Towards a Unified Internet Control Architecture Rolf Winter - - PDF document
Towards a Unified Internet Control Architecture Rolf Winter Trilogy Project EuroView2008 A Unified Control Architecture Resource Reachability Load-dependent control multipath Re-feedback Traffic engineering Commercial & social
Rolf Winter – Trilogy Project EuroView2008
July 21-22, 2008 EuroView2008 1
Traffic engineering Load-dependent multipath Re-feedback
Reachability Resource control Commercial & social control
July 21-22, 2008 EuroView2008 2
Reachability Commercial & social control Resource control
July 21-22, 2008 EuroView2008 3
WWW phone email UDP TCP IP ETH 802.11 radio copper fibre
WWW phone email UDP TCP IP ETH 802.11 radio copper fibre NAT IntServ Mobility Routing IPSec Multicast
Applications Technologies
July 21-22, 2008 EuroView2008 4
And what not
Goals Thrusts
Unified architecture Joint technical, economical and social control
Illustrations and Examples
July 21-22, 2008 EuroView2008 5
Designed as a best effort service infrastructure Dominant infrastructure today - data, voice, video, TV,…
End user concerns
Security, privacy
Operational (business) concerns
Address spaces, routing limitations, debuggability, 5-nines
Technical challenges
Mobility, security
Lack of experimental opportunities
Experiment at scale (GENI) New services, new features
Innovation is driven by people and applications (iPhone…)
Problems are fundamental, no more incremental patches
July 21-22, 2008 EuroView2008 6
Architecture changed over 40 years
Mutual evolution of Internet and society
Reconsideration necessary
Critically review principles, check validity Example: end-to-end principle: middleboxes; Spam/DDoS, …
Derive new / update design principles
We know how to forward packets on a router How do we allocate resources? Who controls resources – and how?
Absolute control? Delegate control? Coordinate control?
July 21-22, 2008 EuroView2008 7
Reachability
Inter-domain routing: more functionality, more devices Convergence time are too high NATs, middleboxes break
Resource Control
End-system based (TCP) Today abuse
Commercial/social control
Stakeholders with different interests Tussle over control
Reachability Commercial & social control Resource Control
July 21-22, 2008 EuroView2008 8
TCP Multi-conn. P2P, IDC Too slow Unfair Discriminating Port-selective packet dropping DPI (deep packet Inspection) Skype Obfuscate
Discriminating Secret???
July 21-22, 2008 EuroView2008 9
Among stakeholders
Here: resource owners vs resource users Can also be among users, etc
Evolution – hard to predict
How? No cookbook recipe!
July 21-22, 2008 EuroView2008 10
Original Internet
Piece of art Beautiful Innovative
Trilogy goal
Embrace! Unified control Simplicity Flexibility At run time
Internet today
Torn by tussles Ossified Patched
July 21-22, 2008 EuroView2008 11
Technical, business, social, legal
phone email UDP TCP IP ETH 802.11 radio copper fibre
July 21-22, 2008 EuroView2008 12
Applications Technologies
Current Internet architecture maps 1 point in the “tussle” space
Technical, business, social, legal
Future must embrace multiple areas
EuroView2008 13
MAC PHY
MAC PHY
MAC PHY
MAC PHY MAC PHY
IP IP IP
Tussle space
July 21-22, 2008 EuroView2008 14
MAC PHY
MAC PHY
Tussle space
July 21-22, 2008 EuroView2008 15
TCP Too slow Unfair Discriminating Multi-conn. P2p, IDC Port-selective packet dropping DPI (deep packet Inspection) Skype Obfuscate
Discriminating Secret???
July 21-22, 2008 EuroView2008 16
Design principles for a tussle-aware architecture
Where did they occur, and how they were resolved Lessons learned
Define preliminary architecture (ongoing work)
Tussle-aware Encorporates novel (technical ideas)
Discuss preliminary architecture with business leaders
Get early feedback
Take feedback to improve approach
July 21-22, 2008 EuroView2008 17
Develop a unified control architecture for the Future Internet
Scalable, dynamic and robust Operational and business requirements
Develop and evaluate new technical solutions for key Internet control elements
Reachability & resource control
Assess commercial and social control aspects
internal & external strategic evaluation
congestion control load-dependent, multi-path topology discovery, reachability routing policy economic drivers traffic engineering
TRILOGY
re-feedback
reachability mechanisms resource control business