Cisco ISR4451-X-AX/K9 Router – High-Performance Enterprise Edge

What It Is

The Cisco ISR4451-X-AX/K9 is a modular enterprise router from the Cisco ISR 4000 series, specifically configured as an AX bundle with Application Experience (APP) and Security (SEC) software licenses. This model is designed for medium-to-large branch offices and WAN aggregation points, delivering integrated routing, security, and application performance capabilities in a single chassis.

Technical Details

• Product Type: Modular integrated services router (ISR)
• Series: Cisco ISR 4000
• Part Number: ISR4451-X-AX/K9
• Licensing: APP (Application Experience) and SEC (Security) licenses included
• Chassis Form Factor: Rack-mountable, 2 RU
• Interface Slots: Supports Cisco NIM (Network Interface Module) slots for WAN/LAN connectivity
• Performance Class: High-end branch/aggregation routing with hardware-based encryption

Configuration & Options

• Included Licenses: APP license enables application visibility and control; SEC license provides advanced security features (VPN, firewall, etc.)
• Module Compatibility: Accepts a range of Cisco NIMs and SM (Service Module) options for flexible interface expansion
• Software: Runs Cisco IOS XE, supporting advanced routing protocols and SD-WAN readiness
• Spare/Replacement: Available as a standalone unit; additional power supplies and interface modules ordered separately

Operating Conditions

This router is intended for deployment in controlled environment (indoor) telecommunications rooms or data centers within enterprise or service provider networks. It operates in environments requiring high availability, with support for redundant power (when configured) and sustained 24/7 operation. The unit is suitable for EU markets, including Poland, where compliance with local regulatory standards is assumed for Cisco networking equipment.