Subject: Re: RSVP and RAS messages...

From: Bob Braden <[email-masked]>
Date: Sun, 1 Oct 2000 18:04:36 -0700 (PDT)

*> From [email-masked] Thu Sep 28 14:33:11 2000
  *> From: Supriya Saripalli <[email-masked]>
  *> To: "Rsvp (E-mail)" <[email-masked]>
  *> Subject: RSVP and RAS messages...
  *> Date: Thu, 28 Sep 2000 14:25:02 -0700
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  *> Hi all,
  *> 
  *> Could anybody of you let me know if theres any significance of RAS messages
  *> in the QoS routing i.e. for example in the Signalling protocol like RSVP..
  *> 
  *> Since RAS channel is used to convey the registration,admission and status
  *> messages and bandwidth changes in between H323 end points..
  *> So was wondering if it plays a role in the path messages in RSVP protocol
  *> for requesting th e bandwidth....
  *> 
  *> Thanks in advance,
  *> 
  *> Supriya
  *> Clarent Corp.
  *> 
  *> 
RSVP handles only the low-level application-independent signaling
necessary to plant state in the routers.  In complex applications
like H.323, I would expect there would be an application-specific
(the app being H.323 in this case) signaling protocol at work.
This app-specific protocol would operate between the ends of
the session, without appearing at the intermediate routers.
RSVP has the task of spreading the final QoS state across
the data path.

Bob Braden