Long-Term Network Latency, with Nick Buraglio from ESnet

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.