P4P:P2P????????????

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P4PP2P????????????

• ??? ??,?????
• ???????????(DCIA)
• P4P??? (P4P Working Group)
• haiyong.xie_at_openp4p.net

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Outline

• Problem Statement
• Requirements and Challenges
• The P4P Framework
• Objective
• Architecture
• Performance
• P4P Working Group
• History, Structure
• Next Steps

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P2P Bandwidth Usage
CacheLogic Research Internet Protocol Breakdown
1993 - 2006

• Traffic
• Up to 60-70 of Internet traffic is contributed
  by P2P applications CacheLogic
• Random peering causes traffic spread across PoPs
  and domains
• Problems
• Increased network resource usage (e.g., using
  bandwidth of more links)
• Increased network operational costs
• Degraded performance of other applications

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Bandwidth Battle

• ISPs Approaches
• Upgrade network infrastructure
• Deploy P2P caching devices
• Terminate user connectivity
• Rate-limit P2P traffic

• P2P Countermeasures
• Use random ports
• Hide by using well-known ports
• Encrypt traffic

• Government
• Network Neutrality

The battle results in a lose-lose situation
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The Fundamental Problem

• Traditional ISP feedback/controls to application
  traffic
• Routing
• Rate control through congestion feedback (e.g.,
  packet loss)
• These are ineffective for P2P
• P2P traffic is highly dynamic and scattered, due
  to dynamic, unguided (network-oblivious) peer
  selection
• Need a mechanism for ISPs to communicate with P2P
  about network structure and policies

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Solution ?? or ?? ?

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Solution Requirements Challenges

• Efficiency
• ISPs better network utilization
• P2Ps higher performance
• End-users better experiences
• Nation less expenses in upgrading infrastructure

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Solution Requirements Challenges

• Extensibility
• Universally applicable to most P2P architectures
• Tracker-based and trackerless P2P systems
• Easily extensible to handle application-specific
  requirements
• File sharing vs. streaming,
• Commercial vs. non-commercial
• Allow easy entry of new applications

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Solution Requirements Challenges

• Scalability
• Support a large number of P2P users and networks
  in dynamic settings
• Support fine-grained feedbacks among ISPs and P2Ps

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Solution Requirements Challenges

• Economics
• Allow profit for both ISPs and P2Ps
• sustainable economical growth
• Allow equal power in the eco-system
• sustainable technological innovation
• Allow competitions, prevent monopoly

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Solution Requirements Challenges

• Privacy
• Preserve ISPs sensitive information
• Preserve P2Ps private information
• Session, content
• user IDs, user behaviors

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Standardization

• Standardization should take into account
• Sufficient space for economical growth
• ISPs can recover from financial loss
• P2P can fairly and efficiently utilize the
  network while being independent
• Sufficient space for evolution of Internet
  technologies
• Both ISPs and P2Ps can form and pursue their own
  technology paths
• Encouraging fast adoption
• Allowing and encouraging competition

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P4P

• Proactive Provider Participation in P2P
• Partnership among ISPs and P2P networks
• Framework for explicit communications among ISPs
  and P2P networks
• Pay for Performance
• Providers expose capabilities to serve demands of
  P2P networks
• P2P vendors maintain competitive advantages

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P4P Objectives

• A framework to enable better ISP and P2P
  coordination
• Guided network utilization benefits both sides
• Improve throughput / performance to P2P users
• Allow ISPs to better manage networks
• Reduce number of links transited by content
• Push traffic from undesirable (expensive) links
  to more desirable (inexpensive) links
• Reduce the need for upgrading infrastructure,
  control financial costs

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P4P Enables Efficient Delivery
Traditional CDN
P2P
P4P
Internet Transit
Regional Routers
Edge Network
More Viewers Better performance Lower cost
More Viewers Worse performance Higher cost
NETWORK AWARE P2P will reduce costs, improve
performance
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P4P Architecture
ISP A

• Providers
• Publish information via P4P Service Access Point
  (SAP)
• Applications
• Query information via P4P SAPs
• Adapt themselves accordingly

P4P SAP
P4P SAP
ISP B
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P4P ISP Benefits

• Industry Solution
• Create cooperative win-win solutions to an
  industry issue
• Solve the problem before we have to cope with the
  problem
• Carrier-Grade P2P
• Opportunity for new services
• What if fastest path from A to B is P2P?

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P4P Benefits Reduce Transit Cost
Ingress Egress
Native 13,001,419,651 22,743,712,795
P4P 3,489,097,997 10,416,737,537
Improvement 73 54
?P4P??
P4P??
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P4P P2P Benefits

• P2P Applications with P4P benefits
• Improve P2P application performance
• Video continuity of streaming
• Faster downloads for users
• Decrease incentives for ISPs to manage P2P
  traffic

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P4P Benefits Improve Download Rates
????P4P??P2P???????40? ????P4P??P2P???????300-5
00?
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P4P Benefits Summary
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??P4P????
P4P????????
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P4P Working Group History

• 06/2006 12/2006
• Dr. Xie initiated and proposed P4P, laid the
  theoretical foundations, and evaluated its
  effectiveness
• 05/2007
• Dr. Xie presented P4P results in a P2P conference
  in New York City
• 07/2007
• Dr. Xie initiated the P4P Working Group (P4PWG)
  with Laird Popkin and Doug Pasko
• 1st P4PWG meeting was held in New York City
• 08/2007 12/2007
• Expanding P4PWG coverage to telcos, P2Ps, content
  providers, router vendors, etc
• 01/2008 04/2008
• Dr. Xie initiated and led 1st large-scale field
  test, w/ Pando, Telefonica Verizon.
• Verizon/Telefonica/Pando press-released results
  and announced support for P4P
• P4P and the results were being reported in
  world-wide press
• 06/2007 08/2008
• Dr. Xie et al. initiated and led 2nd large-scale
  field tests

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P4P Working Group Structure
DCIA
P4P???
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Telco sub-group
Wireless sub-group
Hardware sub-group
Live P2P sub-group

Spec sub-group
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P4P Working Group Members
LimeWire Manatt Oversi Pando Networks
PeerApp Solid State Telefonica Group
ATT Bezeq Intl BitTorrent Cisco Systems
Comcast Grid Networks Joost
Velocix VeriSign Verizon Vuze University of
Toronto Univ of Washington Yale University
Abacast AHT Intl AjauntySlant Akamai Alcatel
Lucent CableLabs Cablevision Comcast Cox Comm Exa
Networks
Cisco Juniper Networks Huawei Microsoft Level 3
Communications Limelight Networks NBC
Universal Nokia Orange 21ViaNet
RawFlow RSUC/GweepNet SaskTel Solana
Networks Speakeasy Network Stanford
University Thomson Time Warner Cable Turner
Broadcasting UCLA
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Next Steps

• Production deployment of P4P
• OptiNetworks
• On-going trials
• File sharing Pando and Solid State Networks
• Streaming Abacast and Livestation
• IETF standardization

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(No Transcript)
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???P2P????????

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P2P????????
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P2P????????
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Domain Detecting Protocol (DDP)

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DDP????

• PPR(P2P???????,P2P Redirector)
• ???????????
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• ???????????,?????????P2P??????
• PPC(P2P??????,P2P Cache)
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• ?PPR????,??P2P???????????

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??DDP????P2P????
P2P??
Internet
DDP????
P2P??
www.ddp.org
PPR
PPC
???
DNS
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??DDP??????P2P????
www.ddp.org
PPR
www.ddp.org
PPR
www.ddp.org
PPR
???
DNS
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??DDP????P2P????
Internet
www.ddp.org
PPR
PPC
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??DDP????P2P????
Internet
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PPR??

• PPR??
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• ??????PPR????,????????????
• ??????????????,????P2P??????????peer??,???????????
  ,??peer??
• ?????PPC??????,???peer??PPC
• ??peer?????,???????????????
• ????????,?????????,????????????
• ????????

Interface to Peer
PPC control
Domain Info
DHT networking
Policy
Peer Exchange Optimizer
Interface to PPC
Interface to DHT
Interface to Controller
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PPC????

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Interface to Peer
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eMule
BT

Service Management Module
Interface to PPR
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DDP?????
Internet
PPC
DNS
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DDP???
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DDP???????

• ?????????????
• PPR
• ??????
• ???????????P2P??
• PPC
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• ??DDP??????????????????????
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• DHT????,??????DDP??????????

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DDP????
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DDP??????????

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• ???P2P??????????,????????????????
• ?????????????,DDP???????????????

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