Juniper Networks SRX3K-NPC Network Processing Card

The Juniper SRX3K-NPC Network Processing Card is a chassis plug-in line card for Juniper SRX3000 series security gateway systems, delivering dedicated hardware-accelerated packet processing and security service operations to boost throughput and reduce latency in demanding networks. Compatible with SRX3400, SRX3600, and SRX3800 chassis, it handles packet forwarding and security function processing under Junos OS, with hot-swappable design and chassis-based cooling to support scalable performance in data centers, core networks, and secure edge deployments. As a hardware-accelerated processor for security services, the SRX3K-NPC offloads critical traffic handling from the main system, enabling higher throughput and more efficient execution of security workloads such as firewalling and threat inspection across busy enterprise and service-provider environments. Common replacements include SRX3K-SPC, SRX3K-NPC2, and SRX3K-NPC3, indicating its role as a high-throughput packet processor for security-focused workloads in enterprise and service provider environments. Designed for use in SRX3000 series platforms—specifically the SRX3400, SRX3600, and SRX3800—the SRX3K-NPC provides a direct upgrade path within existing chassis to expand processing capacity while preserving Junos OS-based security capabilities.