Advantages of Using RSVP
Admissions Control RSVP not only provides QoS, but also helps
other applications by not transmitting when the network is busy.
Network Independence/Flexibility RSVP is not dependent on a
particular networking architecture.
Interoperability RSVP works inside existing protocols and with other
QoS mechanisms.
Distributed RSVP is a distributed service and therefore has no central
point of failure.
Transparency RSVP can tunnel across an RSVP-unaware network.