Cisco ISR4331-AX/K9 Seck9 . ISR 4331-SEC/K9 Router NO CPU CLOCK ISSUE ISR4331AX/K9

Description:

The Cisco ISR4331-AX/K9 Integrated Services Router is a secure enterprise branch router designed to deliver advanced routing, application services, and integrated security for Cisco WAN and unified communications infrastructures. It operates on the Cisco ISR 4000 Series platform and includes security licensing capabilities that enable encrypted VPN connectivity, firewall features, and advanced network services for distributed enterprise environments. The router supports modular expansion and high-performance WAN routing, making it suitable for modern branch office deployments that require reliable connectivity and secure data transmission. Commonly installed in enterprise branch offices, retail networks, financial institutions, and distributed corporate locations where secure WAN connectivity and scalable routing infrastructure are required. Maintenance teams, network administrators, and system integrators deploy this router for network upgrades, secure WAN deployments, infrastructure expansion, or replacement of legacy branch routers.

Applications:

The Cisco ISR4331-AX/K9 router is used in enterprise and branch office networking environments to provide secure routing, VPN connectivity, and integrated network services for distributed business infrastructures. It is commonly deployed in corporate branch offices, government facilities, retail locations, and financial institutions where organizations require secure internet access, reliable WAN connectivity, and centralized network management. Network engineers install this router to support encrypted VPN connections, cloud connectivity, voice and data services, and secure communication between branch offices and central data centers.

Technical Specifications:

• Manufacturer Part Number (MPN): ISR4331-AX/K9
• Brand: Cisco
• Product Type: Integrated Services Router
• Series: Cisco ISR 4000 Series
• WAN/LAN Ports: 3 × 10/100/1000 Gigabit Ethernet ports
• Performance: Up to 100 Mbps base throughput (upgradable with performance licenses)
• Security Features: SEC/K9 security license with VPN and encryption support
• VPN Support: IPsec VPN and SSL VPN capabilities
• Expansion Slots: Network Interface Module (NIM) slots and service module support
• USB Ports: 2 × USB ports for storage and management
• Operating System: Cisco IOS XE
• Management Interfaces: CLI, SNMP, Cisco network management platforms
• Mounting Type: Rack-mountable (1U form factor)

Common Replacements:

• Cisco ISR4321/K9 Integrated Services Router
• Cisco ISR4351/K9 Integrated Services Router
• Cisco C1111-8P Integrated Services Router