RSVP Refresh Overhead Reduction by State Compression

Document Type Expired Internet-Draft (rsvp WG)
Authors Lixia Zhang  , Andreas Terzis  , Lan Wang 
Last updated 2000-03-16
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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.)