Cisco 400G QSFP-DD SR8 Transceiver

The Cisco 400G QSFP-DD SR8 transceiver is a short-reach, multi-lane optical module designed for high-density 400 Gigabit Ethernet connectivity within data center environments. It employs 8 parallel 50G lanes over standard single-mode fiber (SMF), enabling compact form-factor deployment in line-card and switch architectures that support QSFP-DD MSA specifications.

This transceiver operates over distances up to 100 meters on OM5 multimode fiber or extended reaches on single-mode deployments, making it suitable for intra-rack and inter-rack fabric interconnection. The SR8 architecture minimizes power consumption and thermal footprint compared to alternative 400G optics, supporting line-rate forwarding in modern Ethernet switch and router platforms.

Launched in Q1 2023, the QDD-400G-SR8-S addresses enterprise demand for high-capacity fabric upgrades in AI-driven data center architectures, GPU cluster interconnects, and hyperscaler network expansion where density and thermal efficiency are critical deployment constraints.

Ideal for

• Intra-data-center fabric expansion between ToR (Top-of-Rack) and spine switch layers in large-scale deployments
• High-performance computing (HPC) and AI training cluster interconnects requiring ultra-low-latency, high-bandwidth inter-node communication
• GPU cluster networking for machine learning workloads across distributed compute nodes within campus or metropolitan distances
• Cloud infrastructure east-west traffic consolidation in multi-cabinet or multi-row data center layouts
• Hyperscaler network fabric upgrades supporting 400G+ line-rate switching in carrier-class environments
• Storage area network (SAN) acceleration for NVMe-oF and all-flash array deployments requiring sub-100m connectivity

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.