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Cell Relay Retreat>MPLS WG Archive>month:2003-Jan> msg00159



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Vpns vs explicit null label

  • From: Eric Rosen <erosen@cisco.com>
  • Date: Wed, 29 Jan 2003 13:34:30 -0500
  • cc: francis.arts@alcatel.be, mpls@UU.NET
  • User-Agent: EMH/1.14.1 SEMI/1.14.3 (Ushinoya) FLIM/1.14.3(Unebigoryōmae) APEL/10.3 Emacs/21.2(sparc-sun-solaris2.8) MULE/5.0 (SAKAKI)


Alia> What we  really want is  just an explicit  null, which means  "pop off
Alia> this label and then forward based on whatever's underneath". 

If  what's underneath  is  not MPLS,  then  the label  you  just popped  off
provides the only clue to what is underneath.