Re: [mpls-linux-general] Benchmarking mpls problems !?

[James R. L. <jl...@mi...>]

On Mon, Mar 14, 2005 at 12:17:02PM +0100, sasa pavlek wrote:
> May be I didn't be enough specific. I was monitoring MPLS
> traffic on every LSR and TTL is decrementing every MPLS hop.

Yes the MPLS TTL _is_ decremented at every hop that is the whole point of i=
t.
If your refering to the IP TTL being changed at every hop, then your network
is configured wrong, and you did not cross connect the ILM and NHLFE, in
other words you created a bunch of single hop LSPs that result in L3 lookups
at every hop.

How are you creating the LSPs?  Did you try using quagga-mpls?  It
has a CLI for creating static LSPs that might be easier for you to use.

> On Mon, 14 Mar 2005, Christophe Fillot wrote:
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> > On Mon, 14 Mar 2005, Sasa Pavlek wrote:
> >
> > > One more problem: Why IP TTL is decrementing when transmitting thruog=
h MPLS
> > > network. I think that IP TTL must be unchanged in MPLS network.
> >
> > At ingress, the IP TTL is copied into MPLS TTL. At egress, the MPLS TTL
> > is copied into the IP TTL.
> >
> > --
> > Christophe Fillot (cf...@ut...) | Universite de Technologie de Compiegne
> > Tel: (+33) 03.44.23.79.02     | Service Informatique - Ingenieur Reseaux
> > GSM: (+33) 06.70.50.24.55     | Centre de Recherche de Royallieu
> > Fax: (+33) 03.44.23.46.77     | BP 20.529, 60205 Compiegne Cedex
> >
> >
>=20
>=20
>=20
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--=20
James R. Leu
jl...@mi...