Optimizing Federated Presence with View Sharing

Document Type Expired Internet-Draft (simple WG)
Authors Jonathan Rosenberg  , Steve Donovan  , Kathleen McMurry 
Last updated 2008-11-03 (latest revision 2008-07-14)
Replaces draft-rosenberg-simple-view-sharing
Stream Internet Engineering Task Force (IETF)
Expired & archived
pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Presence federation refers to the exchange of presence information between systems. One of the primary challenges in presence federation is scale. With a large number of watchers in one domain obtaining presence for many presentities in another, the amount of notification traffic is large. This document describes an extension to the Session Initiation Protocol (SIP) event framework, called view sharing. View sharing can substantially reduce the amount of traffic, but requires a certain level of trust between domains. View sharing allows the amount of presence traffic between domains to achieve the theoretical lower bound on information exchange in any presence system.


Jonathan Rosenberg (jdrosen@cisco.com)
Steve Donovan (stdonova@cisco.com)
Kathleen McMurry (kmcmurry@cisco.com)

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