Description:

The Cisco ISR4451-X/K9 Integrated Services Router is used in enterprise networking systems to provide secure routing, WAN connectivity, and integrated network services for branch offices and distributed network environments. Commonly installed in corporate branch offices, enterprise edge networks, telecommunications infrastructure, and data communication systems where high-performance routing and advanced security features are required. Network engineers and IT infrastructure teams use this router for network expansion, WAN connectivity upgrades, and replacement of legacy routers to maintain reliable and secure enterprise network operations.

Applications:

The Cisco ISR4451-X/K9 router is designed for enterprise branch and edge network deployments requiring high-performance routing and integrated security services. It is widely used in corporate offices, financial institutions, government facilities, and large distributed organizations where reliable WAN connectivity and secure data communication are critical. The router supports advanced networking functions including VPN connectivity, firewall services, traffic management, and application-aware networking, allowing organizations to manage secure communication between remote locations and central data centers.

Technical Specifications:

• Manufacturer Part Number (MPN): ISR4451-X/K9
• Product Type: Integrated Services Router
• Series: Cisco ISR 4000 Series
• Ethernet Ports: 4 × Gigabit Ethernet ports
• Routing Throughput: Up to 1–2 Gbps (license dependent)
• WAN Interface Support: NIM and SM interface modules supported
• Security Features: Integrated firewall, VPN, and advanced security services
• Processor: Multi-core CPU architecture
• Memory: 4 GB DRAM (expandable)
• Storage: 8 GB internal flash memory
• Power Supply: Dual AC power supply support
• Management Interfaces: CLI, SNMP, Web-based management
• Mounting Type: Rack-mountable (1U)
• Operating Temperature Range: 0 °C to 40 °C

Common Replacements:

• Cisco ISR4331/K9 Integrated Services Router
• Cisco ISR4431/K9 Integrated Services Router
• Cisco Catalyst C8300-1N1S-4T2X Edge Router