Cisco ISR4431-AX/K9 Enterprise Router 1Gbps Multi-Core WAN

• Enterprise branch office connectivity
• Regional headquarters WAN aggregation
• Secure site-to-site VPN deployment
• Hybrid cloud edge networking
• Financial branch network modernization
• Healthcare facility secure communications
• Retail chain multi-location networking
• Campus edge infrastructure deployment
• Government agency branch connectivity
• Disaster recovery and business continuity networking

• Enterprise-class integrated services routing platform
• Up to 1 Gbps aggregate system throughput
• Multi-core CPU architecture for application-aware services
• Four integrated Gigabit Ethernet interfaces
• Three Network Interface Module expansion slots
• One Integrated Services Card slot
• Cisco IOS XE operating system support
• Modular architecture for future network expansion
• Supports secure VPN and encrypted WAN connectivity
• Optimized for hybrid cloud connectivity
• Designed for high availability deployments
• Enables infrastructure consolidation and operational efficiency
• Supports enterprise virtualization initiatives
• Scalable platform for long-term business growth
• Protects technology investments through modular upgrades

• Brand: Cisco
• Part Number: ISR4431-AX/K9
• Product Family: Cisco ISR 4000 Series
• Product Model: ISR4431-AX/K9
• Product Type: Integrated Services Router
• Aggregate Throughput: Up to 1 Gbps
• Integrated Gigabit Ethernet Ports: 4
• RJ-45 Ports: 4
• SFP Ports: 4
• Network Interface Module (NIM) Slots: 3
• Integrated Services Card (ISC) Slot: 1
• Data Plane Memory: 2 GB
• Control/Services Memory: 4 GB
• Maximum Control/Services Memory: 16 GB
• Flash Memory: 8 GB
• Maximum Flash Memory: 32 GB
• USB 2.0 Type-A Ports: 2
• USB Console Port: 1
• RJ-45 Console Port: 1
• RJ-45 Auxiliary Port: 1
• Power Supply Options: Internal AC, Internal DC, Internal PoE
• Form Factor: 1RU Rack Mount
• Operating System Compatibility: Cisco IOS XE
• Online Insertion and Removal (OIR): Supported

WHY CHOOSE THIS PRODUCT?

• Organizations select the Cisco ISR4431-AX/K9 when they need a scalable enterprise router capable of supporting growing branch traffic, secure WAN services, and cloud-ready networking without frequent hardware replacement. Compared with lower ISR 4000 Series models, it offers higher throughput, increased expansion capacity, and greater interface flexibility, making it a stronger fit for expanding enterprise environments. Its compatibility with Cisco IOS XE, modular upgrade path, support for hybrid cloud strategies, and long hardware lifecycle help reduce procurement risk, simplify infrastructure modernization, improve operational efficiency, and deliver a stronger long-term return on investment.