Kentik - Network Flow Analytics

Posts by Avi Freedman

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About Avi Freedman

Avi is the co-founder and CEO of Kentik. He has decades of experience as a leading technologist and executive in networking. He was with Akamai for over a decade, as VP Network Infrastructure and then Chief Network Scientist. Prior to that, Avi started Philadelphia’s first ISP (netaxs) in 1992, later running the network at AboveNet and serving as CTO for ServerCentral.

Cisco’s Acquisition of AppDynamics

February 6, 2017

Cisco’s late-January acquisition of AppDynamics confirms what was already evident from Kentik’s experience in 2016, which is that effective visibility is now recognized industry-wide as a critical requirement for success. AppDynamics provides APM, the full value of which can’t be realized without the modern NPM offered by Kentik Detect. In this post we look at how Kentik uniquely complements APM to provide a comprehensive visibility solution.

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Kentik CEO Avi Freedman with PacketPushers on NPM & DDoS

December 19, 2016

Avi Freedman recently spoke with Ethan Banks and Greg Ferro of PacketPushers about Kentik’s latest updates, which focus primarily on features that enhance network performance monitoring and DDoS protection. This post includes excerpts from that conversation as well as a link to the full podcast. Avi discusses his vision of appliance-free network monitoring, explains how host monitoring expands Kentik’s functionality, and gives an overview of how we detect and respond to anomalies and attacks.

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PacketPushers: Flight from the Public Cloud?

August 8, 2016

Kentik CEO Avi Freedman joins Ethan Banks and Chris Wahl of the PacketPushers Datanauts podcast to discuss hot topics in networking today. The conversation covers the trend toward in-house infrastructure among enterprises that generate revenue from their IP traffic, the pluses and minuses of OpenStack deployments for digital enterprises, and the impact of DevOps practices on network operations.

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BGP Routing Tutorial Series: Part 3

August 1, 2016

In this post we continue our look at BGP — the protocol used to route traffic across the interconnected Autonomous Systems (AS) that make up the Internet — by clarifying the difference between eBGP and iBGP and then starting to dig into the basics of actual BGP configuration. We’ll see how to establish peering connections with neighbors and to return a list of current sessions with useful information about each.

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BGP Routing Tutorial Series: Part 2

July 25, 2016

BGP is the protocol used to route traffic across the interconnected Autonomous Systems (AS) that make up the Internet, making effective BGP configuration an important part of controlling your network’s destiny. In this post we build on the basics covered in Part 1, covering additional concepts, looking at when the use of BGP is called for, and digging deeper into how BGP can help — or, if misconfigured, hinder — the efficient delivery of traffic to its destination.

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Welcoming Cisco to the 2016 Analytics Party

July 5, 2016

Cisco’s announcement of Tetration Analytics means that IT and network leaders can no longer ignore the need for Big Data intelligence. In this post, Kentik CEO Avi Freedman explains how that’s good for Kentik, which has been pushing hard for this particular industry transition. Cisco’s appliance-based approach is distinct from the SaaS option that most customers choose for Kentik Detect, but Tetration’s focus on Big Data analytics provides important validation that Kentik is on the right track.

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NetFlow, sFlow, and Flow Extensibility, Part 2

April 18, 2016

NetFlow and IPFIX use templates to extend the range of data types that can be represented in flow records. sFlow addresses some of the downsides of templating, but in so doing takes away the flexibility that templating allows. In this post we look at the pros and cons of sFlow, and consider what the characteristics might be of a solution can support templating without the shortcomings of current template-based protocols.

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NetFlow, sFlow, and Flow Extensibility, Part 1

March 28, 2016

NetFlow and its variants like IPFIX and sFlow seem similar overall, but beneath the surface there are significant differences in the way the protocols are structured, how they operate, and the types of information they can provide. In this series we’ll look at the advantages and disadvantages of each, and see what clues we can uncover about where the future of flow protocols might lead.

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BGP Routing Tutorial Series: Part 1

February 8, 2016

Border Gateway Protocol (BGP) is a policy-based routing protocol that has long been an established part of the Internet infrastructure. Understanding BGP helps explain Internet interconnectivity and is key to controlling your own destiny on the Internet. With this post we kick off an occasional series explaining who can benefit from using BGP, how it’s used, and the ins and outs of BGP configuration.

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