Hi Chairs,

After a long-time discussion and many contributions have been made to the 
topic,  I believe we have get the point that we should step forward to adopt 
the CSID draft, therefore, I fully agree with the CSID authors' POV.

Many thanks for your work, it MUST be difficult for you :)
But I still believe that we can address the tough tasks very soon as long as we 
can still move forward.

Thank you again for the excellent work and respect,
Cheng



-----Original Message-----
From: spring [mailto:[email protected]] On Behalf Of Weiqiang Cheng
Sent: Wednesday, September 8, 2021 11:25 AM
To: 'Joel M. Halpern' <[email protected]>; [email protected]
Subject: Re: [spring] Conclusion from WG poll on dataplane solution for 
compressing segment routing over IPv6

Dear Chairs,

Many thanks for your hard working. 

We are happy to see that the CSID draft has significant interest to be adopted 
as a WG document. 

Regarding the dataplane, the authors believe that the CSID draft contains only 
one dataplane solution with two different flavors[1]: NEXT-CSID-FLAVOR and 
REPLACE-CSID-FLAVOR, rather than two dataplane solutions.

Both the flavors are defined based on the SRv6 data plane(one data plane), and 
the SIDs with these two flavors can be encoded in a single SRH just like we can 
encode PSP Flavor SIDs and USD flavor SIDs together in a SRH.

The inter-op test of CSIDs had been done almost one year ago[2], and everything 
was OK. 

Furthermore, the mechanism defined in the draft has been stable and mature.

With the consensus, the authors hope WG can consider to adopt the CSID draft.

Best regards,
Weiqiang
on behalf of CSID authors

[1]. https://datatracker.ietf.org/doc/html/rfc8986#section-4.16
[2].
https://datatracker.ietf.org/doc/html/draft-filsfilscheng-spring-srv6-srh-co
mpression-02#section-11



-----邮件原件-----
发件人: spring [mailto:[email protected]] 代表 Joel M. Halpern
发送时间: 2021年9月7日 01:27
收件人: [email protected]
主题: [spring] Conclusion from WG poll on dataplane solution for compressing 
segment routing over IPv6

Our thanks to the working group members for speaking up clearly.  There is a 
rough (quite clear) consensus for standardizing one dataplane solution to 
compressing segment routing over IPv6.

As chairs, there are some related observations we need to make.
There appears to be significant interest in using the framework in the CSID 
draft for addressing the above.

However, before we issue a call for adoption on that, the chairs would like to 
understand how the working group wants to solve a technical problem.  The CSID 
draft contains two dataplane solutions.  The above rough consensus is for one 
dataplane solution.  Does the working group want to choose one?  Do the authors 
want to suggest that one of the two is the one we should standardize, and get 
working group agreement?
Should we adopt the document, with a note indicating the problem, and solve the 
problem afterwards?  (That itself does not solve the problem, it merely kicks 
it down the road.) Do folks see another means to avoid putting the WG in 
conflict with itself?

As a loosely related side node, the chairs will also observe that we do not see 
an obstacle to informational or experimental publication of other solutions, as 
long as there is sufficient energy in the working group to deal with those.  
Also, only documents for which there is at least one implementation will be 
progressed this way.

Thank you,
Bruno, Jim, and Joel

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