Juniper QSFP56-DD QDD-400G-SR8 400G SR8 Transceiver | QSFP56-DD, Enterprise

When the fabric needs more throughput without more front-panel clutter, this is the class of optics that belongs in the design. Juniper QDD-400G-SR8 is a QSFP56-DD transceiver built for 400G short-reach connectivity over multimode fiber, making it well suited to leaf-spine cores, high-bandwidth aggregation layers, and switch platforms where every port matters. The SR8 optical profile is designed for short-distance data center transport, where predictable reach and dense packaging are more important than long-haul capability. QSFP56-DD gives you the physical density to support modern 400G architectures while keeping the optical layer aligned to in-rack and row-scale deployments. For teams standardizing on Juniper optics, this module supports a clean migration path to higher-speed fabrics without overbuying reach you will not use. Choose it when you need 400G performance in a compact form factor and want the cabling, density, and operational simplicity that come with a purpose-built short-reach transceiver.