The MPLS-OPS Archive

[Aamer Akhter <aakhter@cisco.com>]

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.

hth

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

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