Juniper QSFPP-40G-LR4-C 40G QSFP+ Transceiver | LR4, Enterprise, Fiber

Keep 40 GbE links stable over longer distances with the Juniper QSFPP-40G-LR4-C QSFP+ transceiver. Its LR4 optical design is intended for single-mode fiber deployments where reach matters and port density still has to stay high. That makes it a strong fit for core switching, aggregation, and inter-rack connectivity in enterprise and data center networks. Compared with short-reach optics, LR4 gives infrastructure teams more flexibility when switch locations are separated by longer cable paths or structured cabling runs. The QSFP+ form factor preserves valuable front-panel space, helping you maintain a dense port layout without sacrificing optical reach. For teams standardizing on 40 GbE, this module supports a clean, purpose-built path to long-reach transport. Choose this transceiver when you need dependable 40 GbE performance over single-mode fiber and want to avoid overbuying optics for shorter links. It is a practical option for networks that value predictable behavior, compact packaging, and vendor-aligned deployment in higher-value switching environments.