Juniper 400GBASE QSFP56-DD DR4 Optical Transceiver

The Juniper 400GBASE QSFP56-DD DR4 is a pluggable optical transceiver engineered for 400 Gigabit Ethernet connectivity over single-mode fiber in enterprise data-center and AI infrastructure deployments. Implementing the QSFP56-DD (Quad Small Form-factor Pluggable Double Density) form factor, this module operates at distances up to 2 kilometers, making it ideal for intra-campus and metropolitan area network links within large-scale facilities.

This transceiver utilizes 4-lane Dense Wavelength Division Multiplexing (DWDM) technology on standard ITU-T grid wavelengths, enabling efficient spectral utilization and seamless integration with existing Juniper QFX and PTX platforms. The DR4 designation indicates dual-rate capability with optimized optical characteristics for extended single-mode reach, supporting modern data-center switching architectures that demand ultra-high throughput with minimal latency.

Designed for AI cluster interconnection, high-performance computing, and core routing applications, the QSFP56-DD-400G-DR4 delivers the bandwidth density and reliability required for next-generation enterprise networks handling intensive workload consolidation and multi-petabyte data movement.

Ideal for

• High-performance compute cluster interconnect for AI/ML training and inference workloads requiring sub-millisecond latency
• Data-center core routing and fabric aggregation in QFX/PTX switched environments
• Inter-data-center backbone links spanning up to 2 km across campus or metropolitan fiber infrastructure
• Real-time analytics and financial transaction processing networks demanding consistent 400G throughput
• Large-scale video content distribution and streaming platform backbone connectivity
• Cloud infrastructure east-west traffic optimization and multi-tenant tenant isolation fabrics

Technical specifications

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