RE : RE : Proposed strategy for Inter-area/AS

["LE ROUX Jean-Louis FTRD/DAC/LAN" <jeanlouis.leroux@francetelecom.com>]

Hi Fabio,

Advertising only a subset would improve scalability, but
this would not be enough to correclty select the best path.

Let's assume that there are three paths from a given ABR X to a given destination D
Path 1: bw 100M admin group {green;blue}
Path 2: bw 50M admin group {red; blue}
Path 3: bw 5M admin group {red;green}

and a TE-LSP L : Destination D, bw= 4M, affinity= exlude blue

If you advertise only Path 1 and Path 2 as virtual links, ABR X will never be selected as next ABR for this TE-LSP, while path 3 is a feasible path.

Regards

JL 



> -----Message d'origine-----
> De : owner-ccamp@ops.ietf.org 
> [mailto:owner-ccamp@ops.ietf.org] De la part de ricciato
> Envoyé : lundi 26 avril 2004 09:48
> À : LE ROUX Jean-Louis FTRD/DAC/LAN
> Cc : adrian@olddog.co.uk; ccamp@ops.ietf.org
> Objet : Re: RE : Proposed strategy for Inter-area/AS
> 
> 
> Hi JL,
> 
> just a quick remark: would it make sense in this case to 
> advertise only 
> a selected subset of the N virtual links (say the two with 
> most residual 
> bw) ?
> 
> ciao
> fabio
> 
> LE ROUX Jean-Louis FTRD/DAC/LAN wrote:
> 
> >Let's assume that there are N distinct paths from ABR A to a 
> >destination X, each with a distinct bandwidth and distinct 
> admin-group 
> >(a path admin group being expressed as a logical AND of the 
> link admin 
> >groups along the path) How can you summarize such topology ? 
> Actually 
> >you need to advertise N virtual links, each with a distinct 
> admin-group 
> >and available bandwidth.
> >
> >
> >  
> >
> >  
> >
> 
> 
>