Juniper QSFPP-40GBASE-SR4 QSFP+ 40G SR4 Transceiver | 40GbE, Routing

Keep short-reach 40 GbE links stable where port density and signal integrity matter most. Juniper QSFPP-40GBASE-SR4 is a QSFP+ transceiver designed for 40 Gigabit Ethernet over multimode fiber, making it a practical fit for high-throughput routing and aggregation deployments. Its SR4 optical design supports parallel fiber transmission for short-distance connectivity, helping teams build compact switch-to-switch and router-to-switch links without moving to more expensive long-reach optics. The QSFP+ form factor preserves rack space while supporting the bandwidth needed for spine, leaf, and core-adjacent environments. For infrastructure teams standardizing on Juniper optics, this module fits the operational model of dense, short-reach interconnects where consistency matters as much as raw speed. It is well suited to environments that need dependable 40 GbE transport without overbuying reach or power budget. When the design goal is clean, repeatable connectivity across multimode runs, this transceiver keeps the network simple and the upgrade path controlled.