RSVP is the acronym for the French expression “Répondez S’il Vous Plait” which in Portuguese means "Answer please". It is very common to see this acronym on invitations to events such as weddings, where confirmation of attendance is essential.
It is used to request confirmation, or not, of the guest's presence at an event, which can mean "Please Confirm Attendance”.
The acronym RSVP is usually printed at the end of the invitations, for some events, followed by the phone number or email address. company responsible for organizing the event, in order to open the way for the guest to confirm their presence. The number of confirmed guests will guide the company responsible for organizing the party to plan, adapting the number of tables, food, drinks, etc.
The use of initials of a French expression arose from the practices of French labels, during the reign of Louis XIV, which influenced much of the West. In the nineteenth century, French was the language of refinement and high society.
RSVP protocol
Resource Reservation Protocol is a communication protocol (set of specifications that control and enable a connection, communication and transfer of data between systems) which allows the user to request the reservation of a certain bandwidth for data transmission in the Internet.
RSVP is a protocol designed for integrated internet services, allowing the applications themselves to request from the network the resources needed for their various services.
RSVP is a model where each receiver is responsible for choosing its own level of resource reservation, initializing the reservation and making it active for as long as necessary.
RSVP is not a routing protocol, but it works in conjunction with them. It is used to request a specific quality of service from the network. The protocol works both on user machines and on routers, being responsible for establishing and maintaining the conditions for the requested service.
RSVP does not carry data, it is just a control protocol, acting at the same level as other protocols, such as ICMP and IGMP, or in routing protocols. The RSVP protocol was designed to ensure that older architectures are compatible with the new system.