Cisco ISR4331-SEC/K9 Router NO CPU CLOCK ISSUE ISR4331SEC/K9

Description:

The Cisco ISR4331-SEC/K9 Integrated Services Router is used in enterprise branch network infrastructures to provide secure WAN connectivity, advanced routing capabilities, and integrated network security services within Cisco IOS XE environments. Commonly installed in branch offices, enterprise WAN edge deployments, and business communication infrastructures where secure data routing, VPN connectivity, and scalable network performance are required. Maintenance teams, network engineers, and system integrators use this router for branch network deployments, infrastructure upgrades, replacement of legacy routing platforms, and expansion of secure enterprise networking environments.

Applications:

The Cisco ISR4331-SEC/K9 router is deployed in enterprise networking environments where secure routing and WAN connectivity are required for distributed business operations. It is commonly used in corporate branch offices, remote enterprise locations, and managed network infrastructures where organizations need reliable connectivity between local networks, data centers, and cloud services. Network administrators integrate this router into Cisco-based infrastructures to support VPN connectivity, secure data routing, and enterprise communication systems.

Technical Specifications:

• Manufacturer Part Number (MPN): ISR4331-SEC/K9
• Product Type: Integrated Services Router with Security License
• Router Series: Cisco 4000 Series ISR
• WAN Interfaces: 2 × Gigabit Ethernet ports
• Default Throughput: Up to 100 Mbps (performance upgradeable via license)
• Expansion Slots: 2 × Network Interface Module (NIM) slots
• USB Ports: 2 × USB ports for storage and configuration
• Console Ports: RJ-45 console and mini-USB console ports
• Security Features: Integrated VPN, firewall, and advanced security services
• Operating System: Cisco IOS XE
• Mounting: Rack mountable

Common Replacements:

• Cisco ISR4321-SEC/K9 Integrated Services Router
• Cisco ISR4351-SEC/K9 Integrated Services Router
• Cisco ISR4431-SEC/K9 Integrated Services Router