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Re: [Idr] AD Review of draft-ietf-idr-tunnel-encaps-15

John Scudder <jgs@juniper.net> Fri, 01 May 2020 21:11 UTC

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From: John Scudder <jgs@juniper.net>
To: Alvaro Retana <aretana.ietf@gmail.com>
CC: "draft-ietf-idr-tunnel-encaps@ietf.org" <draft-ietf-idr-tunnel-encaps@ietf.org>, "idr-chairs@ietf.org" <idr-chairs@ietf.org>, "idr@ietf. org" <idr@ietf.org>
Thread-Topic: AD Review of draft-ietf-idr-tunnel-encaps-15
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Date: Fri, 01 May 2020 21:11:24 +0000
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Subject: Re: [Idr] AD Review of draft-ietf-idr-tunnel-encaps-15
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Whoops, this

> [major] Does this text from rfc5512 apply?
> 
>    When the TLV is being processed by a BGP speaker that will be
>    performing encapsulation, any unknown sub-TLVs MUST be ignored and
>    skipped.  However, if the TLV is understood, the entire TLV MUST
>    NOT be ignored just because it contains an unknown sub-TLV.

is covered by section 11 as well:

   If a TLV of a Tunnel Encapsulation attribute contains a sub-TLV that
   is not recognized by a particular BGP speaker, the BGP speaker MUST
   process that TLV as if the unrecognized sub-TLV had not been present.

Section 11 goes into a lot more detail on sub-TLV handling besides.

—John

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