Presence Interdomain Scaling Analysis for SIP/SIMPLE

Document Type Expired Internet-Draft (simple WG)
Authors Avshalom Houri  , Edwin Aoki  , Sriram Parameswar  , Tim Rang  , Vishal Singh  , Henning Schulzrinne 
Last updated 2015-10-14 (latest revision 2009-08-27)
Stream Internet Engineering Task Force (IETF)
Intended RFC status Informational
Expired & archived
pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired (IESG: Dead)
Action Holders
Consensus Boilerplate Unknown
Telechat date
Responsible AD Gonzalo Camarillo
IESG note Ben Campbell is document shepherd
Send notices to (None)

This Internet-Draft is no longer active.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


This document analyzes the traffic that is generated by presence subscriptions between domains and shows that the amount of traffic can be extremely large. This document also analyzes the effects of a large presence system on the memory footprint and the CPU load. Approved and in-work optimizations to the Session Initiation Protocol are analyzed, considering the possible impact on the load. Separate documents contain the requirements for optimizations and suggestions for new optimizations.


Avshalom Houri (
Edwin Aoki (
Sriram Parameswar (
Tim Rang (
Vishal Singh (
Henning Schulzrinne (

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