Cisco ISR4431/K9 Integrated Services Router

Overview

The Cisco ISR4431/K9 Router is an enterprise-class router from the Cisco 4000 Series, designed for branch and campus networks that demand high performance, comprehensive security, and integrated services. This compact 1U rack-mount router supports advanced routing, security, voice, and WAN optimization features. With flexible modular expansion options and scalable throughput, the ISR4431/K9 delivers the power and efficiency required to support SD‑WAN, unified communications, and cloud connectivity—all while providing a pay-as-you-grow licensing model to suit evolving network demands.

Key Features

• Scalable Throughput: Delivering configurable performance ranging from 200 Mbps up to 400 Mbps with upgrade licenses available.

• Modular Design: Features dual NIM slots and an integrated service (ISC) slot for voice, video, and additional WAN interfaces.

• Integrated Security: Supports hardware-accelerated encryption, IPSec VPN, SSL VPN, firewall, NAT, ACL, and advanced QoS.

• Advanced Routing: Runs on Cisco IOS XE software, providing robust support for routing protocols such as OSPF, BGP, EIGRP, and RIP.

• Unified Services: Offers integrated support for voice and unified communications modules for converged network environments.

• Compact & Efficient: A 1U rack-mount form factor optimized for branch offices, offering both power efficiency and high availability.

Technical Specifications