Subject: Re: [spring] Adam Roach's No Objection on draft-ietf-spring-segment-routing-msdc-08: (with COMMENT)

From: Gaurav Dawra <[email-masked]>
Date: Tue, 6 Feb 2018 05:01:19 -0800

Adam,

Thanks for the comments. Inline…[Gaurav]

> On Jan 10, 2018, at 8:01 PM, Adam Roach <[email-masked]> wrote:
> 
> Adam Roach has entered the following ballot position for
> draft-ietf-spring-segment-routing-msdc-08: No Objection
> 
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> 
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-spring-segment-routing-msdc/
> 
> 
> 
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
> 
> I spent a long time trying to understand the following text from section 2,
> where the sub-bullet appears to flatly contradict its parent bullet:
> 
>   o  Each node is its own AS (Node X has AS X). 4-byte AS numbers are
>      recommended ([RFC6793]).
> 
>      *  For simple and efficient route propagation filtering, Node5,
>         Node6, Node7 and Node8 use the same AS, Node3 and Node4 use the
>         same AS, Node9 and Node10 use the same AS.
> 
> After a great deal of study of these and the following bullets, I convinced
> myself (perhaps incorrectly?) that the intention here is to say "We're going to
> talk about these nodes as if they each have their own AS, although in real
> deployments they'll probably be grouped together." Is that the intention? If
> so, it would be much easier to read if the sub-bullet made this clearer.
> 
[Gaurav] Yes, thats the intension. In reality they can be grouped together in such as way that Tier-1 for instance in the Center for Node 5, 6, 7,8 have same ASN.

Cheers,

Gaurav
> 
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