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Check MPLS WG Consensus (on nodeid-subobject)

  • From: "zafar ali" <zali@cisco.com>
  • Date: Tue, 1 Apr 2003 13:49:36 -0500
  • Cc: <mpls@UU.NET>
  • Importance: Normal

Hi Dimitri, 

Please see comments in-lined. 

Thanks
 
Regards... Zafar


> -----Original Message-----
> From: Dimitri.Papadimitriou@alcatel.be 
> [mailto:Dimitri.Papadimitriou@alcatel.be] 
> Sent: Tuesday, April 01, 2003 12:34 PM
> To: zafar ali
> Cc: mpls@UU.NET
> Subject: Re: Check MPLS WG Consensus (on nodeid-subobject)
> 
> 
> hi,
> 
> zafar ali wrote:
> > > several points here, first i'd like to know how this 
> relates to the 
> > > current polling of inter-area req's to worked out in the scope of 
> > > the tewg ? then i thought that inter-area/inter-as solution 
> > > development were within the scope of the ccamp wg (just 
> to be sure 
> > > that we also keep some consistence on the work is organised
> > > within the sub-ip area)
> >
> > 
> > Hi Dimitri,
> > 
> > I would just like to point out that the ID is applicable to 
> an single 
> > area TE case as well. This is for the cases where, either a box may 
> > like to avoid peeking into IGP database to find the Merge Point 
> > address from the interface addresses, or IGP is not used (a 
> > non-practical case).
> 
> well what does it mean that you will remove all the content 
> related to inter-area/inter-as and keep only the two cases 
> mentioned here above ? ... page 4/5 of this i-d explicitly 
> mentioned why this solution would make sense in inter-area 
> cases and for inter-as, i'd like to know how far we can go 
> in "advertizing" the ospf router-id between as's using rsvp? 

This will strictly be based on a policy enforced between the ASs. 

> - it also explains why we don't need it in single area case 
> i am not sure "avoid a lookup" would justify this - 
> 
> > In addition, as the contents/ extension in the drafts are so minor, 
> > the WG discussions at the IETF meeting went along the line 
> of moving 
> > forward with this as a more generic solution (which is not 
> a 100% tied 
> > up with the Inter-AS/ Inter-area discussions).
> 
> i am not sure we're on the same line here, do we propose
> a solution to a problem, or do we define a "minor object"
> and then try to see its applications ? 

Clearly draft proposes a solution to a practical problem (and I think we
agree on that). I am not sure how one can conclude the later part of
your statement, from my comments.  

> ... in fact you 
> have to spell it out in another way this draft raises a
> major issue (in section 5. you may not be an MP so might
> be wise to list the implications)
> 

Sorry, can you please elaborate more on the implications that you are
referring to? 

> (*) it is like a newobject in fact not only a flag since 
> we've to define the processing from the "worst case" view
> point when none information was previously available (this 
> is what you referred as "filtration cases")
> 
> thanks,
> - dimitri.
> > Thanks
> > 
> > Regards... Zafar
> > 
> > > now independently of the work organisation, this i-d
> > > is valuable when backup tunnels are used and i think
> > > the following i-d "complements" the proposed solution
> > > using detour lsp's for this real problem being "abr
> > > node protection and as border node protection":
> > >
> > 
> http://www.ietf.org/internet-drafts/draft-decnodder-mpls-interas-prote
> > ct
> > ion-00.txt
> > 
> > thanks,
> > - dimitri.
> > 
> > > LE ROUX Jean-Louis FTRD/DAC/LAN wrote:
> > >
> > > I agree for support of this draft
> > >
> > > JL
> > >
> > > >In San Francisco the workgroup showed support for making
> > > >   Definition of an RRO node-id subobject
> > > >     draft-vasseur-mpls-nodeid-subobject-00.txt
> > > >
> > > >an MPLS WG Document.  This message is to solicit any further 
> > > >comments
> > >
> > > >prior to making a final determination.
> > > >
> > > >Please reply by 4/7 24:00 GMT.
> > > >
> > > >...George
> > > >
> > > 
> >===================================================================
> > > >==
> > > >=
> > >
> > > >George Swallow          Cisco Systems                   (978)
> > > 936-1398
> > > >                         250 Apollo Drive
> > > >                         Chelmsford, Ma 01824
> > 
> > --
> > Papadimitriou Dimitri
> > E-mail : dimitri.papadimitriou@alcatel.be
> > Private: http://www.rc.bel.alcatel.be/~papadimd/index.html
> > E-mail : dpapadimitriou@psg.com
> > Public : http://psg.com/~dpapadimitriou/
> > Address: Fr. Wellesplein 1, B-2018 Antwerpen, Belgium
> > Phone  : +32 3 240-8491
> 
> -- 
> Papadimitriou Dimitri 
> E-mail : dimitri.papadimitriou@alcatel.be 
> Private: http://www.rc.bel.alcatel.be/~papadimd/index.html
> E-mail : dpapadimitriou@psg.com
> Public : http://psg.com/~dpapadimitriou/
> Address: Fr. Wellesplein 1, B-2018 Antwerpen, Belgium
> Phone  : +32 3 240-8491
>