Long-Term Network Latency, with Nick Buraglio from ESnet - a podcast by Ben Pfaff

Nick Buraglio works in research and education and service provider
networking, currently atESnet, the US
Department of Energy's science network, which linkssites 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 toleranceand 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 thislevel. 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 aboutlatency."

Nick discusses theperfSONARsoftware for monitoring latency over time and for investigating problems
as they occur.

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

You can contact Nick on Twitter as@forwardingplaneor visit
his blog atforwardingplane.net.

Other episodes of OVS Orbit related to monitoring includeEpisode 46: In-band Network TelemetryandEpisode 6: sFlow.

OVS Orbit is produced byBen Pfaff. The
intro music in this episode isDrive,
featuring cdk and DarrylJ, copyright 2013, 2016 by Alex. The bumpermusic isYeah Antfeaturing Wired Ant and Javolenus, copyright 2013 by Speck. The outro
music isSpace
Bazookafeaturing Doxen Zsigmond, copyright 2013 by Kirkoid. All
content is licensed under a Creative CommonsAttribution 3.0
Unported (CC BY 3.0)license.

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