RE: Need help with MPLS configuration example

From: Andrew Ramsey (akramsey@juniper.net)
Date: Wed Aug 08 2001 - 14:13:30 EDT


Hi Andrew,

> -----Original Message-----
> From: Andrew Smith [mailto:as160@yahoo.com]
> Sent: Wednesday, August 08, 2001 1:57 PM
> To: Greg Ketell; Gary Tate
> Cc: juniper-nsp@puck.nether.net
> Subject: RE: Need help with MPLS configuration example
>
>
> Hi, Greg
>
> In line.
> --- Greg Ketell <gketell@juniper.net> wrote:
> > At 09:31 AM 8/8/2001, Andrew Smith wrote:
> > >Hi, Greg
> > >
> > >Thanks. Now I am almost golden. :)
> > >
> > >I still have some confusion about one of my
> > previous
> > >question. If I have IP streams with different TOS
> > bit
> > >set (say 0, 3, 7) and I want to them use the same
> > LSP.
> > > So you need to map the EXP bit into the queues.
> > Is
> > >it possible to map 3 different EXP bits under the
> > same
> > >LSPs along the transit LSRs
> >
> > Yes
>
> I was just playing with the CLI. It seems like under
> one LSP you can't assign just one class-of-service
> value. If this is the case then you can't have
> different EXP bits under one LSP. Did I miss
> something important here?

For RSVP signalled LSPs you do have the *option* to configure an LSP
with a particular EXP value. If you choose to use this option all
packets that travel this LSP will have that configured value.

protocols {
    mpls {
        label-switched-path andrew_smith {
            to 1.1.1.1;
            class-of-service 5; <==== all packets have 101
        }
    }

If you choose not to use this option then the behavior is as Greg
specified.

For prefix based LSPs the behavior is as Greg specified.

>
> TIA
> Andrew
>
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