Subject: RE: Closer to a 'unified' ds-te approach ? RE: Is the advertiseme nt ( IGP) of available BW at each pre-emption le vel is a DS-TE- requirem ent ?

From: "Choudhury, Sanjaya" <[email-masked]>
Date: Mon, 26 Nov 2001 10:07:39 -0500

Hi Francois! Are you still planning to submit the
new DS-TE draft you are working on before the IETF
meeting ? 

[Note: I am _not_ referring to the DS-TE-REQTS draft,
which was posted today.]

Thanks,
sanjay

> -----Original Message-----
> From: Francois Le Faucheur [mailto:[email-masked]]
> Sent: Wednesday, November 14, 2001 9:11 AM
> To: Choudhury, Sanjaya
> Cc: 'Francois Le Faucheur'; [email-masked]
> Subject: Re: Closer to a 'unified' ds-te approach ? RE: Is the
> advertisement ( IGP) of available BW at each pre-emption le vel is a
> DS-TE- requirement ?
> 
> 
> Choudhury,
> 
> At 09:47 13/11/2001 -0500, Choudhury, Sanjaya wrote:
> 
> >Hi! It is nice to know that you are working on a
> >new draft that combines the previous proposals.
> >
> >-Is the new proposal based on important ideas from
> >all the previous DS-TE alternatives drafts(
> >Le Faucheur,Kompella,boyel,ash,bitar) ?
> 
> Yes, we're trying to pull together the best bits of some of these 
> proposals. There shouldn't be anything new compared to those.
> 
> >-Jim Boyel, in his response indicated that the new
> >DS-TE requirements draft is expected to be posted
> >next week.
> 
> >Do you have any time frame in mind for the preliminary
> >version of the 'Unified' DS-TE draft ?
> 
> I don't think we'll be able to issue it much before the 21 
> Nov cut-off date.
> 
> Thanks for your interest
> 
> Francois
> 
> >Thanks,
> >sanjay
> >
> >
> >
> > > -----Original Message-----
> > > From: Francois Le Faucheur [mailto:[email-masked]]
> > > Sent: Tuesday, November 13, 2001 8:06 AM
> > > To: Choudhury, Sanjaya; Jim Boyle
> > > Cc: [email-masked]
> > > Subject: Re: Is the advertisement (IGP) of available BW at each
> > > pre-emption le vel is a DS-TE- requirement ?
> > >
> > >
> > > Choudhury,
> > >
> > > At 20:17 09/11/2001 -0500, Jim Boyle wrote:
> > >
> > > >On Fri, 9 Nov 2001, Choudhury, Sanjaya wrote:
> > > >
> > > > >
> > > > >       Hi! I have few questions related to the LSP
> > > pre-emption in a DS-TE
> > > > >       environment. I will appreciate, your help with
> > > these questions.
> > > > >
> > > > >       Q1. If we support pre-emption _across_ different
> > > DiffServ classes,
> > > > >       then what is the advantage in advertising available
> > > bandwidth for
> > > > > each
> > > > >       class at _each pre-emption level_ ?
> > > >
> > > >There is no agreed upon protocol proposal for DS-TE right
> > > now, preemption
> > > >within and across class types is an issue that has been 
> raised on the
> > > >list.  At this point, the requirements document is under a
> > > revision which
> > > >should clarify the need (or lack of need) for this, the 
> revision is
> > > >expected in the next week (or so).  Francois or one of 
> his co-authors
> > > >may answer your question more directly, as you are 
> refering to their
> > > >proposal.
> > >
> > > Our previous draft discussed the advantages of 
> advertising bw at each
> > > preemption level for each Class-Type.
> > > This includes :
> > >          - ability to use one given preemption simultaneously
> > > by multiple CTs
> > >          - no dependency on consistent configuration of
> > > CT/preemption mapping
> > >          - easier migration scenarios
> > >
> > > However, after discussing more with some Service Providers,
> > > it seems that
> > > smaller IGP advertisement maybe more important than these above
> > > benefits.  We are currently working on merging several of 
> the earlier
> > > proposals into a common one which would advertise a total of
> > > 8 bandwidth
> > > values.
> > >
> > > Francois
> > >
> > >
> > >
> > > _________________________________________________________
> > > Francois Le Faucheur
> > > Development Engineer, IOS Layer 3 Services
> > > Cisco Systems
> > > Office Phone:          +33 4 97 23 26 19
> > > Mobile :               +33 6 89 108 159
> > > Fax:                   +33 4 97 23 26 26
> > > Email:                 [email-masked]
> > > _________________________________________________________
> > > Cisco Systems
> > > Domaine Green Side
> > > 400, Avenue de Roumanille
> > > 06 410  Biot - Sophia Antipolis
> > > FRANCE
> > > _________________________________________________________
> > >
> > >
> 
> _________________________________________________________
> Francois Le Faucheur
> Development Engineer, IOS Layer 3 Services
> Cisco Systems
> Office Phone:          +33 4 97 23 26 19
> Mobile :               +33 6 89 108 159
> Fax:                   +33 4 97 23 26 26
> Email:                 [email-masked]
> _________________________________________________________
> Cisco Systems
> Domaine Green Side
> 400, Avenue de Roumanille
> 06 410  Biot - Sophia Antipolis
> FRANCE
> _________________________________________________________ 
>