OVS Orbit Ben Pfaff

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 more
details. This episode interviews Lalith to learn more about his approach
to building research systems.




To learn more about Lalith's work, visit his VMware
Research webpage or his personal blog Comfortably Geek, where you can also find
his contact information.




VMware Research High Bits is produced by Ben Pfaff. The bumper sound in this
episode is Ben biting into an apple.

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
the series on substack as systemsapproach or
Twitter as and @SystemsAppr. On Twitter, you
can find Bruce as @_drbruced,
Larry as @_llpete, and Mark as
@MarkTwain.




Bruce and Larry were previously featured in Episode
73: Computer Networks: A Systems Approach.




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 outro music
is Space
Bazooka featuring Doxen Zsigmond, copyright 2013 by Kirkoid.
Fanfares et Simphonies by Jean-Joseph Mouret, performed by Jean-Marie
Leclair, dir. Jean-François Paillard, downloaded via imslp.org,
is licensed under Creative
Commons Zero 1.0 - Non-PD US. The scratch sound effect by Stumber
was downloaded via freesound.org
and licensed under Creative Common
Attribution 3.0 Unported (CC BY 3.0). The episode as a whole is
licensed as Creative Commons Attribution 3.0
Unported (CC BY 3.0).

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" on SDN and 5G, with
more books in preparation. In this episode, Bruce and Larry talk about
their motivations and future plans, including trying to rope your host
into writing a book on Open vSwitch.




For more information on the series, visit systemsapproach.org or follow
the series on substack as systemsapproach or
Twitter as and @SystemsAppr. You can find
Bruce on Twitter as @_drbruced and Larry as @_llpete.




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 by Speck. The outro
music is Space
Bazooka featuring Doxen Zsigmond, copyright 2013 by Kirkoid. All
content is licensed under a Creative Commons Attribution 3.0
Unported (CC BY 3.0) license.

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 based on OVN/OVS. OVSDB is the key component
that is responsible for efficient scalability of large deployments,
such as 1000+ node Kubernetes clusters when CNI function is OVN based.




OVSDB was originally designed to store configuration for Open vSwitch
daemon, however, it was later extended to be part of OVN architecture,
with added RAFT clustering support and improved scale-out capabilities,
such as efficient scale-out caches.




This talk brings a question of scaling up OVSDB with introduction of
OVSDB Query Optimizer using primary and alternate key indexing. We
will be also looking at OVSDB with Query Optimizer as high-performance
Key-Value API interface and compare it to ETCD.





You can contact Dmitry as @dmitryy on Twitter, or via email
at dyusupov@nvidia.com.




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 by Speck. The outro
music is Space
Bazooka featuring Doxen Zsigmond, copyright 2013 by Kirkoid. All
content is licensed under a Creative Commons Attribution 3.0
Unported (CC BY 3.0) license.

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 by Speck. The outro
music is Space
Bazooka featuring Doxen Zsigmond, copyright 2013 by Kirkoid. All
content is licensed under a Creative Commons Attribution 3.0
Unported (CC BY 3.0) license.

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 one useful data point, but we're talking about very low tolerance
and high accuracy latency. You have to have a cellular or GPS clock and
a very strong clock source in the system to be able to track it at this
level. We use that as a very important part of how we manage our
network. That's really what I'm talking about when I talk about
latency."



Nick discusses the perfSONAR
software for monitoring latency over time and for investigating problems
as they occur.




Some basic live monitoring charts and graphs for ESnet are online at MyESnet.




You can contact Nick on Twitter as @forwardingplane or visit
his blog at forwardingplane.net.




Other episodes of OVS Orbit related to monitoring include Episode 46: In-band Network Telemetry and Episode 6: sFlow.




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 by Speck. The outro
music is Space
Bazooka featuring Doxen Zsigmond, copyright 2013 by Kirkoid. All
content is licensed under a Creative Commons Attribution 3.0
Unported (CC BY 3.0) license.