The MPLS WG Archive

[Ina Minei <ina@juniper.net>]

	Adrian,

	What about existing implementations and deployments of the soft
preemption draft?


			Thanks,

				Ina

>
> > -----Original Message-----
> > From: Adrian Farrel [mailto:adrian@olddog.co.uk]
> > Sent: Wednesday, March 31, 2004 7:36 AM
> > To: 'mpls@uu.net'
> > Subject: Re: I-D ACTION:draft-ietf-mpls-soft-preemption-02.txt
> >
> > Hi,
> >
> > In Seoul, while discussing draft-farrel-mpls-preemption-00.txt, I asked
> > whether
> > draft-ietf-mpls-soft-preemption-01.txt was now fully redundant or whether
> > it would be
> > respun for a different problem space.
> >
> > As far as I can see, the resubmission as 02 is unchanged from 01 so I
> > assume that this has
> > been done simply to keep the draft alive. Can the authors/chairs/WG
> > comment on the plans
> > for this draft.
> >
> > Thanks,
> > Adrian
> >
> > Hint: I am scheduled to respin draft-farrel-mpls-preemption to fully
> > address GMPLS
> > requirements (it already addresses MPLS requirements). However, I am only
> > going to do this
> > if there really is support from the WG. I see no value in both drafts
> > addressing the same
> > problem space.
> >
> > ----- Original Message -----
> > From: <Internet-Drafts@ietf.org>
> > To: <IETF-Announce:>
> > Cc: <mpls@UU.NET>
> > Sent: Tuesday, March 23, 2004 9:46 PM
> > Subject: I-D ACTION:draft-ietf-mpls-soft-preemption-02.txt
> >
> >
> > > A New Internet-Draft is available from the on-line Internet-Drafts
> > directories.
> > > This draft is a work item of the Multiprotocol Label Switching Working
> > Group of the
> > IETF.
> > >
> > > Title : MPLS Traffic Engineering Soft preemption
> > > Author(s) : M. Meyer, et al.
> > > Filename : draft-ietf-mpls-soft-preemption-02.txt
> > > Pages : 10
> > > Date : 2004-3-23
> > >
> > > This draft documents MPLS TE Soft Preemption, a suite of protocol
> > > modifications extending the current concept of preemption with the goal
> > > of reducing/eliminating traffic disruption of preempted TE LSPs.  Under
> > > present RSVP-TE signaling methods, LSPs are immediately displaced upon
> > > preemption.  The introduction of a new preemption pending flag helps
> > > more gracefully mitigate the re-route process of displaced LSPs.  For
> > > the brief period soft preemption is activated, reservations (though not
> > > necessarily traffic levels) are in effect overbooked until the LSP can
> > > be re-routed.  For this reason, the feature is primarily interesting in
> > > packet oriented MPLS networks with Diffserv and TE capabilities.
> > >
> > > A URL for this Internet-Draft is:
> > > http://www.ietf.org/internet-drafts/draft-ietf-mpls-soft-preemption-
> > 02.txt
> > >
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> > >
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>