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Title: The TCP Incast problem: the opposite of Buffer Bloat: what happens when ethernet switches don't have enough buffering?
Speaker: Lincoln Dale, Principle Engineer, Arista Networks
Date: 11:30am, 23rd Feb 2012
Venue: EN101, Ground Floor, EN Building
Abstract: The impact of too much buffering on access/last-mile devices and the resulting 'bufferbloat' is now a well understood problem and is being addressed. But what about if there is insufficient buffering? What happens to throughput?

This talk explores exactly how much buffer is enough & too much and the characteristics of TCP flows that drive network device buffer size dimensioning in different directions. The underlying data for the talk has been gathered from production data at various networks and is backed up by simulations within NS3 network simulation tool.

Biography: Lincoln Dale is a Principle Engineer within Arista Networks, responsible for product definition and development priorities of Arista’s next generation products and EOS software.

Prior to joining Arista in 2011, Lincoln spent 14 years at Cisco Systems where most recently he was Distinguished Engineer working on silicon, systems and software strategy for Cisco's Nexus and Catalyst ethernet switching portfolio. Before this he was a Distinguished Technical Marketing Engineer focused on Cisco's flagship Nexus 7000 ethernet switch and NX-OS software. Prior to this he was involved in SAN switching with Cisco's entry in the Fibre Channel switching market with MDS 9000 (Andiamo Systems) and worked on web scaling, caching, L4-7 services and streaming media as part of Cisco's Content Networking portfolio.

A resident of Australia, Lincoln holds a Bachelor of Commerce from Curtin University.

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