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RSVP and LDP comparison

  • From: Matt Squire <mattsquire@acm.org>
  • Date: Sat, 29 Sep 2001 12:50:22 -0400
  • CC: "'mpls@uu.net'" <mpls@UU.NET>


RSVP and LDP are two incredibly different protocols with a different
purpose.  

LDP can be used to establish LSPs along the routed paths.  RSVP-TE (I
assume you mean RSVP-TE) is used to establish traffic engineered LSPs
along explicitly defined paths or paths that satisfy some other
constraint (QoS, bandwidth, etc.).  RSVP-TE is not suprisingly much more
complex - it has a much harder job to perform.  

> 
> Can anybody pl pass on light about comparison and complexity involved in "
> RSVP and LDP w.r.t the processing overhead , protocol wise , concept wise ,
> implementation wise  etc ".
> Any pointers are appreciated.