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Cell Relay Retreat>MPLS WG Archive>month:2002-Jun> msg00028



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Basic LDP Question

  • From: Nabil Seddigh <nseddigh@tropicnetworks.com>
  • Date: Tue, 04 Jun 2002 15:08:22 -0400
  • CC: "'mpls@uu.net'" <mpls@UU.NET>, "'ppvpn@ppvpn.francetelecom.com'" <ppvpn@ppvpn.francetelecom.com>
  • Organization: Tropic Networks
  • X-OriginalArrivalTime: 04 Jun 2002 19:08:22.0353 (UTC) FILETIME=[3202B410:01C20BFB]


Discussion regarding spoofing, header overhead, hw availability etc 
all appear to be ancillary arguments made in hindsight.

It seems to me that LDP's emergence a number of years ago could be
attributed primarily to the need for alternatives to the 
longest prefix match route lookup. The latter was typically 
software-based and relatively "slow". This doesn't appear to be
as much of a concern anymore - at least this is what the chip 
& NP vendors would have us believe :) 

Best,
Nabil Seddigh


> 
> Hi,
> 
> What problem a mp2p LDP-based MPLS network is trying to solve (like the one used in RFC2547) that can't be done with pure IP forwarding?
> 
> Note: Don't tell me fast forwarding, because we can do fast IP lookup as well.
> 
> Yours,
> Shahram