RSVP will check and repeat reservations at regular intervals. By this process, RSVP can adjust and alter the path between RSVP end systems to recover from router changes. If the wait time between when signal elements are sent and when they arrive varies, the real-time traffic will no longer be synchronized and may fail. When signal elements drop or arrive too late lost audio causes distortions with noise or crackle sounds. The lost video causes image blurring, distortions, or blackouts.
Flows travel from a set of senders to a set of receivers.
The flows can be merged or left unmerged, and the method of merging them varies according to the attributes of application using the flow. This is the traffic for a single transport layer session or network layer flow that crosses a given interface. This conversation is called from the source and destination address, protocol type, port number, or other attributes in the relevant communications layer. A unicast transmission involves a host sending packets to a single host. RSVP describes these reservations as having certain algorithmic attributes.