Re: [spring] Network Programming Interface for Provisioning of Underlay Services to Overlay Networks Using SRv6 (draft-xie-spring-srv6-npi-for-overlay)

[Tom Hill <[e-mail]>]

Hi Jinrong,

On 08/03/2022 01:58, Xiejingrong (Jingrong) wrote:
> I just posted a draft that specifies a framework and some more detail of 
> the idea for provisioning of underlay services 
> (Slice/SR-policy/Mcast/etc) to overlay networks(SD-WAN/CDN/etc), using SRv6.
> 
> https://datatracker.ietf.org/doc/html/draft-xie-spring-srv6-npi-for-overlay 
> <https://datatracker.ietf.org/doc/html/draft-xie-spring-srv6-npi-for-overlay>
> 
> Please comment and send any feedback.
> 
> I would like to discuss this document over e-mail/mail-list.


I'm concerned that this draft is explicitly violating the concept of 
SRv6 as a protocol that operates within a Limited Domain.

As per Section 3.2 of this draft, "... the network operator of AN, TN 
and Internet can be different from each other."

Further, "In some scenarios, the AN can be an Internet exchange provider 
(IXP) independent of ISP and NSP. In some other scenarios, the AN can be 
an ISP that running Internet backbone as well."

This would read to me that the proposal is explicitly intended to be 
inter-domain, and not at all limited to any one administrative domain. 
Additionally, I cannot determine if the draft implicitly requires the 
use of SIDs across the public Internet?

Could I ask for some clarification on the scope of the draft, with 
respect to Limited Domains, and also the use of SIDs over the public 
Internet?

Kind regards,

-- 
Tom