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The receiver of datagram’s must send messages to each router the packets will go through requesting the appropriate priority
a. Path- Receiver must send a path message to determine which routers packets will go through going and coming
b. RESV- RESV message must be sent to each router to request priority

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Posted by snjysanjay05

A resource reservation setup protocol designed for an integrated services Internet The RSVP protocol is used by a host to request specific qualities of service from the network for particular application data streams or flows. RSVP is also used by routers to deliver quality-of-service(QoS) requests to all nodes along the path(s) of the flows and to establish and maintain state to provide the requested service.RSVP requests will generally result in resources being reserved in each node along the data path.

RSVP requests resources for simplex flows, i.e., it requests resources in only one direction. Therefore, RSVP treats a sender as logically distinct from a receiver, although the same application process may act as both a sender and a receiver at the same time. RSVP operates on top of IPv4 or IPv6, occupying the place of a transport protocol in the protocol stack. However, RSVP does not transport application data but is rather an Internet control protocol, like ICMP, IGMP, or routing protocols.

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Posted by sagitraz