Juniper QSFP56-DD 400G DR4 Transceiver | 400G, QSFP56-DD, Enterprise

Keep east-west traffic moving at 400G without giving up rack density. The Juniper QSFP56-DD 400G DR4 transceiver is built for short-reach optical links in high-throughput data center fabrics, where every port must carry more traffic with less space and less complexity. Its QSFP56-DD form factor supports the bandwidth demands of modern aggregation and leaf-spine designs, making it a strong fit for environments that need to scale capacity without expanding chassis count. DR4 optics are well suited to short-distance connections between switches, routers, and high-performance compute infrastructure. For teams standardizing on Juniper networking, this module aligns with the platform expectations of enterprise and service provider deployments that depend on consistent optical behavior and tight operational control. It is the kind of transceiver chosen when the cost of congestion, oversubscription, or repeated refresh cycles is higher than the price of the right optic. Use it where 400G density, short-reach performance, and Juniper compatibility need to come together in a single module.