What will 2017 mean for SD-WANs?
What will 2017 mean for SD-WANs?
/ Jan 16, 2017 0 COMMENTS

In 2016 SD-WANs were the hottest topic in networking. That raises an obvious question that I will use the next two blogs to try to answer. That question is: What changes can we expect to see relative to SD-WAN adoption in 2017? The multi-year SD-WAN adoption model It is somewhat common in our industry to…

Does SD-WAN Mean the End of WAN Optimization?
Does SD-WAN Mean the End of WAN Optimization?
/ Nov 16, 2016 0 COMMENTS

Over the last 18 months one of the hottest topics in IT has been software defined WANs (SD-WANs). One of the advantages of SD-WANs is that they enable companies to leverage relatively inexpensive Internet bandwidth. There is no doubt that having additional bandwidth eliminates some performance problems. However, network organizations that are analyzing SD-WAN solutions…

What’s the Business Case for Deploying SD-WAN?
What’s the Business Case for Deploying SD-WAN?
/ Sep 19, 2016 0 COMMENTS

We have been discussing Software-Defined WANs (SD-WANs) for about eighteen months. As is the case with any new approach to networking, the initial focus of that discussion was on basic topics such as what is meant by the phrase SD-WAN.  As we get closer to the time when a lot of companies will start to…

What’s Inhibiting SD-WAN Adoption?
What’s Inhibiting SD-WAN Adoption?
/ Jan 18, 2016 0 COMMENTS

Everybody in IT is aware of the hype cycle that surrounds the introduction of new technologies and architectures such as a Software-Defined WAN (SD-WAN). There are two key factors that drive that hype cycle. One of the factors, having unrealistic expectations of the benefits of a SD-WAN, was the subject of my last blog. In…

What are the Benefits & Drivers of SD-WAN Adoption?
What are the Benefits & Drivers of SD-WAN Adoption?
/ Jan 5, 2016 0 COMMENTS

There is a tendency in our industry to associate emerging technologies such as Software Defined WANs (SD-WANs) with a very broad, and often unrealistic set of benefits. This tendency tends to add to the hype that surrounds new technologies and it makes it difficult for network organizations to accurately evaluate the viability of adopting these…

Is Your Network Paying the Price for Internet Backhaul?
Is Your Network Paying the Price for Internet Backhaul?
/ Dec 18, 2015 0 COMMENTS

In the traditional approach to branch office networking, organizations backhauled their Internet traffic to one or more of their data centers. The advantage of backhauling is that it gives network organizations the ability to secure this traffic relatively easily. The disadvantages of this approach are that it adds delay and cost. These disadvantages are clearly…

What’s Holding Back SD-WAN Adoption?
What’s Holding Back SD-WAN Adoption?
/ Nov 24, 2015 0 COMMENTS

The emergence of a fundamentally new technology or an approach to implementing technology is typically followed by a spate of articles that describe the use cases for that technology or approach. We have certainly seen that over the last year or two with software defined WANs (SD-WANs). Identifying the use cases is important, but use…

Is 2016 the year of the SD-WAN?
Is 2016 the year of the SD-WAN?
/ Nov 9, 2015 0 COMMENTS

A year ago we seldom if ever heard the phrase software-defined WAN (SD-WAN). Now we are continually inundated by articles that discuss SD-WANs and their value proposition. While it is always interesting to hear what industry analysts and press think about a new technology or architecture, I think it is more interesting to hear the…

What’s Up with the ONF?
What’s Up with the ONF?
/ Sep 29, 2015 0 COMMENTS

The Open Networking Foundation (ONF) is the organization that is most closely associated with the development and standardization of SDN. As of September 2015, the ONF had over 140 members. Given its size and its tight association with SDN, in order to understand where we are with the evolution of SDN we have to be…

So Which Is It:  NFV or NSV?
So Which Is It: NFV or NSV?
/ Sep 17, 2015 0 COMMENTS

Because I am sensitive to the fact that I am a recovering academic I am hesitant to get drawn into any “How many angels can dance on the head of a needle”-type discussions. Recently, however, I have found myself being drawn into discussions with people who associate NFV (Network Functions Virtualization) strictly with service providers….