Name: Cisco ISR G2
Rating: 4.9 (26 reviews)

Overview

Product Information on Cisco ISR G2

Updated 13th October 2025

What is Cisco ISR G2?

Cisco ISR G2 is a software integrated with the Integrated Services Routers Generation 2 platform that delivers secure connectivity, network services, and unified communications for branch offices. The software supports routing, switching, wireless, security, voice, and application services within a single device, aiming to simplify network management and reduce operational costs. Cisco ISR G2 enables organizations to deploy a range of network services such as WAN optimization, intrusion prevention, VPN termination, and advanced voice features. The software is designed to address business requirements for increased bandwidth demands, scalable WAN connectivity, and integrated support for multiple branch office needs.

Overall experience with Cisco ISR G2

IT NETWORKING MANGER

50M - 250M USD, IT Services

FAVORABLE

“Stable Performance and Trusted Support Noted with Cisco ISR for Data Centers”

5.0

Aug 26, 2025

We use Cisco ISR's for MPLS cloud backhaul for our Data Centers and Cisco is Rock Solid.

Network Engineer Specialist

1B - 3B USD, Insurance (except health)

CRITICAL

“Love hate relationship”

3.0

Mar 7, 2017

We have a love/hate with both Cisco and their ISR series. We've found the previous gen of HW (18xx) ws actually more powerful from a compute standpoint. Also, if you don't have a cookie cutter break/fix issue then it's almost impossible to get support.

About Company

Company Description

Cisco is a company that specializes in networking technologies, particularly Internet Protocol (IP)-based solutions. It was established in 1984 by a group of computer scientists from Stanford University. As of today, Cisco has a global workforce, continuing to innovate in various fields, notably in routing and switching. Adding to its core business, the company also delves into emerging technologies including home networking, IP telephony, optical networking, security features, storage area networking, and wireless technology. Moreover, Cisco extends its expertise to offer a sweeping range of services such as technical support and advanced services. The company sells its products and services on an enterprise level, to commercial businesses, service providers, and end-users.

Company Details

Company type

Public

Year Founded

1984

Head office location

San Jose, United States

Number of employees

10001+

Annual Revenue

30B+ USD

Website

http://www.cisco.com

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Key Insights

A Snapshot of What Matters - Based on Validated User Reviews

Reviewer Insights for: Cisco ISR G2

Performance of Cisco ISR G2 Across Market Features

Cisco ISR G2 Likes & Dislikes

IOS and the fact that Cisco is rock solid and their support is great.

Reliability.

We had a large deployment of Cisco products. Being a seasoned Cisco user, it makes it easy to deploy the ISR G2 in the network at different tiers. The variety of available interfaces and variable bandwidth as per platform makes the business case easy to use them as per requirement.

Cisco costs a lot more than some of the other vendors.

Difficulty in getting support with complex issues.

The ISR G2 performance is really hit when used for the QoS because they use the same CPU for control and data plane

Top Cisco ISR G2 Alternatives

Peer Discussions

Cisco ISR G2 Reviews and Ratings

Recommended Gartner Insights

Magic Quadrant for WAN Optimization

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50M-1B USD

IT Services

Review Source

Stable Performance and Trusted Support Noted with Cisco ISR for Data Centers

Service Architect

Miscellaneous

Cisco ISR G2- CPE Platform

4.0

Nov 7, 2020

We use ISR G2 for for different service and mostly CPE. They fulfill the expectations and provide a good return of investment.

Sr Technical Engineer

Transportation

Cisco ISR G2

Feb 22, 2020

Cisco ISR G2 is amazing Product. The stability of the product and Hardware is great. We have been using this product for last 1 year across many locations and it just works super.

Senior System Administrator

Consumer Goods

1941 Routers - Dependable Work Horse

Dec 16, 2019

Functional L3 device (1941), capable of Internet and WAN edge security, NAT and all expected IGPs. Problems were few & far between with issues arising due to poor usage of debug commands so definitely the CPU utilization max could be hit fairly easily for a router running WAN edge purposes. I believe that's to be expected with the low tier G2 offering.

Sr. Network Engineer

1B-10B USD

Banking

Implementation was easy and straight forward

Apr 23, 2019

Installed a Cisco 2951 ISRG2 to be used as a Session Border Controller to integrate Cisco Unified Communications Manager with Office365 Voicemail features in the cloud. Solution worked very well and has been stable since it has been setup.