AKARIAKARINew Generation Network New Generation Network

ArchitectureArchitecture

2008. 11. 10.SeungHo Lee

OutlineOutline

Introduction to AKARI Project Current Problems and Future Requirements Design Principles Basic Configuration of the New Architecture

• Optical packet switching and optical paths• Identifier/locator split internetworking architecture

Testbed

Introduction to AKARI ProjectIntroduction to AKARI Project

“a small light in the dark pointing to the future”

Objective• to design the network of the future• to implement a new generation network by 2015 • to pursue an ideal solution from a clean slate• to create an overarching design of what the entire future network

should be

Introduction to AKARI ProjectIntroduction to AKARI Project

AKARI Project Schedule

Introduction to AKARI ProjectIntroduction to AKARI Project

Roles of the Network Architecture

Ref. Design from a Clean Slate Ref. Design from a Clean Slate

Initiatives for Recreating a New Architecture

Current ProblemsCurrent Problems

Problems with the Internet Architecture

Future RequirementsFuture Requirements

Societal Considerations• Peta-bps class backbone network, 10Gbps FTTH, e-Science

• 100 billion devices, machine to machine (M2M), 1 million broadcasting stations

• Principles of competition and user-orientation

• Essential services (medical care, transportation, emergency services), 99.99% reliability

• Safety, peace of mind (privacy, monetary and credit services, food supply traceability, disaster services)

• Affluent society, disabled persons, aged society, long-tail applications

• Monitoring of global environment and human society

• Integration of communication and broadcasting, Web 2.0

• Economic incentives (business-cost models)

• Ecology and sustainable society

• Human potential, universal communication

Future RequirementsFuture Requirements

Design Requirements• Large capacity• Scalability• Openness• Robustness• Safety• Diversity• Ubiquity• Integration and simplification• Network model• Electric power conservation• Extendibility

Design PrinciplesDesign Principles

KISS principleKISS principle

Crystal Synthesis• the design must incorporate "crystal synthesis,“ a kind of

simplification of technologies to reduce complexity even when integrating functions.

Common Layer• One of the reasons for the success of the Internet is that the IP

layer is a common layer. • The design of the new generation network architecture will have

a common layer will eliminate redundant functions in other layers to degenerate functions in multiple layers.

End-to-End• A network should not be constructed based on a specific

application or with the support of a specific application as its objective.

Reality Connection PrincipleReality Connection Principle

Separation of physical and logical addressing• physical and logical addressing should be separated.• resource discovery mechanisms in P2P, the coexistence of

various routing in ad-hoc networks, and data-centric concepts in sensor networks suggest the future importance of addressing.

Bi-directional authentication• authentication information must be located so that the particular

individual or entity controls the information. Traceability

• Individuals or entities must be traceable to reduce attacks on the network.

• Anonymity should also be provided at the same time as a means of protection.

Sustainable and Evolutionary PrincipleSustainable and Evolutionary Principle

Self-* properties• It is important for all entities within the network to operate in an

adaptive, self-distributed, and self-organizing manner.• the hierarchical structure must become a more flexible structure.

In other words, a self-emergent network must be designed. Scalable, distributed controls

• To sufficiently scale controls even in large-scale or topologically varying networks, it is important to introduce self-organizing controls or pursue autonomous actions at each node.

Robust large-scale network• The new generation network architecture must be designed to

handle simultaneous or serious failures that may occur.

Sustainable and Evolutionary Principle Sustainable and Evolutionary Principle (cont’)(cont’)

Controls for a topologically fluctuating network• It is important to develop a flexible network for which topology

changes are also taken into consideration. Controls based on real-time traffic measurement

• Because current Internet routing control determines routes by using fixed costs to find the lowest cost, it is difficult to deal with any network congestion that occurs suddenly.

• Real-time traffic-based network control is important. Openness

• Future topics of interest include network modeling so that requests from users can be conveyed to the network as well as control plane or protocol design.

• Network monitoring for ensuring safety is also important as the network becomes more open.

Basic Configuration of the New Basic Configuration of the New ArchitectureArchitecture

Components of the new generation network architecture• Optical packet switching and optical paths

• Optical access

• Wireless access

• PDMA

• Transport layer control

• Identifier/locator split internetworking architecture

• Layering

• Security

• QoS routing

• Network model

• Robustness control

• Layer degeneracy

• IP simplification

• Overlay network and Network virtualization

Optical packet switching and optical Optical packet switching and optical pathspaths

Optical Packet Switching

Lightpath Network

Optical packet switching and optical Optical packet switching and optical pathspaths

Integration of Optical Packets and Optical Paths• Both physical resources and control mechanisms must be

common.• Infrastructure resources can be assigned more flexibly according

to service usage conditions.

Identifier/locator split internetworkingIdentifier/locator split internetworking

Conventional IP address• Functions

– node identifier in the application and transport layers– location identifier in the network layer

• Problems – mobility and multihoming management– network renumbering– security and privacy– scalable routing– traffic engineering

Identifier/locator split internetworkingIdentifier/locator split internetworking

Layered identifier and locator architecture

Identifier/locator split internetworkingIdentifier/locator split internetworking

Protocol stack in identifier/locator split architecture

Identifier/locator split internetworkingIdentifier/locator split internetworking

Communication Procedure

TestbedTestbed

Requirements• Use the results of research and development• Guarantee flexibility• Provide a diverse communications environment• Provide the latest existing technologies• Provide a secure research environment• Enable the usefulness or effectiveness of new ideas to be

proven• Enable proof of operability with actual services• Enable a common architecture to be assembled and shared

⇒ Design using network virtualization technology

ReferencesReferences

Document• New Generation Network Architecture AKARI Conceptual

Design (ver1.1) – Oct. 2008

PPT• AKARI Architecture Design Project in Japan – Tutorials, AsiaFI

Aug. 2008

http://akari-project.nict.go.jp