Re: [Teas] I-D Action: draft-ietf-teas-actn-framework-08.txt

Wouldn't it make sense to add a better explanation on what the ACTN framework as described in this document does _not_ try to provide?

For instance, the document apparently doesn't cover service assurance functions such as fault management. I am not sure how e.g. alarm correlation between multiple PNCs (possibly at different layers) would work in the ACTN framework as described in the document. But probably fault management and mechanisms such as alarm correlation and root-cause analysis are not in scope of ACTN?

Also, as far as I can see, except for Appendix B there is no network topology example that shows how ACTN would indeed apply to a multi-layer network (e.g., IP/MPLS over OTN). And IMHO the example in Appendix B is too simple as it shows only *one* IP/MPLS PNC and *one* Optical PNC, which may not be a realistic deployment in a larger network operators. As a result, I suggest to either remove Appendix B or to replace it by a more realistic topology example with multiple PNCs (both at IP/MPLS and Optical layer) as well as an actual explanation how ACTN would deal with multiple PNCs and multiple layers, i.e., an actual example what topology would be seen by which MDSC. To me, the current content in Appendix B doesn't really prove that the ACTN concepts indeed work for larger multi-layer scenarios. I'd also be fine with an explicit statement that the applicability of ACTN to multi-layer network deployments is not in scope of the document.

Michael

> -----Original Message-----
> From: Teas [mailto:teas-bounces@ietf.org] On Behalf Of Daniele Ceccarelli
> Sent: Wednesday, October 04, 2017 5:30 PM
> To: teas@ietf.org
> Subject: Re: [Teas] I-D Action: draft-ietf-teas-actn-framework-08.txt
> 
> Dear WG,
> 
> we submitted a new version of the ACTN framework draft which does not
> introduce or modify any concept but that is the result of a heavy text re-
> adjustment (thanks a lot Adrian for the huge effort) to improve readability
> and get rid of duplicated and redundant text.
> 
> The authors and contributors think this is ready for WG LC and would
> appreciate your comments to the list.
> 
> BR
> Daniele (for the co-authors)
> 
> > -----Original Message-----
> > From: Teas [mailto:teas-bounces@ietf.org] On Behalf Of internet-
> > drafts@ietf.org
> > Sent: mercoledì 4 ottobre 2017 17:15
> > To: i-d-announce@ietf.org
> > Cc: teas@ietf.org
> > Subject: [Teas] I-D Action: draft-ietf-teas-actn-framework-08.txt
> >
> >
> > A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> > This draft is a work item of the Traffic Engineering Architecture and
> > Signaling WG of the IETF.
> >
> >         Title           : Framework for Abstraction and Control of Traffic Engineered
> > Networks
> >         Authors         : Daniele Ceccarelli
> >                           Young Lee
> > 	Filename        : draft-ietf-teas-actn-framework-08.txt
> > 	Pages           : 37
> > 	Date            : 2017-10-04
> >
> > Abstract:
> >    Traffic Engineered networks have a variety of mechanisms to
> >    facilitate the separation of the data plane and control plane. They
> >    also have a range of management and provisioning protocols to
> >    configure and activate network resources.  These mechanisms
> >    represent key technologies for enabling flexible and dynamic
> >    networking.
> >
> >    Abstraction of network resources is a technique that can be applied
> >    to a single network domain or across multiple domains to create a
> >    single virtualized network that is under the control of a network
> >    operator or the customer of the operator that actually owns
> >    the network resources.
> >
> >    This document provides a framework for Abstraction and Control of
> >    Traffic Engineered Networks (ACTN).
> >
> >
> >
> > The IETF datatracker status page for this draft is:
> > https://datatracker.ietf.org/doc/draft-ietf-teas-actn-framework/
> >
> > There are also htmlized versions available at:
> > https://tools.ietf.org/html/draft-ietf-teas-actn-framework-08
> > https://datatracker.ietf.org/doc/html/draft-ietf-teas-actn-framework-0
> > 8
> >
> > A diff from the previous version is available at:
> > https://www.ietf.org/rfcdiff?url2=draft-ietf-teas-actn-framework-08
> >
> >
> > Please note that it may take a couple of minutes from the time of
> > submission until the htmlized version and diff are available at tools.ietf.org.
> >
> > Internet-Drafts are also available by anonymous FTP at:
> > ftp://ftp.ietf.org/internet-drafts/
> >
> > _______________________________________________
> > Teas mailing list
> > Teas@ietf.org
> > https://www.ietf.org/mailman/listinfo/teas
> 
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