Cisco 4000 Series Integrated Services Routers

Build your digital branch

The Cisco 4000 Series Integrated Services Routers provide routing, hosting, security, and switching--all in a single, trustworthy platform. Build your digital branch to be secure, fast, and scalable. Quickly adopt the latest technologies, from SD-WAN to edge computing, while meeting the explosive network-performance needs driven by cloud applications and digital transformation.

The network, now more than ever

Your network plays a crucial role in keeping your organization running by facilitating remote work.

Features and benefits

Predictable performance

Get a high-availability architecture designed for mission-critical branches. The ISR 4000 delivers high-speed, predictable performance and modularity to connect from most remote locations.

Network services

Deploy key integrated network services for your branch in minutes, virtually or on-premises, without sacrificing performance.

Simplified management

Configure and monitor your network and enforce business policies through Cisco Catalyst Center and Cisco SD-WAN. Simplify network automation and turn hours of work into minutes.

Threat protection

Protect your branch site across the LAN and WAN and in the cloud with security integrated into the router. You no longer need a separate security appliance.

Explore the ISR 4000 Series models

Not what you're looking for? Try the Cisco Enterprise Router Selector to find the best router for your needs.

ISR 4221

  • GE/SFP integrated WAN ports
  • 1.2-Gbps performance
  • 75-Mbps encrypted throughput

ISR 4331

  • GE/SFP integrated WAN ports
  • 2-Gbps+ performance
  • 500-Mbps encrypted throughput

ISR 4431

  • PoE GE/SFP, GE/SFP integrated WAN ports
  • 4-Gbps + performance
  • 900-Mbps encrypted throughput

ISR 4461

  • 10 GE SFP+, PoE GE/SFP, GE/SFP integrated WAN ports
  • 10-Gbps+ performance
  • 7-Gbps encrypted throughput

Deploy SD-WAN your way with Cisco DNA software

Simple, flexible software subscription suites help you achieve the latest software-defined WAN innovations and provide centralized management with security, application-aware policies, segmentation, and optimization for cloud connectivity.

Why upgrade to an ISR 4000 Series router

Power in a modest form factor

The ISR 4000 delivers performance, reliability, and security to WAN branches without taking up much space.


The industry-leading ISR 4000 can be managed centrally with Cisco SD-WAN.


The ISR 4000's hardware defenses and responsible supply chain protect product and data integrity.

Accelerate your success with services from Cisco Customer Experience

Now you can adopt SD-WAN with ease and confidence, thanks to our trusted expert resources.

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