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Re: [Gen-art] [Sidrops] Genart last call review of draft-ietf-sidrops-ov-egress-01

Ben Maddison <benm@workonline.africa> Fri, 20 March 2020 18:38 UTC

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From: Ben Maddison <benm@workonline.africa>
To: Randy Bush <randy@psg.com>
CC: "keyur@arrcus.com" <keyur@arrcus.com>, "last-call@ietf.org" <last-call@ietf.org>, "rjsparks@nostrum.com" <rjsparks@nostrum.com>, "sidrops@ietf.org" <sidrops@ietf.org>, "gen-art@ietf.org" <gen-art@ietf.org>, "draft-ietf-sidrops-ov-egress.all@ietf.org" <draft-ietf-sidrops-ov-egress.all@ietf.org>
Thread-Topic: [Sidrops] Genart last call review of draft-ietf-sidrops-ov-egress-01
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Date: Fri, 20 Mar 2020 18:38:00 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/gen-art/EPrpht63X5JjUmShm32XXl1Vl4s>
Subject: Re: [Gen-art] [Sidrops] Genart last call review of draft-ietf-sidrops-ov-egress-01
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It doesn't clarify anything for me, but then I happen to know where that algorithm is defined.

Having spend the better part of last week stepping a vendor through exactly these semantics, my current mood is that explicit and specific is better.

The intent in having the ref where it is, is to point at the AS_PATH => Origin As mapping procedure, rather than that section more generally.

Cheers,

Ben

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________________________________
From: Randy Bush <randy@psg.com>
Sent: Friday, 20 March 2020, 20:29
To: Ben Maddison
Cc: keyur@arrcus.com; last-call@ietf.org; rjsparks@nostrum.com; sidrops@ietf.org; gen-art@ietf.org; draft-ietf-sidrops-ov-egress.all@ietf.org
Subject: Re: [Sidrops] Genart last call review of draft-ietf-sidrops-ov-egress-01

> Although a little more verbose, perhaps the following is more explicit?
>
>     As the origin AS of a BGP UPDATE is decided by configuration and
>     outbound policy of the BGP speaker, a validating BGP speaker MUST
>     apply Route Origin Validation policy semantics Against the Route
>     Origin ASN as determined by applying the procedure in [RFC6811,
>     Section 2] to the AS_PATH (see RFC 4271 4.3 Path Attributes:b) that
>     it will send in the UPDATE to the peer.

i am torn about adding yet another 6811 ref.  does it clarify anything?
are there other possible "Route Origin Validation policy semantics?"

if so, i might put it earlier, after "apply Route Origin Validation
policy semantics".

randy

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