Gartner Blog Network

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

Just Say No to Phone Bloat

by Andrew Lerner  |  June 8, 2018

Note: This is a guest blog by Katja Ruud Enterprises often offer employees a large set of voice applications and services such as a fixed phone, a mobile phone, unified communication service, a workstream collaboration solution, a meeting solution and so on. We’ve all witnessed this when someone really wants to get ahold of you […]

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Cool Networking Vendors – 2018 Edition

by Andrew Lerner  |  May 8, 2018

We just published our 2018 Cool Vendors in Enterprise Networking research. This year, my colleague Bill Menezes led the document (perhaps I wasn’t cool enough…) and these vendors solve networking challenges in new and innovative ways. In the document, we recommend investing in products for improving network agility outside of the hardware refresh cycle. In other words, […]

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Missed Opportunities for Network Innovation

by Andrew Lerner  |  April 30, 2018

Network vendors love to talk about innovation. In fact, so much so, that innovation now means everything and nothing at the same time.  As we’ve published: network vendors overhype even minor incremental feature enhancements as “innovative,” to create the perception that they’re delivering innovation into the market Today, much of the network innovation hype centers […]

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Network Culture Hacks

by Andrew Lerner  |  March 26, 2018

We’ve written about the need for culture change in networking several times, including: A strong aversion to risk and desire for perceived “safe” incremental changes, leading to the accrual technical debt Enterprise networks aren’t agile which results in an ever-widening gap between business needs and network capabilities We’ve also written about how to start to […]

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Networking Needs a Chaos Monkey

by Andrew Lerner  |  March 9, 2018

It’s time, the networking industry needs a Chaos Monkey. If you’re not familiar with the concept, Netflix created the Chaos Monkey to intentionally introduce failures, such as disabling virtual machines (VMs) in their infrastructure, in order to proactively identify issues. We’ve previously written about this a few times including here, however to date there is no readily […]

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Transformation or Just an Incremental Improvement?

by Andrew Lerner  |  March 2, 2018

There are certain terms in networking that are widely over-used, we’ve all heard them: transformation, innovation, software-defined, dynamic, integrated, zero touch provisioning (if you have to physically install something, by definition, isn’t that touch?)… In many regards these terms mean nothing (but also everything at the same time). In fact, I have a half-written blog […]

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Look Beyond Network Vendors for Network Innovation

by Andrew Lerner  |  February 6, 2018

If you are responsible for an enterprise network, then you probably know there is a lot of manual CLI-based operations occurring. Not surprisingly, the top networking challenge our clients face is improving agility, and this has remained true over the past couple years. So why is this the case?  Other disciplines in IT have evolved […]

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Networking Devices and Spectre/Meltdown

by Andrew Lerner  |  January 16, 2018

Spectre and Meltdown are security vulnerabilities that impact all modern microprocessor vendors and most computing devices. Many enterprise IT teams are running around like crazy trying to get a handle on impact. So far, most of the early talk about these vulnerabilities has been focused on servers and cloud providers. However, these vulnerabilities impact networking products, […]

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Checking in on the Death of the CLI

by Andrew Lerner  |  January 4, 2018

Every year around this time, a ton of pundits make predictions. Some of them are good, some funny, while others… not so much. I’m not a huge predictions guy, but recognize there is solid value in making them. Gartner does publish official predictions across multiple technology areas (including networking) every year. However, the point today is […]

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Pragmatic Data Center Networking

by Andrew Lerner  |  December 20, 2017

Building and operating an enterprise data center network is not easy, and I’ve done it. It requires experience, attention to detail, collaboration, and a little luck. Further, data center networking investments are expensive and long-term by default, so poor design/implementation/vendor choices are very difficult to rectify. Along these lines, we’ve just published pragmatic research that […]

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