Cisco ISR4321/K9 – Integrated Services Router for Branch and Enterprise Networks

Description

The Cisco ISR4321/K9 is a modular Integrated Services Router from the Cisco 4000 Series, designed to deliver high-performance routing, security, and WAN connectivity for branch offices, enterprise edge, and regional sites. Built to handle growing network demands, it offers aggregate throughput up to 100 Mbps (default) or higher with performance licenses, making it ideal for medium-traffic environments that require secure and reliable connectivity.

This 1 RU rack-mountable platform features 2 NIM slots and an Enhanced Service Module (SM-X) slot, allowing network administrators to expand interfaces for additional WAN or LAN connectivity, integrate security services, or deploy SD-WAN capabilities. The ISR4321/K9 runs Cisco IOS XE, enabling advanced routing, VPN, firewall, and QoS features, along with automation and programmability for simplified management.

With built-in redundancy options and compact design, the ISR4321/K9 ensures high availability and flexible deployment in branch offices and enterprise sites. It is well-suited for converged network services, secure connectivity, and scalable enterprise applications, providing a reliable foundation for modern network infrastructures.

Key Features:

• Modular platform with 2 × NIM slots and 1 × SM-X slot for interface expansion

• Aggregate throughput up to 100 Mbps (upgradable with performance license)

• Multiple Gigabit Ethernet and SFP ports for flexible LAN/WAN connectivity

• Runs Cisco IOS XE for advanced routing, SD-WAN, VPN, firewall, and QoS

• Compact 1 RU rack-mount design for branch and enterprise deployment

• Supports high availability and redundancy for mission-critical networks

• Ideal for converged network services and secure branch connectivity