The MPLS WG Archive

[dwilder@baynetworks.com (David Wilder)]

Hello,

I don't understand why you say that FEC to LSP bindings would be 'historical'
in router-based networks.  Would one of you expand on that for me?


Thanks,

Dave


> At 17:39 04/25/2000 -0700, Bora Akyol wrote:
> >I presume you are not familiar with how MPLS is actually used in providers networks.
> 
> I presume you are not familiar with how MPLS is actually used in providers'
> ATM networks. :)
> 
> >FEC to LSP binding is almost historical now.
> 
> That's arguably true in router-based networks, because of the
> predominance of TE as an application of MPLS in those networks.
> However, FEC to LSP binding is very much alive in ATM MPLS
> networks. Also, at least one MPLS-based VPN scheme relies on
> hop-by-hop routed MPLS (which may, in turn, be over-ridden by
> TE) in network cores of any type.
> 
> Regards,
> 
> Jeremy Larence
> 
> 
> 
> 
> >At 10:55 AM 4/25/00 +0530, Manish R. Shah. wrote:
> >
> >>Hi !!!
> >>
> >>Once the LSP's are created, the ingress router looks for the matching FEC, and attaches
> >>a label corresponding to that FEC on to the data packet. Further forwarding is done using
> >>the label switching.
> >>
> >>In an MPLS domain the LDP has already taken care of mapping
> >>FEC's with the incoming and outgoing Labels and efficient distribution of Labels.
> >>
> >>Look at the following draft for furthur details.  draft-ietf-mpls-ldp-06.txt
> >>
> >>Cheers !!!
> >>
> >>Manish R. Shah.
> >>Senior Software Engineer,
> >>Future Software Pvt Ltd.
> >>480-481, Anna Salai, Nandanam
> >>Chennai 600035.
> >>Phone: +91-(44)-433-0550 Xten 294.
> >>
> >>
> >>-----Original Message-----
> >>From:   Neetu Gupta [SMTP:neetug@daewoo.dti.daewoo.co.kr]
> >>Sent:   Tuesday, April 25, 2000 10:28 AM
> >>To:     mpls@uu.net
> >>Subject:        Finding the Egress Point in the MPSL Domain for the specific Destination
> >>
> >>Hello,
> >>     Suppose the LSPs are created among the Edge Routers in the MPLS
> >>Domain with specific class of services. Now the data packet comes at the
> >>Ingress LER, the IP Header contains the Destination Address and TOS
> >>byte.
> >>
> >>Since there are labels to Egress Router, to which Egress LER the data
> >>packet will be forwarded that will route to the Destination?
> >>
> >>I've heard of the draft that specifies how to treat LSP tunnel end node
> >>like LSP egress edge as next node for route calculations.
> >>Please give some reference.
> >>Neetu
> >
> >
> >
> >
> 
>