Cisco ISR4431-SEC/K9 Router: Secure, High-Performance Branch Gateway

What It Is

The Cisco ISR4431-SEC/K9 is an enterprise-class integrated services router from the Cisco ISR 4000 series, supplied as a security bundle with the SEC license pre-enabled. This model is designed for medium-to-large branch offices and campus edge deployments, combining routing, security, and application services in a single chassis.

Technical Details

• Model: ISR4431-SEC/K9
• Bundle Type: Cisco ISR 4431 Sec bundle with SEC license
• Chassis: 1RU rack-mountable form factor
• Routing Capability: Designed for high-performance WAN aggregation and multiprotocol routing
• Security License: Includes SEC feature set for advanced security services (VPN, firewall, etc.)
• Interface Support: Modular architecture with slots for NIM (Network Interface Module) and service modules
• Management: Supports Cisco IOS XE software platform

Configuration & Options

• Included: ISR4431-SEC/K9 router with SEC security license pre-installed
• Power Supply: Requires AC or DC power supply (verify compatibility with site power)
• Memory/Storage: Standard configuration with onboard flash and DRAM (specific capacities as per Cisco ordering guide)
• Module Options: Expandable via NIM slots and service module bays for additional WAN/LAN interfaces, voice, or advanced services

Operating Conditions

This router is intended for deployment in controlled indoor environments such as server rooms, telecommunication closets, or network equipment racks. It operates in environments with standard temperature and humidity ranges typical for enterprise IT infrastructure, and is suitable for 24/7 continuous operation in branch or regional offices. The security bundle makes it appropriate for sites requiring integrated threat defense and secure connectivity across distributed networks.