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Oxide and Friends Twitter Space: November 29th, 2021

The Sidecar Switch

We've been holding a Twitter Space weekly on Mondays at 5p for about an hour. Even though it's not (yet?) a feature of Twitter Spaces, we have been recording them all; here is the recording for our Twitter Space for November 29th, 2021.

In addition to Bryan Cantrill and Adam Leventhal, our special guest was Arjen Roodselaar; other speakers on November 29th included Rick Altherr, Simeon Miteff, MattSci, Jason Ozolins, Thomas and Edwin Peer. (Did we miss your name and/or get it wrong? Drop a PR!)

Some of the topics we hit on, in the order that we hit them:

  • @3:04 Arjen's announcement about the rack switch
  • Cadence Allegro PCB editor
  • @11:35 Should we do our own switch?
    • "We're just going to tweak existing designs..."
  • Intel Tofino 2 page
    • Barefoot Networks wiki
    • P4 language wiki
  • @24:07 What makes this chip a beast?
  • @33:24 Cable backplane, sleds
  • @37:11 Sidecar
  • @38:52 Management network (out of band)
    • NC-SI network controller sideband interface wiki

    Rick: A lot of the BMC style management functionality just kinda got tacked on to PC systems.

  • @48:36 SDN software-defined networking wiki
    • NCI National Computational Infrastructure (Australia) wiki
    • Network function virtualization wiki
  • @55:12 The tofino simulator
  • @59:51 Trust model, root of trust, service processor
  • @1:02:31 Can the switch run independent of the PCIe host?
  • @1:08:35 The journey. The time scale of these signaling components. Heat sinks and practice boards
  • Happy Hanukkah!

If we got something wrong or missed something, please file a PR! Our next Twitter space will likely be on Monday at 5p Pacific Time; stay tuned to our Twitter feeds for details. We'd love to have you join us, as we always love to hear from new speakers!