The MPLS WG Archive

[Dimitri.Papadimitriou@alcatel.be]

hi adrian, as stated during the last ietf meeting such effort is of 
importance as we have to address the issue of MPLS/GMPLS PSC LSP for 
instance, in particular (going beyond who's wrong/right discussion here) 
consistency is key in this domain as well as common agreement on default 
behaviour (inline with the section 5 of this document) in addition to 
the request received from several people to detail more accurately (the 
sequence) on how preemption occurs in various scenarios including p&r,
in brief, it make sense to respin draft-farrel-mpls-preemption-00.txt

thanks,
- dimitri

---
Adrian Farrel wrote:

> 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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> 

-- 
Papadimitriou Dimitri
E-mail : dimitri.papadimitriou@alcatel.be
E-mail : dpapadimitriou@psg.com
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