[Sidrops] draft-ymbk-sidrops-ov-signal-02.txt

Randy Bush <randy@psg.com> Mon, 28 January 2019 22:05 UTC

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Subject: [Sidrops] draft-ymbk-sidrops-ov-signal-02.txt
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i would like to put draft-ymbk-sidrops-ov-signal-02.txt on the agenda
for praha.  discussion so far:

  there was one red herring; outsourcing security.  as this was
  discussed in the draft, i can only assume actual reading helped.

  the substantial issues raised in the meeting (i found nothing in the
  mailing list archives) seems to be the signaling/transport.  let's
  focus on this.

these seem to be three general alternatives for signaling.

  in-band, as described in the draft, uses an extended community.
  alternatively it could use a new attribute or other hack.  such
  alternative in-band mechanisms could be discussed/investigated.
  a new afi/safi, which did not get rousing support from router
  implementors who would have to create and support a whole new afi/safi
  for the task.  of course, creative folk could undoubtedly find more
  things to do with the new afi/safi if they get bored with bgp-ls:)

  augment the rpki-rtr protocol to allow the router to signal back to
  the cache one or more invalid routes.  but then what happens with
  those data?  if the cache will signal those to router clients, then
  those router clients will have done the evaluation on their own.

these are the thoughts which led us to in-band signaling.  but this is
certainly worth discussing, here, praha, or both.