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Re: [ippm] Lars Eggert's Discuss on draft-ietf-ippm-ioam-data-12: (with DISCUSS and COMMENT)

"Frank Brockners (fbrockne)" <fbrockne@cisco.com> Mon, 12 April 2021 17:56 UTC

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From: "Frank Brockners (fbrockne)" <fbrockne@cisco.com>
To: Lars Eggert <lars@eggert.org>
CC: The IESG <iesg@ietf.org>, "draft-ietf-ippm-ioam-data@ietf.org" <draft-ietf-ippm-ioam-data@ietf.org>, "ippm-chairs@ietf.org" <ippm-chairs@ietf.org>, "ippm@ietf.org" <ippm@ietf.org>, Al Morton <acm@research.att.com>
Thread-Topic: Lars Eggert's Discuss on draft-ietf-ippm-ioam-data-12: (with DISCUSS and COMMENT)
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Date: Mon, 12 Apr 2021 17:56:44 +0000
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Subject: Re: [ippm] Lars Eggert's Discuss on draft-ietf-ippm-ioam-data-12: (with DISCUSS and COMMENT)
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Hi Lars,

> -----Original Message-----
> From: Lars Eggert <lars@eggert.org>
> Sent: Montag, 12. April 2021 19:38
> To: Frank Brockners (fbrockne) <fbrockne@cisco.com>
> Cc: The IESG <iesg@ietf.org>; draft-ietf-ippm-ioam-data@ietf.org; ippm-
> chairs@ietf.org; ippm@ietf.org; Al Morton <acm@research.att.com>
> Subject: Re: Lars Eggert's Discuss on draft-ietf-ippm-ioam-data-12: (with
> DISCUSS and COMMENT)
> 
> Hi,
> 
> On 2021-4-12, at 19:58, Frank Brockners (fbrockne) <fbrockne@cisco.com>
> wrote:
> > ... FB: Perhaps a picture can help - see attached. The example shows a 5 node
> setup:
> 
> <snip>
> 
> thanks, that example was VERY helpful. Stressing in the document that because
> encap and decap nodes MUST be able to support both option types, it is
> sufficient if transit nodes only support one such type, assuming that the
> controller/collector can integrate both sets of data, would address my DISCUSS.

...FB: Thanks much. We'll add appropriate text to the next revision.

Cheers, Frank
> 
> > ...FB: Agree that we'd need to add a statement that encap/decap nodes
> SHOULD be able to insert/remove both trace Option-Types, because on
> encap/decap the effort between forwarders is comparable.
> > Per my note above, there is no need for the decap node to do any type of
> consolidation. It would just strip the different option types, and there could be
> additional ones, like POT or E2E Option-Types and ship the information to some
> controller/management station for further processing.
> 
> Right - the controller would be the entity to do the integration.
> 
> (Remainder of the email was about comments, which are not blocking and your
> resolutions seem fine.)
> 
> Thanks,
> Lars

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