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[Idr] Re: draft-decraene-idr-nlri-error-handling-00.txt

John Scudder <jgs@juniper.net> Fri, 17 October 2025 19:40 UTC

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From: John Scudder <jgs@juniper.net>
To: Robert Raszuk <robert@raszuk.net>
Thread-Topic: [Idr] draft-decraene-idr-nlri-error-handling-00.txt
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CC: "bruno.decraene@orange.com" <bruno.decraene@orange.com>, idr <idr@ietf.org>, "draft-decraene-idr-nlri-error-handling@ietf.org" <draft-decraene-idr-nlri-error-handling@ietf.org>
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Subject: [Idr] Re: draft-decraene-idr-nlri-error-handling-00.txt
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On Oct 17, 2025, at 3:23 PM, Robert Raszuk <robert@raszuk.net> wrote:

With ADD-PATHs MP_UNREACH is quite different then MP_REACH.

What do you mean? In both of them, the NLRI is just the catenation of the Path ID and the NLRI as it would be without RFC 7911. From Section 3:

   In order to carry the Path Identifier in an UPDATE message, the NLRI
   encoding MUST be extended by prepending the Path Identifier field,
   which is of four octets.

RFC 7911 does not even talk about MP_REACH or MP_UNREACH.

Is one match of NLRI found in TAW enough irrespective of how many matches for the NLRI MP_REACH with extended NLRI encoding would/should contain ?

I don’t understand this question.

—John

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