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[mpls] About RSVP Path and Resv messages.

  • From: Eric Osborne <eosborne@cisco.com>
  • Date: Tue, 08 Mar 2005 10:19:05 -0500
  • Cc: mpls@ietf.org
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Manodha Gamage wrote:
> Dear all,
> I am student and can some one please let me know what is the reasonable
> set up time of an LSP using the RSVP-TE. 
> As we know LSPs are set up by exchanging the Path and Resv messages
> between an ingress-egress pair.
> Therefore can we say roughly this setup time is equal to the round trip
> time between the ingress and egress?
> Please advice me, where should I refer to find such information.
> 

It'll be roughly round-trip delay plus some amount of per-hop processing
time; how long it takes to process at each hop depends on the hardware,
software, and network involved, but it should be sub-second at each hop,
and very likely only a small number of msec per hop.  To get more detail
than that, you'll have to test specific hw/sw under specific conditions.



eric

> regards
> 
> Manodha Gamage
> 
> 
> 
> 
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