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* The Resource
ReSerVation Protocol (RSVP) is a Transport layer protocol designed
to
reserve resources across a network for an integrated services Internet.
* RSVP does not transport application data but is rather an
Internet control protocol, like ICMP, IGMP, or routing protocols.
* RSVP provides receiver-initiated setup of resource
reservations for multicast or unicast data flows with scaling and robustness.
* RSVP can be used by either hosts or routers to request or
deliver specific levels of quality of service (QoS) for application data
streams or flows.
* RSVP defines how applications place reservations and how
they can relinquish the reserved resources once the need for them has ended.
* RSVP operation will generally result in resources being
reserved in each node along a
path.
* RSVP is not itself a routing protocol and was designed to
interoperate with current and future routing protocols.
* RSVP by itself is rarely deployed in telecommunications
networks today, but the traffic engineering extension of RSVP, or RSVP-TE, is
becoming more widely accepted nowadays in many QoS-oriented networks.
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