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Cell Relay Retreat>MPLS-OPS Archive>month:2003-Mar> msg00117



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MPLS-TE tunnel across IGP area's .

  • From: "M. ELK" <elkou141061@hotmail.com>
  • Date: Sat, 29 Mar 2003 08:35:27 +0000
  • Resent-Date: Sat, 29 Mar 2003 04:28:36 -0500
  • To: mpls-ops@mplsrc.com
  • X-OriginalArrivalTime: 29 Mar 2003 08:35:27.0982 (UTC) FILETIME=[269F08E0:01C2F5CE]
  • X-Originating-Email: [elkou141061@hotmail.com]
  • X-Originating-IP: [57.250.229.136]




As per RFC 3031

Quote
Label Distribution Peers for an Address Prefix

      3. R1 is the receive endpoint of an LSP Tunnel that is within
         another LSP, and R2 is a transmit endpoint of that tunnel, and
         R1 and R2 are participants in a common instance of an IGP, and
         are in the same IGP area (if the IGP in question has areas),
         and R1's route to X was learned via that IGP instance, or is
         redistributed by R1 into that IGP instance
Unquote

For a tunnel between a "PE and P" or "P and P" we need to have
targeted LDP between the 2 nodes at the end of the tunnel .

Taking the above quote from RFC3031 into consideration and
consider the case of tunnel between a "PE and P" or "P and P" which are not 
in the same area could we conclude that it is not
possible/valid  to set up such a tunnel ?? .

Brgds


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