1. The Challenge of P2P Communications
Henry Sinnreich
CTO
Pulver.com
March 15, 2006

2. March 15, 2006

3. Sample of P2P Traffic Distribution
March 15, 2006

4. P2P Traffic on RCN Cable Network DSL Reports Forum, Jan 28, 2006
“90% of upstream traffic was being consumed by p2p”
March 15, 2006

5. Major P2P Projects P2P SIP Open DHT New IETF WG
Several P2P SIP projects and Internet Drafts
(P2P IP PBX: Avaya and Peerio, prestandard)
Open DHT
OpenDHT is a publicly accessible distributed hash table (DHT) service. Clients of OpenDHT do not need to run a DHT node in order to use the service.
Planet Lab infrastructure
645 nodes over 310 sites. Academic, industrial, and government institutions
March 15, 2006

6. Overlay Network March 15, 2006 Application Transport Network Data link
Physical
March 15, 2006

7. P2P Overlay Network Applications
DNS replacement (though less efficient)
Distributed databases
Application layer multicast
Content distribution: SW, audio/video (TV)
P2P computation
Events
RT communications: Presence, IM, A/V
Back to the end-to-end Internet as it was initially designed
March 15, 2006

8. IP L5: Application Layer
P2P Communications
SIP applications
VoIP, Video
P2P Applications
Presence IM
File Transfer
IP L5: Application Layer
DHT Layer
Overlay Network
TCP/IP
Internet
March 15, 2006

9. VoIP infrastructure challenged by P2P
DNS, ENUM
SIP registrar and proxy servers,
Presence servers
Component servers:
Announcements, voice mail, media servers, conference servers
Session border controllers
Softswitches: Local switch emulation, PBX
Media servers
Network elements for QoS
Policy servers
Network management
Voice quality monitoring probes
Network engineering
System integration
VoIP network IT (OSS) systems for all the above
The sum of all = IMS
March 15, 2006

10. The Cycle of Complexity
March 15, 2006

11. March 15, 2006

12. References
March 15, 2006

13. The Internet Is The Service
Quote from Jon Peterson, IETF Area Director
Questions?
March 15, 2006