Re: [mpls-linux-general] FEC binding for src and dst address

[Rudy S W. <rs...@an...>]

I'm trying to associate a label and some QoS parameters  with a
specific FEC the uses both the source and destination IP address (IP
packet from the ingress LER). I want to give different QoS service levels
to IP hosts connected to an ingress LER that may be destined for the same
egress LER interface.

   IP(10.2.2.2)
     \
      ingress LER -------- egress LER----IP(10.4.4.5)
     /
   IP(10.1.1.1)

If traffic from 10.1.1.1 and 10.2.2.2 want to reach 10.4.4.5, they can
have two different labels.  In the label mapping procedure, I want to be
able to send two different IP address in the FEC tlv with one associated
with the source IP address and another with the destination IP address. Is
there any mechanism in ldp-portable to accomplish this?

~rsw

On Mon, 29 Mar 2004, James R. Leu wrote:

> What are you trying to accomplish, there might be a better way to
> do this.  For example you could use the path tlv to know where a
> label request originated (source).
>
> On Mon, Mar 29, 2004 at 05:45:50PM -0500, Rudy S Wen wrote:
> > Hello,
> >
> > I've been working with ldp-portable for the past few months in order to
> > adopt it to a thesis project that I'm completing.  I'm wondering if there
> > is support to negotiate a label binding for an FEC that uses both a source
> > and destination IP address? From what I've seen in ldp_nortel.h, and fec
> > can only be associated with either a source or destination IP addr but
> > not both. If i were to modify the ldp-portable to support this type of
> > FEC, are there any major difficulties that may occur? I know I've got to
> > modify ldp_fec.c, ldp_state_func.c, mpls_global.h, and ldp_nortel.c to
> > accomodate this change, would this be all that is necessary?
> >
> > Thanks for any help!
> > ~rsw
> >
> >
> >
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> --
> James R. Leu
> jl...@mi...
>
>