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PODCAST

OVS Orbit

Interviews and topics of interest to Open vSwitch developers and users, published twice a month, hosted and produced by Ben Pfaff.

technology software how-to

All Episodes

00:34:12

Sneak Preview: VMware Research High Bits, with Lalith...

OVS Orbit ·

2021/07/16

VMware Research High Bits is a podcast coming soon from VMware's research group. This episode is a sneak preview of episode 1, with Lalith Suresh. Lalith is a researcher in the VMware Research Group who specializes in measurement, design, and implementation of large-scale networked and distributed systems. Last year, Lalith published a blog entry with advice on how to build software systems for research, and then he followed up with a video with

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00:14:14

The Systems Approach, with Bruce Davie, Larry...

OVS Orbit ·

2021/04/01

Bruce Davie and Larry Peterson are the authors of the Systems Approach series of computer networking textbooks. Mark Twain has been called the greatest humorist the United States has produced and the father of American literature. This episode, the first collaboration among these celebrated authors, incorporates elements of the works of both [1, 2]. For more information on the Systems Approach series, visit systemsapproach.org or follow

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00:38:20

Computer Networks: A Systems Approach, with Bruce...

OVS Orbit ·

2021/03/16

Bruce Davie and Larry Peterson talk about their Systems Approach series of books on computer networking. These books began with the textbook Computer Networks: A Systems Approach, published in 1996. After publishing the fifth edition in 2011, they took their book "open source" by making the text freely available on Github under a Creative Common license. Now the original book is part of a series that also includes "micro-books"

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00:39:39

The OVSDB Query Optimizer and Key-Value Interface,...

OVS Orbit ·

2021/02/27

Dmitry Yusupov submitted a talk to the Open vSwitch 2020 Fall Conference that we weren't able to fit into the schedule. This podcast, recorded in December 2020, is based on the material that Dmitry presented in a video available on YouTube. The slides for Dmitry's talk are also available. The abstract for this talk is: OVSDB (management protocol RFC 7047) is a fundamental building block of modern SDN architecture

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00:43:23

Network Service Mesh, with Frederick Kautz and...

OVS Orbit ·

2019/09/01

Frederick Kautz and Nikolay Nikolaev are developers on the Network Service Mesh project, which provides additional networking features for Kubernetes above what is available from Kubernetes CNI networking implementations. OVS Orbit is produced by Ben Pfaff. The intro music in this episode is Drive, featuring cdk and DarrylJ, copyright 2013, 2016 by Alex. The bumper music is Yeah Ant featuring Wired Ant and Javolenus, copyright 2013

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00:39:07

Long-Term Network Latency, with Nick Buraglio from ESnet

OVS Orbit ·

2019/07/25

Nick Buraglio works in research and education and service provider networking, currently at ESnet, the US Department of Energy's science network, which links sites in the United States and western Europe. In this podcast, he talks about the role of latency monitoring in managing a network. Nick defines the latency that he's talking about: "When most people think of latency, they think of a ping round-trip time. That's

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00:50:06

User-Configurable Protocol Support for OVS, or Why...

OVS Orbit ·

2019/06/03

There are several challenges toward making it easy for users to add support for new protocols in OVS or, equivalently, adding P4 support to OVS. This talk, given at the Dagstuhl seminar on programmable data planes in April 2019, explains the reasons that OVS doesn't already have these features, what's changing, and likely future directions. The talk includes considerable discussion with the audience. An early statement summarizes the

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01:05:32

The Faucet Controller at SC18, with Brad Cowie and...

OVS Orbit ·

2019/05/01

Brad Cowie and Richard Sanger are members of the WAND Network Research Group at the University of Waikato, in Hamilton, New Zealand. They are both associated with the Faucet project, which develops an open source OpenFlow controller for enterprise networks. The first part of this talk is an introduction to Faucet. The second part talks about how Faucet became involved in SCinet at SC18, the supercomputing conference held annually in

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00:42:09

The Discrepancy of the Megaflow Cache in OVS, with...

OVS Orbit ·

2019/04/01

Levente Csikor and Gabor Retvari from the Budapest University of Technology and Economics present their talk “The Discrepancy of the Megaflow Cache in OVS” at the Open vSwitch Fall Conference in San Jose in December 2018. A few days later, they visited me to have this discussion for the podcast about their work. This episode is a discussion of their work and their results. For a synopsis of Levente and Gabor's work, please visit the OVS

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00:31:49

OVS Hardware Offload, with Simon Horman from Netronome

OVS Orbit ·

2019/03/01

Simon Horman has been an Open vSwitch contributor and committer since 2010. He currently works for Netronome, where his Open vSwitch work centers around hardware offload using the "tc" API integrated into the Linux kernel. This API allows users of Open vSwitch to transparently obtain better performance: when offload is enabled with a compatible network card, Open vSwitch works the same way, but faster. The conversation includes:

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00:54:00

Encrypting OVN Tunnels with IPsec, with Qiuyu Xiao...

OVS Orbit ·

2019/02/01

Qiuyu Xiao is a Ph.D. student in the department of computer science at the University of North Carolina at Chapel Hill. During the summer of 2018, he was an intern in the Open vSwitch team at VMware. This episode is a talk that Qiuyu gave at the end of his internship, describing his work on encrypted tunnels for OVN. The slides that accompanied the talk are available. To learn more about Qiuyu's work, visit his website, or contact him via

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00:54:12

Introduction to OVSDB, Part 2

OVS Orbit ·

2019/01/01

This episode, recorded in April 2018, was the third in a series of internal VMware tech talks about Open vSwitch. This episode is particularly about OVSDB, the Open vSwitch Database, and particularly about OVSDB from the viewpoint of the client. It talks about the C client library, including how it represents data, the usual way to work with it, and how it interacts with the OVSDB server. It also covers how the C client library supports preparing

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00:40:55

Personalized Pseudonyms for Servers in the Cloud,...

OVS Orbit ·

2018/08/29

Qiuyu Xiao is a PhD student studying computer science at the University of North Carolina at Chapel Hill. This episode is a talk that Qiuyu gave at VMware in May. It is based on the paper “Personalized Pseudonyms for Servers in the Cloud,” by Qiuyu Xiao, Michael K. Reiter, and Yinqian Zhangyinqian, originally published in 2017 at Proceedings on Privacy Enhancing Technologies. You may wish to follow along with Qiuyu's slides.

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00:25:11

Generic Linux Debugging, with Ansis Atteka from VMware

OVS Orbit ·

2018/08/29

Ansis Atteka is a developer on the Open vSwitch team at VMware. This episode is a recording of a talk that Ansis gave at VMware in May. He covers techniques for debugging on Linux, in particular how to trace through processes using strace, trace-cmd, and other tools. You may want to follow along with Ansis's slides. You can contact Ansis at aatteka@ovn.org. OVS Orbit is produced by Ben Pfaff. The intro

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00:39:57

Networking with OVS at DigitalOcean, with Matt Layher...

OVS Orbit ·

2018/08/18

Matt Layher and Armando Migliaccio are engineers focusing on networking at DigitalOcean, a cloud service provider. In April, Justin Pettit and I sat down with them at DigitalOcean HQ in New York City. This episode is our discussion, which ranges from how DO first began using Open vSwitch, the DO approach to network control, to scale and performance issues, upgrade strategy, and the Open vSwitch code that DigitalOcean itself is working to

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00:23:22

Oko: Extending Open vSwitch with Stateful Filters,...

OVS Orbit ·

2018/08/17

Paul Chaignon is a grad student at Orange and Inria. In this episode, Paul talks about Oko: Extending Open vSwitch with Stateful Filters, a paper written with co-authors Kahina Lazri, Jérôme François, Thibault Delmas, and Olivier Festor. Paul presented this research at SOSR '18 in March 2018. The paper has the following abstract: With the Software-Defined Networking paradigm, software switches emerged as the new edge of

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00:28:25

Incremental Processing with ovn-controller, with Han...

OVS Orbit ·

2018/05/23

Han Zhou is an architect working on highly scalable and reliable SDN solutions for eBay's cloud infrastructure. He is an active contributor in OpenStack and OVS/OVN. Before eBay, he has been working in networking area for more than 10 years in Cisco and Nokia. In OVN, the ovn-controller daemon runs on each hypervisor. It obtains logical flows from the OVN southbound database, transforms them into "physical flows," and pushes the

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00:33:09

Toward Leaner, Faster ovn-northd, with Leonid Ryzhyk...

OVS Orbit ·

2018/05/22

Leonid Ryzhyk is a senior researcher in the VMware Research Group. The main theme of his work is applying formal methods to build better operating systems and networks. Before joining VMware, Leonid received his PhD from University of New South Wales and NICTA. Leonid has also worked as a researcher at NICTA, as a postdoc at University of Toronto and at Carnegie Mellon University, and as a researcher at Samsung Research America. In

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00:50:34

OpenFaaS, with Alex Ellis from VMware

OVS Orbit ·

2018/05/17

Alex Ellis founded and leads the OpenFaaS project, which is an open source implementation of a serverless framework. This episode is an interview with Alex. We talk about serverless functions and OpenFaaS, how OpenFaaS compares to other serverless frameworks, how networking works in OpenFaaS, open source communities, and other related topics. We also take on a couple of questions asked by listeners on Twitter. For more information

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00:52:23

Flow Translation

OVS Orbit ·

2018/04/29

This is the third in a series of Open vSwitch tech talks that we are starting to run internally at VMware every week or two. This episode is about flow translation, the process that OVS follows when a packet arrives in the software switch that does not match any already established entry in the OVS datapath cache (the megaflow cache). The translation process has two goals. First, it figures out what to do with the particular packet being

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75 results

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