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Cell Relay Retreat>MPLS WG Archive>month:2001-Aug> msg00351



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Question in creating entries in ifStackTable...

  • From: Thomas Nadeau <tnadeau@cisco.com>
  • Date: Mon, 27 Aug 2001 16:52:28 -0700
  • Cc: "'mpls@uu.net'" <mpls@UU.NET>


>         "draft-ietf-mpls-lsr-mib-07.txt" says that the MPLS interface
>         should be above an "Underlying Layer..."  in the ifStackTable.
>
>         In our case we can start mpls over an IP interface.  Can the
>         "Underlying layer..." be the IP interface ?

         Yes.  The "underlying layer" refers to whatever
layer/interface MPLS runs over. Some implementations
conceptually run MPLS over the L2 interface, others
stack it over the IP interface.

         --tom