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Mobile IP

Learn about the Mobile IP technology, which helps handle IP addresses in mobile communications. Understand the mechanism, terminology, and benefits of Mobile IP. Discover how it solves routing inefficiencies and security issues.

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Mobile IP

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  1. Mobile IP Mar.14,’03 B89901002 黃品甄 B89901018 范哲瑋

  2. 前言 • 為什麼要介紹Mobile IP 因為行動通訊是近來所熱門的話題 然而Mobile IP是一種配合行動通訊幫助處理IP的技術

  3. Outline • Introduction to Internet Protocol • Terminology in Mobile IP • The Mechanism of Mobile IP • Discussion and Conclusions

  4. Introduction to IP • IP 是什麼 IP 就是Internet Protocol 顧名思義就是一種協定 主要負責分割封包 及 擇路

  5. IP的位置及特色 • IP位於OSI分層中的網路層 網路層負責把封包送到目的地 • IP 有著 不可靠 盡力傳送 的特色 • 最重要的特色 IP address 也是一樣有架構分層性的喔

  6. 想一想 • 如果我們去旅行了 是不是就收不到給我們的信呢 • 所以就要有一個方法 也就是Mobile IP

  7. 介紹Mobile IP的名詞(1) • Mobile Host/Node • Home Network Home Address Home Agent

  8. 介紹Mobile IP的名詞(2) • Foreign Network Foreign Address Foreign Agent • Care of Address

  9. How Mobile IP Works • 取得Care-of Address(Discovering the Care-of Address)

  10. How Mobile IP Works • 取得Care-of Address(Discovering the Care-of Address) • 註冊Care-of Address (Registering Care-of Address)

  11. How Mobile IP Works • 取得Care-of Address(Discovering the Care-of Address) • 註冊Care-of Address (Registering Care-of Address) • 認證Authentication

  12. How Mobile IP Works • 取得Care-of Address(Discovering the Care-of Address) • 註冊Care-of Address (Registering Care-of Address) • 認證Authentication • 傳送封包到Care-of Address(Tunneling to the Care-of Address)

  13. Discovery of Care-of Address • Agent Advertisement every broadcasting period • Agent Solicitation if the mobile node does not wish to wait for a period

  14. Registering of the Care-of Address • Binding : Home Address, Care-of Address, Registration Lifetime

  15. Authentication • Binding Update: When Changing Position or Registration LifeTime Expires • Binding Update require a “key” • The Identification Field contains: • Timestamps • 32-bit Random Number

  16. Tunneling to the Care-of Address

  17. Problems facing Mobile IP • Routing Inefficiencies : Triangular Routing of Data • Security Issues: FireWall

  18. Prospect of IPv6 • No need for Foreign Agent • No Triangular Routing Problem • Stateless AutoConfiguration • Neighbor Discovery • Directly Binding with the Node in communication

  19. Conclusion • Interoperability testing sessions have indicated that the Mobile IP specification is sound, implementable, and of diverse interest throughout the community.

  20. Reference • “Mobile Networking Through Mobile IP” by Charles E. PerkinsSun Microsystems • http://kiki.ee.ntu.edu.tw/mmnet1/public_html/mip.htm • http://www.ccl.itri.org.tw/about/ccl_enews/CCL_e9106133K.htm

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