Greg Bryan

Greg is a Senior Manager, Enterprise Research at TeleGeography where he leads our enterprise pricing research. Greg is also the chair of the WAN Summit conference series.

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Recent Posts

Schrodinger's MPLS and Why Predicting the Future is Hard

Predicting the future is hard, especially when it comes to complex markets with disruptive variables that are difficult/impossible to model. In his excellent book Thinking Fast and Slow, Nobel winner Daniel Kahneman provides stark examples of how bad humans can be at doing just that. 

In this excerpt, Kahneman details how he tracked the performance records of 25 professional wealth managers across eight years. He found that “[t]he results resembled what you would expect from a dice-rolling contest, not a game of skill.”

On TEMs: You Can't Benchmark Your Network if You Don't Understand What You're Buying

Let's talk about telecom expense management, better known as TEM.

TEMs are designed to make untangling telecom investments a little easier. For larger organizations with bigger telecom bills, this can be huge for streamlining costs and saving dollars. (More on that here.)

But why bring up TEMs? Why do we think WAN managers might be interested?

COVID-19 and the Impact of Remote Work on WAN Managers

At this point, the spread of COVID-19 seems inevitable in much of the world. Working from home, if possible, is more than just a good idea. It’s a mandate from employers and governments around the globe. 

While many folks are considering the social and business implications of a potentially permanent increase in remote workers, at TeleGeography we’re of course thinking about what this means for WAN and IT infrastructure managers worldwide.

SD-WAN Management Costs, Wargamed

In house or outsourced? This is an age-old question for many firms. 

WAN Wargaming: What Happens When You Leave MPLS Behind?

Welcome back to our blog series on “wargaming” WAN configurations to see how product choice can affect site bandwidth and total WAN costs. If you’re just joining us, it’s probably worth going back to the beginning

When we last left off, my colleague Elizabeth Thorne covered minimizing MPLS down to the core offices. The next couple of entries, however, are going to focus on the radicals. Yes, the daring folks who decide to leave behind MPLS and go full internet.

Adding SD-WAN, Keeping MPLS

My wife has a brutal Northern Virginia commute; she drives about 80 miles a day. Recently, we decided it was time for a new car for her.

Wargaming Your WAN: MPLS-Broadband Edition

Hello and welcome to the third entry in our series about wargaming WAN configuration scenarios. We’ve made it to the MPLS-broadband edition!

Before we continue: if you haven’t read the previous entries where I introduce our hypothetical WAN and then add local internet breakouts with DIA, it probably makes sense to do that before you dive into this one. (This scenario mirrors our last, but replaces DIA with ISP-sourced business broadband.)

Adopting Local Internet Breakouts in an MPLS-DIA Hybrid WAN

Welcome to the second entry in this series on “wargaming” WAN scenarios to make sure you’re getting the most bandwidth bang for your buck. 

If you didn’t read the set-up to the series, please go back and check that out. This will all make a lot more sense if you do.

The first actual scenario we’re going to tackle is adopting local internet breakouts in an MPLS-DIA hybrid WAN. Let’s dive in.

Why Should You Model WAN Costs? Our New Blog Series Will Show You.

I recently finished Seveneves by science fiction author and telecom enthusiast Neal Stephenson.

This book tells the story of near-future humanity struggling to survive after the moon explodes and threatens to end all life on Earth. The scientific and military elite game out their way forward, running models to identify scenarios with the highest probability of survival.

This brings me to wide area networking.

Picking Your Provider: How Carrier Selection Affects Your WAN Costs

My grandfather told stories about his days as a milkman in the 50s. To a kid growing up 30 years later, the concept seemed pretty weird. Why would someone drive to your house with your milk instead of you picking it up at the grocery store with the other food?