Aspect Oriented Router

Transcription

1 Aspect Oriented Router Research Proposal by Tzilla Elrad Sufyan Almajali The project is partially supported by an NSF grant 1

2 What are the problems? We all know what highly coupled code feels like: Make a minor change over here, and suddenly things start acting funny over there,and over there, and... So how do we avoid this? 2

3 Next-Generation Networks Capabilities Evolvability Ubiquity Scalability Reliability QoS Adaptability Security Autonomicity 3

4 NGN Architecture More Complicated Network Components 4

5 Network Components 1. Network Hosts ( End systems) 2. Network Core ( Routers and other devices) 3. Network Communication links 4. Network Protocols 5

6 Router and its Main Function Route data packets Path selection Packet Switching Call setup 6

7 New Functions to do for the Routers QoS Translate network addresses Tunneling Act as firewalls and do packets filtering Packet dropping policies Differentiated Services and Support QoS Support troubleshooting mechanisms and logging Authentication 7

8 Other Services and Functions Compression Encryption Load balancing Fault tolerance and backup lines Dial-in concentration Server DHCP service DNS service HTTP service for configuration 8

9 Different challenges Router in backbone network: speed and reliability Router in enterprise network: support a variety of protocols and services, a low cost per port, a large number of ports, more adaptability Router in access network support a variety of protocols and services, a large number of heterogeneous high speed ports, more adaptability 9

10 Router For NGN Need to add Extra Flexibility to Router Design Solution: Use general purpose hardware Move most of Router functions to Software 10

11 Why Software Router? Better Evolvability Better Adaptability Better Security and Reliability Better Autonomicity 11

12 Router Design Related Work 1. Router Plugins System (Washington University ) 2. Active Networking: Active Node Transport System (MIT) 3. Active Networking: SwitchWare (University of Pennsylvania) 4. The Click Router (MIT) 12

13 The Click Router Implemented on commodity PC hardware using C++. Performance: 64-byte packets at around 400,000 packets per second (204.8 Mbps). Faster than many commercial routers (enough to handle several T3 lines) with far less cost. 13

14 Other Networking Devices IP Router, Ethernet Switch, and Firewalls WAN Switches Wireless Gateways and Wireless nodes 14

15 Which Software Technology to Use? Monolithic Programs 15

16 Modular Programming Module 1 Module 2 16

17 Object-Oriented Design 17

18 AOSD: Identifying Cross-Cuts Cross-cut Concern

19 AOSD: Defining Aspects Aspect 19

20 AOSD: Weaving Aspects Aspect Weaver

21 Dynamic Aspect Oriented C++ We have implemented our first version of Dynamic Aspect Oriented C++. It supports Dynamic Weaving at run-time. It supports high flexible design capabilities. Dynamic Weaving can help in dynamic adaptability of code, protocols, policies and services. 21

22 AOSD Current Research and applications Development of AOSD languages Development of AOSD models and frameworks (language independent approach). Development of AOSD design and modeling tools. AOSD applications 22

23 AOSD IIT Research and Leadership Member of AOSA Steering Committee member for the AOSD conferences AOSD Frameworks AOSD in Concurrent Systems AOSD Patterns AOSD in Operating Systems. AOSD with UML and Automatic Code Generation. AOSD Router AOSD for pervasive computing AOSD for dynamic adaptability 23

24 Aspect Oriented Router Research Steps 1) Select Router Characteristics 2) Build AOSD platform for our AO router Dynamic Aspect Oriented C++ AO Network Management Protocol 3) Design Router using AOSD technology 4) Testing and Experiments 5) Comparison with Other Systems 24

25 Dynamic Aspect Oriented C++ Prepared for Networking devices and applications High Performance Software Extreme Modularity for better Evolvability Dynamic code, service, policy and protocol Adaptability for better Security, Reliability, Ubiquity and Autonomicity 25

26 Conclusion Aspect Oriented Software Development offers the needed capabilities for next-generation networks Expensive technology changes can by avoided by AOSD Dynamic Aspect Oriented C++ supports modular flexible system designs with dynamic adaptability capabilities 26

27 Industry activities at AOSD March Chicago Keynotes Invited Talks Practitioner Reports Tutorials Workshops Exhibitions 27

28 Presentations Keynotes by Grady Booch and David Thomas Invited Talks by leading experts Technical reports from AOSD users What worked, what didn t Best practices, Lessons learned Case Studies Business impact of AOSD 28

29 Tutorials Learn about leading AOSD implementations Often presented by the creators Learn best practices and traps Leading AOSD industry experts will be sharing their experiences Learn where is AOSD headed for and prepare yourself to leverage it The leading edge and the bleeding edge 29

30 Industry Focused workshops Practical applications of AOSD Challenges faced in AOSD commercialization Adoption strategies 30

31 Exhibitions Interactive Demos showcasing AOSD tools Systems using AOSD Book signing with authors 31