Juniper QSFP56-DD QDD-400G-LR4-10 400G LR4-10 | QSFP56-DD, Enterprise

Keep 400 GbE links moving across longer-reach single-mode fiber with the Juniper QSFP56-DD 400G LR4-10 transceiver. Designed for dense infrastructure where every port matters, this module supports high-capacity transport without forcing a move to larger optics or lower-speed lanes. It is built for environments that need predictable optical performance, clean integration, and the reach required for modern spine, aggregation, and interconnect architectures. The QSFP56-DD form factor helps preserve port density while delivering 400G throughput, making it a practical choice for teams standardizing on high-bandwidth fabrics. LR4-10 optics are suited to longer-reach deployments where short-reach modules fall short, especially when you need to connect racks, rows, or adjacent facilities with fewer compromises in design. For infrastructure teams, that means fewer bottlenecks, cleaner scaling, and a transceiver that fits into a premium network plan rather than a temporary fix. Choose this module when link quality, reach, and density are all non-negotiable. It is the kind of component that supports a higher-value network architecture by reducing the need for redesigns as traffic grows.