Re: [DMM] New Version Notification for draft-clt-dmm-tn-aware-mobility-07.txt

["Pablo Camarillo (pcamaril)" <[e-mail]>]

Hi Uma et al,

Thank you for all the work on this document.

As described in the abstract this document defines two things:
In section 2 you describe a framework to map slices in mobile systems to slices in the transport network; while in section 3 you describe how a new transport network underlay routing mechanism, Preferred Path Routing, can be used in combination with this framework.

PPR (draft-chunduri-lsr-isis-preferred-path-routing and draft-chunduri-lsr-ospf-preferred-path-routing) was last presented in LSR WG at IETF102 if I recall correctly.
The WG highlighted issues with regards to the scalability of the proposal. https://datatracker.ietf.org/doc/minutes-102-lsr/
Further discussion took place at the LSR mailer and those scalability concerns on PPR remain unaddressed.
https://mailarchive.ietf.org/arch/msg/lsr/6TzBBkmq4hQkiqyBeuN7MMOtMs0/

In my opinion it would be good to either address the LSR scalability concerns on PPR, or perhaps move all PPR content (Section 3 and related appendix) into a separate document.
Given that PPR is unneeded to define the framework -core of the ID-; and both sections seem orthogonal, I believe splitting the document would be appropriate.

Thank you,
Pablo.

From: dmm <[e-mail]> On Behalf Of Sri Gundavelli (sgundave)
Sent: viernes, 16 de octubre de 2020 20:50
To: Uma Chunduri <[e-mail]>; dmm <[e-mail]>
Cc: Luis M. Contreras <[e-mail]>; Richard Li <[e-mail]>; Jeff Tantsura <[e-mail]>; Praveen Muley <[e-mail]>; Sridhar Bhaskaran <[e-mail]>
Subject: Re: [DMM] New Version Notification for draft-clt-dmm-tn-aware-mobility-07.txt

WG – Please provide your inputs on this document. Authors have presented this earlier and like to get some feedback.

Sri


From: dmm <[e-mail]<mailto:[e-mail]>> on behalf of Uma Chunduri <[e-mail]<mailto:[e-mail]>>
Date: Friday, October 16, 2020 at 11:42 AM
To: dmm <[e-mail]<mailto:[e-mail]>>
Cc: "Luis M. Contreras" <[e-mail]<mailto:[e-mail]>>, Praveen Muley <[e-mail]<mailto:[e-mail]>>, Jeff Tantsura <[e-mail]<mailto:[e-mail]>>, Richard Li <[e-mail]<mailto:[e-mail]>>, Sridhar Bhaskaran <[e-mail]<mailto:[e-mail]>>
Subject: Re: [DMM] New Version Notification for draft-clt-dmm-tn-aware-mobility-07.txt

Dear DMM experts,

This version is a refresh but all comments received (offline and during the presentation at IETF106) were addressed.

Any further comments/suggestions are most welcome.

--
Uma C.


On Mon, Sep 28, 2020 at 4:44 PM <[e-mail]<mailto:[e-mail]>> wrote:

A new version of I-D, draft-clt-dmm-tn-aware-mobility-07.txt
has been successfully submitted by Uma Chunduri and posted to the
IETF repository.

Name:           draft-clt-dmm-tn-aware-mobility
Revision:       07
Title:          Transport Network aware Mobility for 5G
Document date:  2020-09-28
Group:          Individual Submission
Pages:          28
URL:            https://www.ietf.org/id/draft-clt-dmm-tn-aware-mobility-07.txt
Status:         https://datatracker.ietf.org/doc/draft-clt-dmm-tn-aware-mobility/
Htmlized:       https://datatracker.ietf.org/doc/html/draft-clt-dmm-tn-aware-mobility
Htmlized:       https://tools.ietf.org/html/draft-clt-dmm-tn-aware-mobility-07
Diff:           https://www.ietf.org/rfcdiff?url2=draft-clt-dmm-tn-aware-mobility-07

Abstract:
   This document specifies a framework and mapping from slices in 5G
   mobile systems to transport slices in IP and Layer 2 transport
   networks.  Slices in 5G systems are characterized by latency bounds,
   reservation guarantees, jitter, data rates, availability, mobility
   speed, usage density, criticality and priority should be mapped to
   transport slice characteristics that include bandwidth, latency and
   criteria such as isolation, directionality and disjoint routes.
   Mobile slice criteria need to be mapped to the appropriate transport
   slice and capabilities offered in backhaul, midhaul and fronthaul
   connectivity segments between radio side network functions and user
   plane function (gateway).

   This document describes how mobile network functions map its slice
   criteria to identifiers in IP packets that transport segments use to
   grant transport layer services.  This is based on mapping between
   mobile and IP transport underlays (IPv6, MPLS, IPv4, Segment
   Routing).  Applicability of this framework and a new transport
   network underlay routing mechanism, Preferred Path Routing (PPR),
   which brings slice properties and works with any underlying transport
   (L2, IPv4, SR and MPLS) is also discussed.





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