Cisco 4000 Series Integrated Services Routers Configuration Guide

DL380 Gen10
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.

  1. Cisco 4000 branch router is a digital-ready platform that offers at least 4 GE ports, 3 NIM slots, 2 SM slots and 8 CPU core ISM slots.
  2. It consolidates many must-have IT functions, including network, security, compute, storage, and unified communications. You can get everything you need in a single platform.
  3. The ISR 4000 Series is modular and upgradable, so you can add new services without changing equipment.
  4. It supports multiple application-aware services concurrently while maintaining WAN performance of up to 2 Gbps, even during heavy traffic loads. The backplane architecture supports high-bandwidth, module-to-module communication at speeds up to 10 Gbps.
Now the Cisco 4000 Series contains the following platforms: the 4461, 4451, 4431, 4351, 4331, 4321 and 4221 ISRs.

In this article we will introduce the main 7 Cisco 4000 router configurations: ISR4221/K9, ISR4321/K9, ISR4331/K9, ISR4351/K9, ISR4431/K9, ISR4451-X/K9, and ISR4461/K9.

: Cisco 4000 Series Integrated Services Routers Configuration Guide
Comparison of Cisco ISR 4000 Models
Cisco 4000 Series Integrated Services Routers Frequency Asked Question
Guide to Select New Cisco Routers
Guide to Upgrade Your ISR G1 and ISR G2 Routers to ISR 4000

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