Re: [Isis-wg] New Version Notification for draft-ginsberg-isis-te-app-03.txt

"Les Ginsberg (ginsberg)" <ginsberg@cisco.com> Thu, 22 June 2017 14:36 UTC

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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: "stephane.litkowski@orange.com" <stephane.litkowski@orange.com>, "Peter Psenak (ppsenak)" <ppsenak@cisco.com>, "isis-wg@ietf.org" <isis-wg@ietf.org>
Thread-Topic: [Isis-wg] New Version Notification for draft-ginsberg-isis-te-app-03.txt
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Date: Thu, 22 Jun 2017 14:36:11 +0000
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Subject: Re: [Isis-wg] New Version Notification for draft-ginsberg-isis-te-app-03.txt
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Stephane -

> -----Original Message-----
> From: stephane.litkowski@orange.com
> [mailto:stephane.litkowski@orange.com]
> Sent: Thursday, June 22, 2017 12:15 AM
> To: Peter Psenak (ppsenak); Les Ginsberg (ginsberg); isis-wg@ietf.org
> Subject: RE: [Isis-wg] New Version Notification for draft-ginsberg-isis-te-app-
> 03.txt
> 
> Hi Peter,
> 
> Thanks for your feedback, few comments inline
> 
> -----Original Message-----
> From: Peter Psenak [mailto:ppsenak@cisco.com]
> Sent: Wednesday, June 21, 2017 10:08
> To: LITKOWSKI Stephane OBS/OINIS; Les Ginsberg (ginsberg); isis-
> wg@ietf.org
> Subject: Re: [Isis-wg] New Version Notification for draft-ginsberg-isis-te-app-
> 03.txt
> 
> Hi Stephane,
> 
> On 21/06/17 09:42 , stephane.litkowski@orange.com wrote:
> > Hi Les,
> >
> > The proposal has a better shape. Still two comments:
> > - As mentioned earlier, please precise that LFA means any flavor of LFA
> (LFA,rLFA,dLFA,TILFA...).
> 
> I would just say any flavor of LFA. Not all LFA types are defined in IETF
> documents.
> [SLI] I agree, "any flavor" works
> 
> > - I would also like to see that "standard" applications may also use UDAs
> instead of the standard bit and possibility two sets of attributes (two UDAs or
> 1 std + 1 UDA): one example could be having an SR-TE tunnel using a
> particular set of attributes, and another SR-TE tunnel using another set of
> attributes.
> 
> nobody is preventing you to do that. You can map any application to a UDA
> bits.
> 
> [SLI] Yes, but nothings tells that it is also allowed. I just want this point to be
> clear in the text.
> 
[Les:] The draft explicitly states that the use of UDA bits is outside the purview of any standards body. It would be unwise - and contradictory - to then start specifying how UDA bits can/cannot be used. The whole point of UDA is that it is up to the user to decide what the bits mean.

You clearly have some ideas about how you want to use them - but it is not the role of any specification to comment on your ideas any more than anyone else's ideas.

I think it is necessary for the draft to remain silent in this area.

   Les

> 
> thanks,
> Peter
> 
> >
> > Brgds,
> >
> > Stephane
> >
> > -----Original Message-----
> > From: Isis-wg [mailto:isis-wg-bounces@ietf.org] On Behalf Of Les
> > Ginsberg (ginsberg)
> > Sent: Tuesday, June 20, 2017 16:30
> > To: isis-wg@ietf.org
> > Subject: [Isis-wg] FW: New Version Notification for
> > draft-ginsberg-isis-te-app-03.txt
> >
> > Folks -
> >
> > This new version adds support for using a set of link attribute
> advertisements for ANY application - something which the OSPF companion
> draft (draft-ppsenak-ospf-te-link-attr-reuse) supports.
> > It also aligns the encoding so that is similar to that defined in the OSPF
> draft.
> >
> >      Les
> >
> >
> > -----Original Message-----
> > From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
> > Sent: Tuesday, June 20, 2017 7:17 AM
> > To: Wim Henderickx; Stefano Previdi; Peter Psenak (ppsenak); Les
> > Ginsberg (ginsberg)
> > Subject: New Version Notification for
> > draft-ginsberg-isis-te-app-03.txt
> >
> >
> > A new version of I-D, draft-ginsberg-isis-te-app-03.txt has been
> successfully submitted by Les Ginsberg and posted to the IETF repository.
> >
> > Name:		draft-ginsberg-isis-te-app
> > Revision:	03
> > Title:		IS-IS TE Attributes per application
> > Document date:	2017-06-20
> > Group:		Individual Submission
> > Pages:		15
> > URL:            https://www.ietf.org/internet-drafts/draft-ginsberg-isis-te-app-
> 03.txt
> > Status:         https://datatracker.ietf.org/doc/draft-ginsberg-isis-te-app/
> > Htmlized:       https://tools.ietf.org/html/draft-ginsberg-isis-te-app-03
> > Htmlized:       https://datatracker.ietf.org/doc/html/draft-ginsberg-isis-te-
> app-03
> > Diff:           https://www.ietf.org/rfcdiff?url2=draft-ginsberg-isis-te-app-03
> >
> > Abstract:
> >     Existing traffic engineering related link attribute advertisements
> >     have been defined and are used in RSVP-TE deployments.  In cases
> >     where multiple applications wish to make use of these link attributes
> >     the current advertisements do not support application specific values
> >     for a given attribute nor do they support indication of which
> >     applications are using the advertised value for a given link.
> >
> >     This draft introduces new link attribute advertisements which address
> >     both of these shortcomings.  It also discusses backwards
> >     compatibility issues and how to minimize duplicate advertisements in
> >     the presence of routers which do not support the extensions defined
> >     in this document.
> >
> >
> >
> >
> >
> > 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.
> >
> > The IETF Secretariat
> >
> > _______________________________________________
> > Isis-wg mailing list
> > Isis-wg@ietf.org
> > https://www.ietf.org/mailman/listinfo/isis-wg
> >
> >
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> __________________________________________________________
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> _____
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