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

[Jeff Tantsura <[e-mail]>]

 Xufeng,

PCE as computational logic doesn’t change, they way the end result is represented and communicated could, so to be more precise - there are alternatives to PCEP

Cheers,
Jeff

> On Mar 7, 2019, at 7:17 AM, Xufeng Liu <[e-mail]> wrote:
> 
> 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 <[e-mail]> 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, [e-mail] 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 <[e-mail]> 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:[e-mail]]
>> >> 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: [e-mail]
>> Senior MPLS Expert
>> Bronze Dragon Consulting             phone: [phone]
>> 
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