Cisco CPAK-100G-LR4 100G Transceiver 10 km SMF | Enterprise Optics — CON-OS-RSP5TR5R

Keep high-speed links open across long campus and data center runs with Cisco CPAK-100G-LR4 optics for single-mode fiber. Designed for 100G Ethernet deployments, this transceiver supports 10 km reach, making it a strong fit for aggregation layers, inter-building links, and backbone paths where distance rules out short-reach optics. The CPAK form factor is chosen for platforms that need dense 100G connectivity without compromising optical reach. LR4 optics are built for structured fiber plants and production networks that demand consistent transport across longer spans. For teams standardizing on Cisco infrastructure, this module helps preserve compatibility and operational consistency across critical uplinks. This is the kind of optic you specify when the link is not optional. It is for environments where downtime is expensive, fiber runs are already in place, and the network design calls for dependable 100G transport over single-mode fiber. If you are replacing shorter-reach modules or planning a long-haul upgrade inside the enterprise, this part belongs in the design. Ideal For Inter-building backbone links across a campus fiber plant Aggregation uplinks between core and distribution switches Long-reach 100G transport in enterprise data centers Replacement optics for Cisco environments standardized on CPAK Why This Product 1 Longer reach than short-range 100G optics 2 Built for single-mode fiber backbone links 3 CPAK form factor for Cisco platform compatibility 4 10 km design suits campus and inter-building runs