Cisco ISR 4000 Licenits FL-44-PERF-K9

The Cisco FL-44-PERF-K9 is a software performance license for ISR 4400 routers in the ISR 4000 series. It raises the authorized throughput ceiling on IOS XE, enabling ISR 4400 routers to handle significantly higher traffic volumes without replacing the chassis. Activation is performed through Cisco Smart Licensing.

This license is particularly well-suited to environments experiencing rapid WAN traffic growth: regional datacenters, VPN concentrators, or high-density SD-WAN infrastructures. It represents a cost-effective path to increasing the capacity of an existing ISR 4400. Genuine hardware, manufacturer warranty.