Subject: What scheduling for RSVP traffic control ?

From: Simon Pietro Romano <[email-masked]>
Date: Mon, 01 Mar 1999 22:15:38 +0100

Hi all,

we're making some studies and experiments on the effectiveness of
different
scheduling policies in an RSVP-based network environment.
We'd really appreciate  your feedback on the following issues:

- we argue that, in an RSVP-based environment, in which QoS requests
   are made on a per-flow (or per/application) basis, a WFQ scheduling
   discipline is more indicated than a CBQ one to meet bandwidth
management
   requirements. CBQ, in fact, is is well suited to scenarios (perhaps
diffserv scenarios ?)
  in which the total  bandwidth is divided among different
organizations, which in turn
  manage their resources on the basis of  local policies;
- furthermore, as far as we could notice, no current release of  RSVP
relying on
   CBQ traffic control modules makes a differentiation in the way
guaranteed  and
   controlled load services are treated, in the sense that no
computations are made
   relating to ADSPEC object updating in the case where there exist
specific bounds
   on the delay which the packets belonging to a GS flow can tolerate.

Thanks in advance ,

Simon Pietro Romano and Raffaele D'Albenzio
--
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                    Simon Pietro Romano
              Universita' di Napoli Federico II
                 Computer Science Department
        Phone: +39 081 7682897 -- Fax: +39 081 7682942
                e-mail: [email-masked]
          http://www.grid.unina.it/individual/sprom

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