The MPLS-OPS Archive

[Spice Sylvia <falsesylvia@yahoo.co.uk>]

Hi Aamer,


 --- Aamer Akhter <aakhter@cisco.com> wrote: 
> 
> On Oct 21, 2004, at 4:29 AM, Spice Sylvia wrote:
> 
> > Hello,
> >
> > Is there a reason why the LSP setup computation
> using
> > RSVP-TE is done on the head end and not node by
> node?
> 
> As RSVP-TE uses (the information) from the IGP
> topology it has the 
> information it needs to compute the path (and match
> it with the best 
> path request). Regardless, the path still has to be
> verified node by 
> node, and the nodes still have an opportunity to
> decline the 
> reservation (which triggers an igp update). It
> should be noted that 
> there are way to ways (loose ero) to distribute the
> path decision at 
> explicit places in the path.



Say I wish to set up an LSP from A to B with the
constraint that the number of hops should be x.
Why is node by node computation not feasable in this
case?


> 
> hth
> 
> >
> > -Sylvia
> >
> >
> > 	
> > 	
> > 		
> >
>
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> 
> -- 
> Aamer Akhter / aa@cisco.com
> NSITE cisco Systems
> 
>  


	
	
		
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