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RSVP Refresh Overhead Reduction by State Compression

Document type: Expired Internet-Draft (rsvp WG)
Document stream: IETF
Last updated: 2000-03-16
Intended RFC status: Unknown
Other versions: (expired, archived): plain text, pdf, html

IETF State: WG Document
Document shepherd: No shepherd assigned

IESG State: Expired
Responsible AD: (None)
Send notices to: No addresses provided

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found here:


As a soft-state protocol, RSVP specifies that each RSVP node sends peri- odic RSVP messages for each existing RSVP session. The overhead due to such periodic state refreshes goes up linearly with the number of active RSVP sessions. One can reduce the overhead by using a longer refresh period, which unfortunately leads to longer delays in re-synchronizing RSVP state in face of packet losses. To overcome the dilemma, this specification describes the use of a 'state-compression' approach to soft-state protocol refreshes. In the absence of state changes this compression mechanism has a constant message overhead while retaining the soft-state nature of RSVP.


Lixia Zhang <>
Andreas Terzis <>
Lan Wang <>

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid)