What isRSVP

RSVP or ReSerVation Protocol is a communication protocol that is designed to allocate bandwidth for real-time transmission. Its purpose is to enhance audio and video traffic and improve the user’s experience by eliminating unwanted skips and hesitations.

As the Internet traffic for audio and video continues to grow, RSVP has been approved by IETF for its effectiveness in prioritizing real-time traffic. For instance, in video conferences, RSVP can help guarantee that there is sufficient bandwidth for each participant, ensuring that there are no delays or interruptions in communication.

Key benefits of using the RSVP protocol

  • Allocates bandwidth for real-time transmission
  • Eliminates unpleasant skips and hesitations in audio and video traffic
  • Improves the user’s experience in video conferences and other real-time communications
  • Prioritizes real-time traffic for guaranteed bandwidth allocation

Why is RSVP important?

Without RSVP, real-time audio and video traffic compete with other types of internet data for bandwidth, which can lead to congestion, delays, and ultimately lower the quality of the audio and video transmissions. RSVP ensures that real-time traffic has priority access to the available bandwidth, thereby guaranteeing a smoother and more seamless experience for users.


How does RSVP protocol work?

When an RSVP-capable router receives a request to reserve bandwidth, it checks if there is enough bandwidth available to fulfill the request. If there is, it sets aside the requested bandwidth for the communication session. This reservation lasts only for the duration of the session, and when the session is over, the reserved bandwidth is released.

Does RSVP protocol work for both audio and video?

Yes, RSVP is designed to work for both audio and video traffic in real-time communication sessions.


RSVP is an essential protocol for real-time transmissions, especially for audio and video traffic, as it guarantees the required bandwidth for a smooth and uninterrupted communication session. It enhances the quality of user experience, and therefore it is an effective solution to consider for businesses and organizations that rely heavily on real-time communication.

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