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Re: [Teas] WG Last Call: draft-ietf-teas-rfc3272bis-16

Don Fedyk <dfedyk@labn.net> Thu, 23 June 2022 16:43 UTC

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From: Don Fedyk <dfedyk@labn.net>
To: Vishnu Pavan Beeram <vishnupavan@gmail.com>, TEAS WG <teas@ietf.org>
CC: TEAS WG Chairs <teas-chairs@ietf.org>
Thread-Topic: [Teas] WG Last Call: draft-ietf-teas-rfc3272bis-16
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Date: Thu, 23 Jun 2022 16:43:35 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/teas/F11A3eQoct6x3kGKD25H3NQiG80>
Subject: Re: [Teas] WG Last Call: draft-ietf-teas-rfc3272bis-16
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Hi

I have reviewed the document and think the main body provides good coverage of TE mechanisms.

The Appendixes A and B seem to stop at describing 25-year-old technology.
If they are not going to be updated, I would recommend removing them.

In the Appendix A the document points out that TE is evolutionary but stops at A.3.1 with the Overlay Model and 25-year-old technology.
I like this appendix and think it is important, but the evolution continued with MPLS displacing ATM etc.
As pointed out, in the main body many TE mechanisms were developed to improve or address issues with earlier TE mechanisms.
I think this Appendix should be updated.

An important backdrop to TE Evolution is technology evolution:
More powerful processing has allowed more optimal placement of traffic.
More powerful forwarding hardware/software has allowed more elaborate queueing and traffic management.

TE deployment runs in cycles where the network is bandwidth constrained and the use of TE is important then the link rates jump an order of magnitude and TE can become a burden.
Fast forward a couple of years, and now the network utilization is increasing and the choice of adding bandwidth or adding TE to use the resources more efficiently re-emerges.

In Append B Overview of Traffic Engineering Related Work in Other SDOs  <-  Not what is in this section.
I suggest removing or renaming this appendix.

Cheers
Don

From: Teas <teas-bounces@ietf.org> On Behalf Of Vishnu Pavan Beeram
Sent: Thursday, June 16, 2022 8:58 AM
To: TEAS WG <teas@ietf.org>
Cc: TEAS WG Chairs <teas-chairs@ietf.org>
Subject: Re: [Teas] WG Last Call: draft-ietf-teas-rfc3272bis-16

Thanks to everyone who reviewed and sent in their comments!

We are extending the last call to June 24th to allow for a few more reviews.

Regards,
-Pavan

On Tue, May 24, 2022 at 10:51 PM Vishnu Pavan Beeram <vishnupavan@gmail.com<mailto:vishnupavan@gmail.com>> wrote:
All,

This starts working group last call on
https://datatracker.ietf.org/doc/draft-ietf-teas-rfc3272bis/

Given the size of the document, this will be an extended
LC (3 weeks). The working group last call ends on June 14th.
Please send your comments to the working group mailing list.

Positive comments, e.g., "I've reviewed this document
and believe it is ready for publication", are welcome!
This is useful and important, even from authors.

Thank you,
Pavan (Co-Chair & Doc Shepherd)

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