Towards the Future Internet Architecture

1
Towards the Future Internet Architecture

• RFC 1287 December 1991
• D. Clark et al.
• 2002. 9.16
• Presented by Hyeeun Choi

2
Contents

• Introduction
• Five most important areas
• Routing and Addressing
• Multi-Protocol Architectures
• Security Architecture
• Traffic Control and State
• Advanced Application
• Conclusions

3
Introduction

• Internet infrastructure has continued to grow at
  an astonishing rate
• Needs and Issues in the internet change
• Its required to think about possible future
  evolution of the Internet architecture

4
Assumptions

• The TCP/IP and OSI suites will coexist for a long
  time
• The Internet will continue to include diverse
  networks and services
• Commercial and private networks will be
  incorporated
• The Internet architecture needs to be able to
  scale to 109 networks

5
Routing and Addressing (1/2)

• Problems expected
• 32-bit IP address space exhaustion
• Existing routing algorithm is not scalable for
  the number of network host
• Need for multiple route to permit variation in
  TOS and policy conformance
• Common routes, special routes

6
Routing and Addressing (2/2)

• Suggested Solution
• Extended Address
• Reuse the 32bit field in different parts of the
  net
• Expand the address space to 64bit
• How to migrate to the new scheme?
• Scalable Routing Architecture
• Use AD as the unit of aggregation for routing
• How ADs should be aggregated into still larger
  routing elements?

7
Multi-Protocol Architecture (1/3)

• Support of both the TCP/IP and OSI suites
• making the problem harder for the good of
  mankind
• New Definition of the Internet
• IP-based IP address
• Application-based (Naming-based)
• DNS, directories
• Larger Internet community
• More dynamic operational Internet

8
Multi-Protocol Architecture (2/3)

• Process-Based Model
• Core Internet architecture are kept
• Homogeneity
• IP connectivity
• Link sharing
• Physical resources are shared
• Issues management, non-interference,
  coordination, fairness among multiple,
  non-interacting protocols
• Application Interoperability
• Arrange for essential semantics of applications
• Communication among applications

9
Multi-Protocol Architecture (3/3)

• Hybridization/Integration
• Desirability of integrating similar elements from
  different Internet protocol architectures
• Reduce the variability and complexity of the
  Internet System
• Facilitate the Absorption of new stuff into the
  Internet

10
Security Architecture (1/2)

• Philosophical Guidelines
• Simplicity, testability, trust
• Protocol and Cryptographic method
• Desired Security Service
• Authenticable distinguished names
• Integrity
• Cryptographic algorithm
• Solution to safely storing secret information

11
Security Architecture (2/2)

• Proposed Actions
• Security Reference Model
• Privacy-Enhanced Mail (PEM)
• Distributed System Security
• Host-Level Security
• Application-Level Security

12
Traffic Control and State (1/2)

• Assumption
• The Internet will need to support performance
  guarantees for particular subsets of the traffic
  
• Principles
• Default service best-effort datagram delivery
• Mechanism of router can be separated
• Forwarding path
• Control computation
• New extension must operate in a highly
  heterogeneous environment
• Multicast distribution is essential

13
Traffic Control and State (2/2)

• Technical Issues
• Resource Setup
• Resources need to be reserved in each router from
  source to destination
• Resource Setup via Inter-AD routing
• Resource and route binding Process
• Perform together or independently
• Tradeoff between complexity and efficiency
• Alternative multicast models
• Proposed actions are further research on
  technical Issues

14
Advanced Applications (1/2)

• To develop the application
• Common data Formats that will be used across the
  network are needed
• Tools that the applications can use to move the
  data easily are needed
• Common Interchange Formats
• How to represent data in packets
• Text
• Image, Graphics, Video, Audio/Analog
• Display, Data Objects

15
Advanced Applications (2/2)

• Data Exchange Methods
• Store and Forward
• Standard means of providing an information flow
  to sometimes-connected hosts
• Multicasting should be included
• Global File System
• Inter-Process Communications
• Data Broadcast
• Database Access
• Traffic control and state and security area need
  to be solved

16
Conclusions

• "The Internet" is to succeed and grow, it will
  require specific design efforts in each areas.
• Even small changes take a long time to deploy
• Do it right the first time