Gartner Blog Network


Comparing Cisco ACI and VMware NSX

by Andrew Lerner  |  June 9, 2015  |  3 Comments

“Cisco ACI versus VMware NSX” is one of the top questions we get on the networking team from Gartner clients. That said, ACI and NSX provide very different approaches to solving networking challenges – ACI is a programmable Ethernet Fabric that integrates hardware and software, while NSX is a network overlay.

Both were included in the 2015 Data Center Networking Magic Quadrant and my colleague, Simon Richard just published research specifically on this topic. Choosing between ACI and NSX is a strategic network decision, and is way beyond just a networking thing. As Simon points out: The choice should include significant input from more than just than the network team. The scope of the operational changes that will result from deploying either Cisco ACI or VMware NSX will justify a longer time horizon than the usual data center network upgrade.

And of course, there is always the option to run them together, which is also a topic of increasing interest from our clients: Because VMware NSX can run over any hardware, it is technically feasible to combine it with Cisco ACI. However, deploying both solutions together will be prohibitively expensive for most enterprises. As long as the NSX and APIC controllers do not communicate, enterprises will run duplicate functionality such as security policies and will run nested VXLAN tunnels, further complicating the architecture.

If you’re trying to decide between them, I would highly recommend checking out the research:

Comparing Cisco ACI and VMware NSX: Programmable Fabrics or SDN Overlays?

http://www.gartner.com/document/3062917

Summary: Enterprises are evaluating both Cisco ACI and VMware NSX to increase their data center network agility and fortify their security postures. These solutions offer different approaches for solving a similar set of challenges. This document provides guidelines for comparing the approaches.

Regards, Andrew

Additional Resources

Read Complimentary Relevant Research

100 Data and Analytics Predictions Through 2021

Over the next few years, data and analytics programs will become even more mission-critical throughout the business and across industries....

View Relevant Webinars

Three Stages of Platform Planning: Modernize, Innovate, Reinvent

Application leaders must understand the trends in application platforms to choose and plan new solutions, platform technologies, cloud...

Category: just-published  networking  sdn  staffing  

Tags: aci  cisco  fabrics  nsx  staffing-2  vmware  vxlan  

Andrew Lerner
Research Vice President
4 years at Gartner
19 years IT Industry

Andrew Lerner is a Vice President in Gartner Research. He covers enterprise networking, including data center, campus and WAN with a focus on emerging technologies (SDN, SD-WAN, and Intent-based networking). Read Full Bio


Thoughts on Comparing Cisco ACI and VMware NSX


  1. Farid adel mohamed mostafa zaalook says:
    August 29, 2015 at 11:58 pm

    I need more detailed information because I want to reengineer our data center according to performance and cost optimisation concepts.
    Farid Zaalook

    Reply
  2. Farid adel mohamed mostafa zaalook says:
    August 30, 2015 at 12:05 am

    I need more detailed information because we are going to reengineer our data center platform according to performance and cost optimisation concepts.
    Farid zaalook

    Reply
    • Andrew Lerner says:
      August 30, 2015 at 2:59 pm

      Farid, thanks for reading and commenting. The full research note goes into much more detail and you can also schedule inquiry on the topic with Gartner analysts. You can email directly if you have any questions on this…

      Regards, Andrew

      Reply


Leave a Reply

Your email address will not be published. Required fields are marked *

Comments or opinions expressed on this blog are those of the individual contributors only, and do not necessarily represent the views of Gartner, Inc. or its management. Readers may copy and redistribute blog postings on other blogs, or otherwise for private, non-commercial or journalistic purposes, with attribution to Gartner. This content may not be used for any other purposes in any other formats or media. The content on this blog is provided on an "as-is" basis. Gartner shall not be liable for any damages whatsoever arising out of the content or use of this blog.