Description:

The Cisco ISR4221/K9 Integrated Services Router is used in enterprise branch network infrastructures to provide secure WAN connectivity, advanced routing capabilities, and integrated network services within Cisco IOS-based environments. Commonly installed in branch offices, enterprise WAN edge deployments, and business communication infrastructures where reliable routing, secure data transmission, and network service integration are required. Maintenance teams, network engineers, and system integrators use this router for branch network deployments, infrastructure upgrades, replacement of legacy routers, and expansion of enterprise WAN connectivity.

Applications:

The Cisco ISR4221/K9 router is deployed in enterprise branch networking environments where secure routing and WAN connectivity are required. It is commonly used in corporate branch offices, distributed enterprise locations, and remote business sites that require reliable communication with centralized data centers or cloud-based services. Network administrators integrate this router into Cisco-based infrastructures to support secure data routing, VPN connectivity, unified communications services, and reliable WAN access within managed enterprise networks.

Technical Specifications:

• Manufacturer Part Number (MPN): ISR4221/K9
• Product Type: Integrated Services Router
• Router Series: Cisco 4000 Series ISR
• WAN Ports: 2 × Gigabit Ethernet ports
• Performance: Up to 35 Mbps default throughput (upgradeable with performance licenses)
• Expansion Slots: 1 × Network Interface Module (NIM) slot
• USB Ports: 2 × USB ports for storage and configuration
• Console Ports: RJ-45 console and mini-USB console
• Security Features: Integrated VPN, firewall, and advanced security services
• Software Support: Cisco IOS XE operating system
• Mounting: Rack mountable or desktop installation

Common Replacements:

• Cisco ISR4321/K9 Integrated Services Router
• Cisco ISR4331/K9 Integrated Services Router
• Cisco ISR4431/K9 Integrated Services Router