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Re: Fwd: basic question on MPLS

  • From: Ajay Simha <asimha@cisco.com>
  • Date: Tue, 26 Nov 2002 04:38:32 -0500
  • Cc: rogerw@nordlink.com, mpls-ops@mplsrc.com
  • Resent-Date: Tue, 26 Nov 2002 06:06:54 -0500
  • To: sthaug@nethelp.no
  • User-Agent: Mutt/1.4i

On Tue Nov 26 09:39:34 2002, sthaug@nethelp.no wrote:
> > MPLS allows for switching  packets instead of routing them, so it is 
> > faster.
> 
> This may have been one of the original arguments for MPLS - but is
> it true today? If so, it would be useful to name specific platforms.
> 
> I have seen several statements from Cisco people I trust which say
> that MPLS label lookup/forwarding is *not* faster than IP address
> lookup/forwarding on Cisco equipment - neither on their software
> based platforms nor on the ASIC based ones.

At least it is not noticeably faster :) And of course imposition/disposition is in fact
slower than plain IP. IMHO it is the decoupling of forwarding and routing that allows
apps like TE/VPNs that makes MPLS more attractive.

-ajay
> 
> Steinar Haug, Nethelp consulting, sthaug@nethelp.no
> 
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