ONS 2015: Amin Vahdat on datacenter networks with 5 Pbps cross-sectionalbandwidth

Explains some lessons learned and the result of a number of years of research in virtualizing switching in their datacenters.

  • We arrange our network around a Clos topology, a network configuration where a collection of smaller (cheaper) switches are arranged to provide the properties of a much larger logical switch.
  • We use a centralized software control stack to manage thousands of switches within the data center, making them effectively act as one large fabric.
  • We build our own software and hardware using silicon from vendors, relying less on standard Internet protocols and more on custom protocols tailored to the data center.

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