Juniper QSFP-DD800 2x400G LR4 Transceiver | 800G, QSFP-DD800, Enterprise

Support demanding aggregation and spine deployments with a transceiver designed for high-capacity optical transport. The QSFP-DD800 2x400G LR4 module delivers two 400G lanes in one compact form factor, helping teams preserve switch density while scaling bandwidth across core interconnects and high-traffic fabrics. LR4 optics are built for long-reach single-mode deployments where distance, signal integrity, and predictable performance matter. That makes this module a strong fit for environments that need to move large volumes of traffic between switches, leaf-spine tiers, or adjacent data halls without giving up valuable front-panel space. For infrastructure teams standardizing on Juniper optics, this module aligns with the performance expectations of premium switching platforms and the operational discipline of production networks. It is the kind of component chosen when link reliability, port efficiency, and clean migration paths matter more than lowest-cost alternatives.