The Cisco ISR4221/K9 is a compact, reliable, and secure router from the Cisco 4000 Series Integrated Services Routers (ISR), designed specifically for small to medium branch offices and enterprise edge networks. Combining consistent performance, advanced security, and flexible connectivity, the ISR4221/K9 provides an efficient solution for organizations looking to support business-critical applications while maintaining cost-effective deployment.
With a maximum throughput of 75Mbps, the ISR4221/K9 is ideal for small office environments requiring dependable WAN performance for cloud-based applications, VoIP, video conferencing, and data transfers. Despite its compact size, it supports simultaneous services without compromising performance, making it perfect for growing branch office networks.
The router features 2 WAN/LAN ports, providing flexible connectivity options for primary and secondary links, redundancy, or network segmentation. Additionally, it includes 1 SFP (Small Form-factor Pluggable) port, enabling fiber-optic connectivity for high-speed, long-distance networking. This combination of copper and fiber interfaces ensures adaptability for both current and future network needs.
Security is a core strength of the ISR4221/K9. The router comes equipped with built-in security features including VPN support, firewall, intrusion prevention, and secure segmentation. These features protect sensitive business traffic, safeguard remote connections, and maintain compliance with enterprise security policies. Cisco’s trusted architecture ensures your network remains secure from evolving threats.
Powered by Cisco IOS XE software, the ISR4221/K9 offers enterprise-grade management, programmability, and automation. Features such as Quality of Service (QoS), application visibility, and traffic analytics allow IT teams to optimize network performance, prioritize critical services, and gain actionable insights into network operations. Its modular design allows expansion with additional service modules to meet evolving network requirements.
The ISR4221/K9 is compact, energy-efficient, and rack-mountable, making it suitable for deployment in small branch offices, retail locations, or corporate edge networks. Its combination of performance, reliability, and security ensures seamless integration into existing enterprise infrastructure, providing long-term value and scalable solutions.
Whether managing small office networks, connecting branch offices to corporate headquarters, or supporting secure VPN connections, the Cisco ISR4221/K9 delivers consistent, secure, and reliable routing for businesses seeking enterprise-class networking in a compact footprint.
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