Re: [teas-3272bis-design-team] 答复: 3272biss and YANG

Xufeng Liu <xufeng.liu.ietf@gmail.com> Thu, 07 March 2019 15:17 UTC

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From: Xufeng Liu <xufeng.liu.ietf@gmail.com>
Date: Thu, 07 Mar 2019 10:17:00 -0500
Message-ID: <CAEz6PPToOQgUJX00MW0XDW7MukpRj5f2ipJeJnHMRjuFCBkWyA@mail.gmail.com>
To: Loa Andersson <loa@pi.nu>
Cc: Julien Meuric <julien.meuric@orange.com>, teas-3272bis-design-team@ietf.org
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Subject: Re: [teas-3272bis-design-team] 答复: 3272biss and YANG
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Hi Loa,

Agree that the "model driven networking" does bring a new perspective to
TE. This is a new technology and methodology, which can be viewed as a
competitive alternative to PCE/PCEP in a way. As Julien mentioned, PCE/PCEP
is also new since RFC3272. Both should be covered in the BIS.

Thanks,
- Xufeng

On Thu, Mar 7, 2019 at 9:54 AM Loa Andersson <loa@pi.nu> wrote:

> Daniele,
>
> Happy that you agree with me, though I did not really make a point  ;).
> I only asked a simple question, in part based on 3272 itself.
> I'm still looking for a response to the question.
>
> My reasoning was that RFC 3272 discusses (at some length) distributed
> vs. centralized control plane, what I was thinking about was whether
> model driven networking bring something new to the table from a TE
> perspective.
>
> I got some responses, but nothing that helps me understand what is
> going on.
>
> /Loa
>
>
>
>
> On 2019-03-07 19:23, julien.meuric@orange.com wrote:
> > Hi Daniele,
> >
> >> In hierarchical SDN all the traffic engineering is done with Restconf
> > + YANG.
> >
> > Not entirely true either. Ever read RFC 6805 or 7491? ;-b
> >
> > Julien
> >
> >
> > On 07/03/2019 11:33, Daniele Ceccarelli wrote:
> >> Well this is not entirely true.
> >> There is plenty of YANG Models for traffic engineering. TE-topology,
> TE-tunnel, TE-mapping...just to mention some of them.
> >> In hierarchical SDN all the traffic engineering is done with Restconf +
> YANG.
> >> I agree with Loa, it would be probably good to have at least a section
> dedicated to YANG.
> >> BR
> >>
> >> Daniele
> >>
> >> -----Original Message-----
> >> From: Teas-3272bis-design-team <
> teas-3272bis-design-team-bounces@ietf.org> On Behalf Of Aijun Wang
> >> Sent: den 7 mars 2019 09:42
> >>
> >> Yang is not closely related to the TE solution. Should we pay more
> attention to other emerged TE solutions for various environments?
> >>
> >>
> >> Best Regards.
> >>
> >> Aijun Wang
> >> Network R&D and Operation Support Department China Telecom Corporation
> Limited Beijing Research Institute,Beijing, China.
> >>
> >> -----邮件原件-----
> >> 发件人: Loa Andersson [mailto:loa@pi.nu]
> >> 发送时间: 2019年3月7日 15:45
> >>
> >>
> >> All,
> >>
> >> When 3272 was published, YANG modelling ws not over the horizon, is
> there anything we need to say in 3272bis about YANG?
> >>
> >> /Loa
> >>
> >
> >
> >
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> --
>
>
> Loa Andersson                        email: loa@pi.nu
> Senior MPLS Expert
> Bronze Dragon Consulting             phone: +46 739 81 21 64
>
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