Over the past few years, we have learned that this focus is inconsistent with the priorities of many network managers. Most network managers are primarily concerned with maintaining control of their network resources to protect qualitative, mission critical traffic. Ironically, this usually means either disallowing or severely restricting the deployment of just the type of multimedia application that RSVP was Santitoro, et. If it were possible to better control the behavior of these applications, they would become more deployable. RSVP can be used to do so.
Application sends PATH message.
Receiver uses RESV message to request reservation of resources for transmitted traffic. Sender sends traffic regardless of the admission control decision. RSVP signaling focuses on allocating network resources rather than controlling the behavior of the sending application. This signaling can be used to convey the network's admission control decision from the receiver to the sender, in order to impact the behavior of the sender. RSVP has been adapted to address pragmatic concerns.