The MPLS WG Archive

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

Title: RE: resource preemption

Hi

I think I know where your confusion comes from, the fact that although
you reserve on the path message you lock in the bandwidth on
the resv message. So I wouldn't preempt until the resv
comes back (because the path message might have failed at
subsequent hops). So in reality you do a check in both messages.

Don

> -----Original Message-----
> From: Navin [mailto:navin@empowertel.com]
> Sent: Friday, August 04, 2000 11:15 AM
> To: John Sparr; mpls
> Subject: RE: resource preemption
>
>
> Hi There,
>
> First of all, you carry out admission control check while
> processing the RESV message NOT PATH message.
>
> Secondly, admission control check will be done at all the nodes
> EXCEPT the receiver node as there you really don't reserve
> anything.
>
> Hope this helps,
>
> Cheers,
> Navin
>
>
> -----Original Message-----
> From: owner-mpls@UU.NET [mailto:owner-mpls@UU.NET]On Behalf Of John
> Sparr
> Sent: Friday, August 04, 2000 9:30 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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