Hey Andrew,

Thanks a lot for your review. Addressed the minor comments in the latest 
revision.

Cheers,

Gaurav

From: "Andrew G. Malis" <agma...@gmail.com>
Date: Thursday, December 7, 2017 at 4:05 PM
To: "<rtg-...@ietf.org>" <rtg-...@ietf.org>
Cc: "rtg-...@ietf.org" <rtg-...@ietf.org>, 
"draft-ietf-spring-segment-routing-central-epe....@ietf.org" 
<draft-ietf-spring-segment-routing-central-epe....@ietf.org>, "spring@ietf.org" 
<spring@ietf.org>
Subject: RtgDir review: draft-ietf-spring-segment-routing-central-epe-07.txt

Hello,

I have been selected as the Routing Directorate reviewer for this draft. The 
Routing Directorate seeks to review all routing or routing-related drafts as 
they pass through IETF last call and IESG review. The purpose of the review is 
to provide assistance to the Routing ADs. For more information about the 
Routing Directorate, please see 
​http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir

Although these comments are primarily for the use of the Routing ADs, it would 
be helpful if you could consider them along with any other IETF Last Call 
comments that you receive, and strive to resolve them through discussion or by 
updating the draft.

Document: draft-ietf-spring-segment-routing-central-epe-07.txt
Reviewer: Andy Malis
Review Date: 7 December 2017
IETF LC End Date: 30 November 2017
Intended Status: Informational

Summary:
I have some minor concerns about this document that I think should be resolved 
before publication.

Comments:
This document very usefully demonstrates how Segment Routing can be used to 
provide BGP Egress Peer Engineering through the use of a centralized controller.

It has been through a number of reviews, so it is overall in good shape for 
publication.

Major Issues:

No major issues found.

Minor Issues:

1. This document is Informational, as it doesn't define any new protocol 
elements or contain any new actions for IANA. However, it does make use of RFC 
2119 language. Alvaro Retana has already commented on this usage, and I would 
like to add that especially in an Informational document, the use of RFC 2119 
language should be minimal and strictly used only to ensure interoperability 
(see section 6 of RFC 2119).

In particular, I don't agree with the use of the uppercase MUST in the second 
paragraph of section 9, which is imposing a requirement on an operator. This 
paragraph is simply a rephrasing of section 9 in 
draft-ietf-idr-bgpls-segment-routing-epe. I would much prefer a simple 
reference to that section in draft-ietf-idr-bgpls-segment-routing-epe rather 
than a restatement of that text in this document. That will also ensure that if 
the text in draft-ietf-idr-bgpls-segment-routing-epe should change (as that 
draft is still in progress), it would not require an update of this document to 
match.

2. I think that it would be useful to move section 7 higher in the document, 
perhaps as section 1.2.

3. I also note that the comments made by Alvaro in his email of November 3 have 
not yet been addressed. I agree with his comments, and request that they be 
addressed prior to publication.

Nits:

None.

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