Hi Tom,

I'm not sure to parse your comments.

SAPs are defined in the abstract, but also in the first sentence of the intro:  

   From the perspective of a service provider, the Service Attachment
   Points (SAPs) are abstraction of the network reference points where
   network services can be delivered to customers.

A VPN network access (RFC9182) is an example of a SAP. VRFs are another example 
of SAPs. Both are called out in the draft. 

Cheers,
Med

> -----Message d'origine-----
> De : OPSAWG <[email protected]> De la part de tom petch
> Envoyé : mercredi 27 avril 2022 11:21
> À : Joe Clarke (jclarke) <[email protected]>;
> [email protected]
> Objet : Re: [OPSAWG] WG LC: draft-ietf-opsawg-sap
> 
> From: OPSAWG <[email protected]> on behalf of Joe Clarke
> (jclarke) <[email protected]>
> Sent: 22 April 2022 20:00
> 
> Hello, Opsawg.  The last round of comments on this draft have been
> discussed/resolved, and we'd like to kick off a three-week WG LC
> for this work.  Please provide any and all feedback on list before
> the end of the day May 13, 2022.
> 
> <tp>
> I think that the problem with this I-D is that it does not know
> what a SAP is.  I have been using 'SAP' for decades, as in e.g.
> IEEE802, and this I-D is clearly nothing to do with a SAP, nothing
> to do with a service even.  Defining the role of a SAP as NNI or
> UNI tells me that whatever this I-D is about it is not any kind of
> S(ervice)... in any shape or form.
> 
> Reverse engineering the details does not help 'its reference to a
> termination point'  TP is well defined, but having an (undefined)
> reference to it tells me nothing 'SAP is not a TTP nor a link'
> that still leaves a lot of scope!
> and much of the later text talks of binding a SAP to an interface,
> a parent interface, an attachment interface and so on so clearly a
> SAP as used here (but not elsewhere) is closely associated with
> interfaces 'sap-id uniquely a SAP within a node' so the namespace
> is local to a node which limits what it might be used for
> 
> Yup, I do not know what this I-D is meant to be about.  It is a
> YANG module of a something but what that something is (clearly not
> a SAP), what use it is to have the concept of such a something in
> a network, I cannot tell.
> 
> Tom Petch
> 
> 
> Authors, if you have suggestions for a good shepherd for this
> document, we'd love to hear them.
> 
> I have requested reviews from Ops and Routing on this work.
> 
> Thanks.
> 
> Joe
> 
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