Transcript Future Internet: A clean slate design?

The Future Internet: A clean-slate
design?
Nicholas Erho
• Current internet architecture cannot fulfill the
current demands.
– The original list of design goals does not address
the contemporary demands.
– Proposed solutions are only partial solutions to
each of the challenges.
Future Internet Challenges
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Security
Mobility
Network Management
Reliability and Availability
Problem Analysis
Scalability
Quality of Service
Security
• Demand
– Everyone is concerned about the lack of security.
• Current Solution
– Add security by securing each individual protocol.
• Problem
– The composition of two secure components does not
guarantee secure resulting system.
• Cause
– Designed to place significant functionality on
vulnerable end systems.
– Designed to rely on trusted cooperating systems.
Mobility
• Demand
– More support for mobile technology and applications.
• Current Solution
– Break routing hierarchy.
– Use another IP address.
• Problem
– Breaking routing threatens scalability and IP filtering.
– Using another IP address requires fundemental redesign or
has a high efficiency impact.
• Cause
– Internet naming is based on an address hierarchy to
maintain scalability.
Network Management
• Demand
– Reliability and Availability
• Users want and need service as least as reliable as the POTS network, as internet access
is very much a crucial role in both business and private life.
– Problem Analysis
• Current internet debugging tools are limited, researchers and administrators need a
more sophisticated toolset.
– Scalability
• There is still some question about the scalability of some aspects of the current
architecture.
• Current Solution
– Unresolved.
• Cause
– Distributed management design.
– Lack of “resource use” measurement tools.
– Lack of understanding of how to set up the “control plane” in such a way the
network is reliable, manageable, scales, and is debuggable.
Quality of Service
• Demand
– It is unclear of how and where to integrate different
levels of QoS into architecture.
• Current Solution:
– Well studied and several solutions exist.
• Problem
– Management, configuration, policies, charging, and
inter-provider setups of such services.
• Cause
– Packet switching design.
– Collaboration of networks.
Internet Redesign
• Two ways to evolve a system:
– Incremental: A system is moved from one state to
another with incremental patches.
– Clean-slate: The system is redesigned from scratch
to offer improved abstractions and/or
performance, while providing similar functionality
based on new core principles.
• For the last 30 years the internet has
successfully used the incremental approach.
– Problems
• People are unable or unwilling to experiment with
current architecture.
• Original designed principles from which the internet
architecture was built no longer meet the current
requirements and since these designed principles are
foundational they are hard to change.
• Integration of new technologies.
– Solution
• Clean-slate approach using experimentation for the
evaluation of creative new network architecture ideas
based on current technology and demands.
Possible Outcomes
• Most Conservative: Learn that the current
Internet architecture is the “best” possible
solution.
• Most Radical blueprint for the future Internet.
Clean-slate Plan
1. Research into new network architectures.
2. Building an experimental facility.
Benefits of Clean-Slate Design
• Applications and services can take advantage
of enhanced capabilities and technology.
• Enable currently unimaginable applications.
• New economic models.
Conclusion
• Current internet design cannot meet current
demands and incremental changes will not
improve matters.
• Future internet designs requires
experimentation and measurement for
evaluation and comparison.
References
1. Feldmann, Anja. “Internet Clean-Slate Design:
What and Why?” ACM SIGCOMM, 2007.
2. Fisher, Darleen. “US National Science
Foundation and the Future Internet Design.”
ACM SIGCOMM, 2007.
3. Spyropoulos, Thrasyvoulos. “Future Internet:
Fundamentals and Measurement.” ACM
SIGCOMM, 2007.
4. Keshav, S. “Why Cell Phones Will Dominate the
Future Internet.” ACM SIGCOMM, 2005.