The MPLS WG Archive

["Don Fedyk" <dwfedyk@nortelnetworks.com>]

Title: RE: resource preemption

John

The compare is done in several places depending on
how the path was calculated.

Initially the path selection algorithm performs the
compare at each node in the topology database. This step
can be skipped if you calculate the ERO manually or offline.

Then as a path message is processed at each single hop the
comparison is performed again for each link traversed.
The receiver does not have do anything, since the bandwidth
has been allocated by all the single hops along the way.

Don

> -----Original Message-----
> From: John Sparr [mailto:johnrdb@yahoo.com]
> Sent: Friday, August 04, 2000 10:30 AM
> To: mpls@UU.NET
> Subject: resource preemption
>
>
> Hi,
>
> Quick question on resource preemption from RSVP-TE.
>
> In section 4.8.3, it says when a new Path message is
> considered for admission, the bandwidth requested is
> compared with the bandwidth at the priority specified
> in the Setup Priority.
>
> My question is who will do this compare, intermidiate
> nodes or receiver?
>
>
> Thanks in advance
> John
>
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