-S compatible with both Cisco enterprise and data center switches? +

Yes, this transceiver is purpose-built to operate within the Cisco ecosystem. It is compatible with a wide range of Cisco Nexus and Catalyst platforms that support 400G QSFP-DD optics. To ensure complete network stability and performance, always verify your switch's compatibility matrix to confirm that the specific Cisco IOS-XE or NX-OS software version supports this module.

What is the primary optical standard used by the QDD-400G-LR8-S? +

This module adheres to the 400GBASE-LR8 IEEE standard, utilizing wavelength division multiplexing (WDM) technology across eight internal lanes. By multiplexing these signals, it achieves a total throughput of 400 Gigabits per second over a single pair of single-mode fibers, providing a reliable and efficient transport solution for modern hyperscale and enterprise network environments.

How does the power consumption profile affect deployment in high-density chassis? +

The QDD-400G-LR8-S is optimized for thermal efficiency within high-density environments. Because 400G optics naturally generate more heat than lower-speed counterparts, it is important to ensure your switch or router chassis has adequate cooling airflow. Adhering to the manufacturer's thermal specifications helps maintain the longevity of the module and prevents potential link degradation in tightly packed switch racks.

Does the QDD-400G-LR8-S require specific software licensing on Cisco hardware? +

Generally, Cisco network transceivers are recognized by the switch hardware upon insertion without requiring a distinct feature license. However, your device must be running a firmware version that recognizes the specific QSFP-DD transceiver type. We recommend keeping your switch software updated to the latest stable release to ensure optimal recognition, monitoring, and diagnostic reporting for the transceiver.

How can I monitor the performance and diagnostic status of the transceiver? +

This module supports Digital Optical Monitoring (DOM), which allows network administrators to monitor real-time parameters such as optical output power, input power, temperature, laser bias current, and transceiver supply voltage. These metrics are accessible directly through the Cisco Command Line Interface (CLI), enabling proactive network health monitoring and rapid troubleshooting of fiber link integrity issues.

Can I request a custom quote for a large volume purchase of Cisco modules? +

Absolutely. At BuyRouterSwitch.com, we specialize in supporting large-scale enterprise deployments and infrastructure upgrades. If you require a high volume of QDD-400G-LR8-S modules or are planning a major network expansion, please reach out to our dedicated sales team. We are equipped to provide competitive bulk pricing and tailored procurement solutions to meet your project's specific budgetary and scaling requirements.

Why should I choose BuyRouterSwitch.com for my Cisco networking hardware? +

We are a trusted supplier committed to providing genuine Cisco networking hardware to enterprise clients worldwide. By purchasing through BuyRouterSwitch.com, you gain access to a reliable supply chain and expert sales support that understands the nuances of complex network architecture. We prioritize secure transactions and transparent service to ensure your procurement process is seamless, reliable, and perfectly aligned with your business infrastructure goals.

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