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Cell Relay Retreat>MPLS WG Archive>month:2002-Feb> msg00193



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LDP - VPN

  • From: Eric Rosen <erosen@cisco.com>
  • Date: Mon, 25 Feb 2002 11:26:03 -0500
  • cc: "Miguel Angel Chana" <machana@cisco.com>, mpls@UU.NET, ppvpn@ppvpn.francetelecom.com
  • User-Agent: EMH/1.14.1 SEMI/1.14.3 (Ushinoya) FLIM/1.14.3(Unebigoryōmae) APEL/10.3 Emacs/21.1(sparc-sun-solaris2.6) MULE/5.0 (SAKAKI)


Providing a  layer 3 VPN  requires the distribution of  routing information.
To distribute routing information, one  must use a routing protocol.  LDP is
not a routing protocol.  BGP is. 

For example, BGP has things like a decision process, to ensure that for each
address prefix, a  non-looping set of routes is chosen.   If you think about
sites that are  multihomed, have backdoor connections, etc.,  etc., the need
for this becomes apparent.

  • References:
    • LDP - VPN
      • From: "Arun Kumar Dheena" <arunkumar.dheena@wipro.com>