OVS Orbit

Protocol-Independent FIB Architecture, with Ryo Nakamura from University of Tokyo


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Ryo Nakamura is a PhD
student at The University of Tokyo, studying IP networking, overlay
networking, and network operation. This episode is a recording I made of
his talk during APSys 2016, the
Asia-Pacific Workshop on Systems, on Aug. 5, based on Protocol-Independent FIB
Architecture for Network Overlays, written with co-authors Yohei Kuga
(from Keio University), Yuji Sekiya, and Hiroshi Esaki.

The abstract for this paper says:

We introduce a new forwarding information base architecture into the
stacked layering model for network overlays. In recent data center
networks, network overlay built upon tunneling protocols becomes an
essential technology for virtualized environments. However, the tunneling
stacks network layers twice in the host OS, so that processing to
transmit packets increases and throughput will degrade. First, this paper
shows the measurement result of the degradation on a Linux kernel, in
which throughputs in 5 tunneling protocols degrade by over 30%. Then, we
describe the proposed architecture that enables the shortcut for the
second protocol processing for network overlays. In the evaluation with a
dummy interface and a modified Intel 10-Gbps NIC driver, transmitting
throughput is improved in 5 tunneling protocols and the throughput of the
Linux kernel is approximately doubled in particular protocols.

Before the talk, session chair Florin Dinu introduces the
speaker. Following the talk, the questions come from Ben Pfaff, Sorav Bansal, and
Florin, respectively. Sorav's question refers to my own talk from
earlier the same day at the conference, which is published as OVS Orbit Episode 14.

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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OVS OrbitBy Ben Pfaff

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