Re: [nsp] Resetting IP Precedence

From: Martin Picard (mpicard@sinc.ca)
Date: Mon Jul 17 2000 - 14:31:40 EDT


I'm thinking of this in an MPLS environment,
if I have CAR configured to set the IP Precedence to 0
for all packets leaving on an interface that is MPLS-enabled.
Will the Exp field of MPLS be set according to
the Precedence set by CAR ??

tx
mp

> On Mon, Jul 17, 2000 at 02:09:34PM -0400, Martin Picard wrote:
> >
> > With PBR I can set the IP precedence of "incoming" traffic.
> > With CAR I can set the IP precedence of "incoming" and "outgoing"
> > I need to set the precedence on "outgoing", looks like I have to use
CAR
> > !!
>
> well, you could use PBR to match on the outgoing interface and set
> precedence, which would be effectively the same.
>
> > The only way I know with CAR is by using the rate-limit statement.
> > But I too, think this would be pretty inefficient regardless of the
> > datarates
> > specified because of the bucket algo.
>
> Whatever overhead CAR has is pretty independent of the datarate.
>
> > Is there a special datarate that would disable the Token bucket
> algo ?
>
> Nope.
>
> > Is there any other way with or without CAR to set the "outgoing"
> > precedence ?
> >
>
> PBR to match on outgoing interface, but I suspect tx CAR will be less
> CPU cycles.
>
>
>
> eric
>



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