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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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