Long-Term Network Latency, with Nick Buraglio from ESnet

OVS Orbit

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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.

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