Intent Based Networking & SD-Branch Evolution

How NetOps teams can evolve to meet the challenges of digital transformation

I recently attended Interop ITX in Las Vegas and one of the breakfast briefings at the show was hosted by IDC. The topic was centered around the intelligent automation of networks, and more specifically the rise of "intent based networking."

Intent based networking (IBN) is defined as: a network management system that uses advanced automation, visibility and analytics tools to implement, secure and dynamically maintain the network operator's desired state of the network. Essentially, this means NetOps teams are able to leverage automation to help support cloud adoption, hybrid networks, and general "digital transformation" by looking at three core pillars across the enterprise: 1) Advanced Automation, 2) Increased Visibility, and 3) Actionable Analytics.

Intent based networking is derived from the challenge to digitally transform an enterprise. IDC used a couple of slides that really show the complexity of what it means for an organization to move towards that elusive marketing buzzword "digital transformation." The slide below is how some people think about digital transformation:

Digital Transformation

However, this is the reality of what organizations face when trying to digitally transform their enterprise:

Digital Transformation Reality

Not only does this bring increased IT and network complexity to an organization, it also creates challenges across teams from security to infrastructure to applications. Something is needed to help manage all of these added challenges.

Why Does Intent Based Networking Matter for Remote Sites?

First, we need to start with enterprise WAN. Remote site WAN deployments were common when enterprises first needed to connect branch offices to the corporate datacenter. However, WAN is not built for cloud, and in today's industry a lot of branch offices are increasing the use of SaaS applications. This makes remote site WAN workflows difficult for enterprises to use due to the lack of agility, flexibility, and efficiency.

So, where does that leave enterprises looking to improve remote site workflows? SD-WAN seems like a good place to start. SD-WAN solutions have been around for a while and they've done a good job making the infrastructure more dynamic and secure, but they don't answer every problem. IDC presenter, Rohit Mehra, laid out what's next for SD-WAN and he broke it down into 4 bullets:

  • Intent + Increased Intelligent Automation - applying business intent to app delivery and network performance
  • Machine Learning and AI - adapt to changing conditions
  • Pervasive Security - secure segmentation on per app basis
  • Movement toward SD-Branch - SD-WAN is a conduit to, and integral component of, the software-defined branch

The last bullet touches on an interesting point about the branch office evolving into a software-defined branch. Rohit predicts that in the next five years, SD-WAN will expand to incorporate "SD-Branch" with highly virtualized functions vs. hardware appliances at branch/remote sites. Virtual networking and functions makes the branch more dynamic and responsive from an architecture standpoint.

The chart below shows the key differences between an SD-WAN environment and an SD-Branch environment:

SD-WAN to SD-Branch Network

What's Next for Intent Based Networking?

IDC made a few predictions about what the industry can expect in the years to come. Their predictions centered around network visibility and its importance for organizations looking at "digital transformation" or cloud architectures. Rohit believes network visibility is a gap in cloud and digital strategies, but is the key to automation and intent based networking.

Network Visibility is Key to Success

A couple of other predictions include:

  • In the near term (6-to-12 months), monitoring for SD-WAN links and specific SaaS services will see the greatest levels of investment
  • Over the 12-to-24 month period, enterprises will invest in and integrate new network performance monitoring capabilities with existing application performance management platforms

These predictions, along with Rohit's explanation of intent based networking and the evolution of SD-branches, opened my eyes to improvements on the horizon for enterprises looking to answer some of the challenges faced by their current remote site workflows.

The biggest takeaway, however, was this: network visibility is critical for all companies looking to digitally transform or improve their cloud architecture deployment. Those of you facing pressure to support massively complex infrastructures should start by taking a good, hard look at your network monitoring capabilities.

Subscribe to our Newsletter

Get the latest from ExtraHop delivered straight to your inbox.