Re: [OPSAWG] Zaheduzzaman Sarker's Discuss on draft-ietf-opsawg-vpn-common-10: (with DISCUSS and COMMENT)

[Zaheduzzaman Sarker <[e-mail]>]

Thanks Med for addressing the discuss points. I have now balloted NO OBJECTION.

BR
Zahed

On 2021-09-23, 15:10, "[e-mail]" <[e-mail]> wrote:

    Hi Zahed, 

    FWIW, a new version that resolves your DISCUSS is available online: https://www.ietf.org/rfcdiff?url2=draft-ietf-opsawg-vpn-common-11. 

    Cheers, 
    Med

    > -----Message d'origine-----
    > De : OPSAWG [mailto:[e-mail]] De la part de
    > [e-mail]
    > Envoyé : mercredi 22 septembre 2021 08:09
    > À : Zaheduzzaman Sarker <[e-mail]>; The IESG
    > <[e-mail]>
    > Cc : [e-mail]; [e-mail]; opsawg-
    > [e-mail]
    > Objet : Re: [OPSAWG] Zaheduzzaman Sarker's Discuss on draft-ietf-opsawg-
    > vpn-common-10: (with DISCUSS and COMMENT)
    > 
    > Hi Zahed,
    > 
    > Thank you for the review.
    > 
    > Please see inline.
    > 
    > Cheers,
    > Med
    > 
    > > -----Message d'origine-----
    > > De : Zaheduzzaman Sarker via Datatracker [mailto:[e-mail]]
    > > Envoyé : mardi 21 septembre 2021 17:22 À : The IESG <[e-mail]>
    > Cc
    > > : [e-mail]; [e-mail];
    > > [e-mail]; [e-mail]; [e-mail] Objet :
    > > Zaheduzzaman Sarker's Discuss on draft-ietf-opsawg-vpn-common-
    > > 10: (with DISCUSS and COMMENT)
    > >
    > > Zaheduzzaman Sarker has entered the following ballot position for
    > > draft-ietf-opsawg-vpn-common-10: Discuss
    > >
    > > When responding, please keep the subject line intact and reply to all
    > > email addresses included in the To and CC lines. (Feel free to cut
    > > this introductory paragraph, however.)
    > >
    > >
    > > Please refer to https://www.ietf.org/blog/handling-iesg-ballot-
    > > positions/
    > > for more information about how to handle DISCUSS and COMMENT
    > positions.
    > >
    > >
    > > The document, along with other ballot positions, can be found here:
    > > https://datatracker.ietf.org/doc/draft-ietf-opsawg-vpn-common/
    > >
    > >
    > >
    > > ----------------------------------------------------------------------
    > > DISCUSS:
    > > ----------------------------------------------------------------------
    > >
    > > I would like to discuss the extensibility of the model as described in
    > > section
    > > 3 regarding 'qos-classification-policy' when UDP is used as substrate.
    > > See more in my comments bellow.
    > >
    > 
    > [[Med]] Good point. I added this NEW text:
    > 
    >          Some transport protocols use existing protocols (e.g., TCP or
    >          UDP) as substrate.  The match criteria for such protocols may
    >          rely upon the 'protocol' under 'l3', TCP/UDP match criteria
    >          shown in Figure 4, part of the TCP/UDP payload, or a
    >          combination thereof.  This version of the module does not
    >          support such advanced match criteria.  Future revisions of the
    >          module may consider adding match criteria based on the
    >          transport protocol payload (e.g., by means of a bitmask match).
    > 
    > Do we need to say more? Thanks.
    > 
    > >
    > > ----------------------------------------------------------------------
    > > COMMENT:
    > > ----------------------------------------------------------------------
    > >
    > > Thanks to the authors for working on this specifications and
    > > addressing TSVART review comments. Thanks Wesley Eddy for your TSVART
    > reviews.
    > >
    > > Comments -
    > >
    > > * In this specification, UDP match criteria is described and claimed
    > > that the model can be augmented to include more L4 transport
    > protocols.
    > > QUIC (RFC9000) is a new L4 transport protocol and uses UDP as
    > substrate.
    > > For such L4 transport protocols, it might be ambiguous to apply qos
    > > classification policy based on what is defined here. In case of QUIC,
    > > it needs to identify from other UDP traffic that is traversing the
    > network.
    > > Read more on QUIC traffic identification here (
    > > https://protect2.fireeye.com/v1/url?k=f8f8a948-a763904d-f8f8e9d3-86959e472243-f06271c8273d5cdf&q=1&e=9ef66833-f37f-4252-baf9-2fa674946a2d&u=https%3A%2F%2Fquicwg.org%2Fops-
    > > drafts/draft-ietf-quic-manageability.html#name-identifying-quic-
    > > traffic).
    > >
    > > I think this specification should consider such potential substrate
    > > usage of L4 protocols (specially UDP) and hint on the potential
    > > augmentations (there might be several ways to do that) or scope it
    > > down to not support such cases.
    > >
    > 
    > [[Med]] I guess this is covered by the NEW text above.
    > 
    > > * May be the commented text in the section 4 for protocol identifiers
    > > should be updated to reflect what is describes in the section 3 for
    > > "underlay-transport".
    > > Section 3 talks about underlay transports and how they are set.
    > >
    > 
    > [Med]] Good catch. Fixed. Please check https://protect2.fireeye.com/v1/url?k=117d6386-4ee65a83-117d231d-86959e472243-178a805f659f3123&q=1&e=9ef66833-f37f-4252-baf9-2fa674946a2d&u=https%3A%2F%2Fgithub.com%2FIETF-OPSAWG-
    > WG/lxnm/commit/b071ca3b8a9dec654b537ecf9c0116d2adf02aca
    > 
    > 
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