January 16, 2019

SD WAN’s impact on network monitoring

SD WAN providers claim that application performance can improve by up to forty times when migrated to SD WAN technologies…  That’s a phenomenal statistic! But how true is it? How did this number roll up to the marketing department to lure you into clicking the “Subscribe to SD-WAN” button?

Strategy guru Peter Drucker once said: “If you cannot measure it, you cannot improve it.” So these claims imply there being some form of measurement to back up the statistic. This also means that the initial concern is having the visibility to actually measure performance, before being able to improve on it.

Recently at the Interop ITX in Las Vegas, one of the breakfast briefings was hosted by the IDC. The topic was “Intelligent Automation of Networks” and, more specifically, the rise of “intent based networking.”

IDC claim that network visibility is critical for all companies looking to digitally transform or improve their cloud architecture deployment. Those facing pressure to support a massively complex infrastructure should start by taking a good, hard look at their network monitoring capabilities.

It’s not just about monitoring a massively complex infrastructure to ensure a better user experience, but also to baseline the current user experience to ensure that user experience actually does improve. Migration for the sake of trying to resolve user perceived problems may not yield the desired user satisfaction, increased productivity or operational saving.

Many years ago, Sintrex was at the forefront of monitoring client experience while enterprises were migrating from private WANs to service provider MPLS networks. It was essential to baseline existing service levels so that new service levels could be compared. It’s not much different now. To retain control, organisations need to retain visibility.

A couple of other predictions made by the IDC 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.

Sintrex Executive, Ludwig Myburgh asserts that “from a Sintrex perspective SD Networks do not have a major impact on our monitoring paradigm. Devices will still have IP addresses, with management capabilities, interconnected via Subnets and perform similar networking services. “

“The configuration and changes applied dynamically to these devices is where there is a major change to the traditional WAN paradigm. To monitor, store, check for compliance, track changes etc. we see ourselves playing a major role. Vendors are exposing the information via API’s and particularly RESTful API’s.”

“This is where Sintrex will interconnect and collate information, store in the CMDB and bring into a consolidated warehouse to provide holistic IT intelligence.”

“From a Fault, Performance and Flow perspective there are no major changes as most of the information is still available via SNMP and NetFlow for the network based platforms and WMI for the Windows environment.”

This article was published in partnership with Sintrex.

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