Re: [Anima] ANIMA when there is a system-wide issue

Michael Richardson <mcr+ietf@sandelman.ca> Thu, 28 January 2021 20:35 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Toerless Eckert <tte@cs.fau.de>, Anima WG <anima@ietf.org>
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Date: Thu, 28 Jan 2021 15:35:07 -0500
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Subject: Re: [Anima] ANIMA when there is a system-wide issue
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Toerless Eckert <tte@cs.fau.de> wrote:
    > The google incident is exactly solved by ACP: The ACP is absent of any
    > configuration. Therefore also absent of any misconfiguration.

    > The magic of resilience lies in the correct layering. In the best of
    > implementation designs, the whole ACP implementation on a node is
    > running on resources that nobody can misconfigure and any user traffic
    > and contrl plane configuration does not touch it.

Right, so in keeping this thought, is the WG interested in designing a
way to interact with L2 switches?
In my experience, 90% of mis-configuration issues are due to L2 switch
issues.
(I think that it's because there is no "traceroute" or "ping" which
works at L2, and so it's really hard to diagnose/determine if one did the
right thing.)

My current idea is to attempt to prototype this in DPDK, but not really any
point if nobody cares about this.


Name:		draft-richardson-anima-l2-friendly-acp

was about to expire, so I have reposted it.

Html:           https://www.ietf.org/archive/id/draft-richardson-anima-l2-friendly-acp-01.html
Diff:           https://www.ietf.org/rfcdiff?url2=draft-richardson-anima-l2-friendly-acp-01

Abstract:
   This document details the challenges with building an Autonomic
   Control Plane on Campus/Enterprise networks which are built out of
   layer-two (Ethernet) switched technologies.

   This document does not propose a specific solution as yet, but
   details a number of possibilities, and what it would take to
   standardize each possibility.





--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide