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Cisco 4000 Series Integrated Services Routers

Get your branch site ready for digital

Protect your branch site and prepare it for the future with the Cisco 4000 Series ISR digital-ready platform. Simplify day-to-day IT management. Provide a scalable, flexible foundation so you can quickly integrate leading IT initiatives like SD-WAN and edge compute, while meeting the explosive network performance need driven by cloud-based application adoption.

Explore the 4000 Series ISR models

The 4000 Series offers solutions for highly secure SD-WAN connectivity, application experience, unified communications, network automation, virtualization, and branch and direct Internet access security–all in one platform.

ISR 4221

  • GE/SFP integrated WAN ports
  • 1.2-Gbps performance
  • 75-Mbps encrypted throughput
  • Full IOS XE SD-WAN support
  • Cyberthreat protection through Trustworthy Systems framework

ISR 4321

  • GE/SFP integrated WAN ports
  • 2-Gbps+ performance
  • 100-Mbps encrypted throughput
  • Full IOS XE SD-WAN support
  • Cyberthreat protection through Trustworthy Systems framework

ISR 4331

  • GE/SFP integrated WAN ports
  • 2-Gbps+ performance
  • 500-Mbps encrypted throughput
  • Full IOS XE SD-WAN support
  • Cyberthreat protection through Trustworthy Systems framework

ISR 4351

  • PoE GE/SFP, GE/SFP integrated WAN ports
  • 2-Gbps+ performance
  • 500-Mbps encrypted throughput
  • Full IOS XE SD-WAN support
  • Cyberthreat protection through Trustworthy Systems framework

ISR 4431

  • PoE GE/SFP, GE/SFP integrated WAN ports
  • 4-Gbps + performance
  • 900-Mbps encrypted throughput
  • Cyberthreat protection through Trustworthy Systems framework

ISR 4451

  • PoE GE/SFP, GE/SFP integrated WAN ports
  • 4-Gbps+ performance
  • 1.6-Gbps encrypted throughput
  • Cyberthreat protection through Trustworthy Systems framework

ISR 4461

  • 10 GE SFP+, PoE GE/SFP, GE/SFP integrated WAN ports
  • 10-Gbps+ performance
  • 7-Gbps encrypted throughput
  • Cyberthreat protection through Trustworthy Systems framework

Need a little guidance?

Use our Router Selector to find the right Cisco router for your needs.

 

Feature highlights

Virtualization ready

Host virtualized network functions and applications at any time and in any place. Flexible deployment options mean freedom of choice.

Network automation

Configure and monitor your network and enforce business policies through Cisco DNA Center and Cisco SD-WAN. Simplify network management and turn hours of work into seconds. 

Branch threat defense

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.

New enterprise branch networking architectures

Understanding the market requirements, fundamental changes, and the need to adapt: presented by Enterprise Strategy Group.

Deploy Cisco SD-WAN on your ISR or ASR

With a simple software update, extend intent-based networking to your WAN.

Successfully manage your network across multiple clouds

Improve your cloud application experience in four easy steps.

See what customers say

Accelerate your journey today with Cisco Services

Migrate, adopt, deploy, and securely manage your routing solution with ease and confidence.

Resources

Compare Models
Learn about the similarities and differences of the models within this product series.

Data Sheets and Literature

Interfaces and Modules

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