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Lecture TCP-IP protocol suite - Chapter 27: Mobile IP

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Mobile communication has received a lot of attention in the last decade. The interest in mobile communication on the Internet means that the IP protocol, originally designed for stationary devices, must be enhanced to allow the use of mobile computers, computers that move from one network to another.

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Nội dung Text: Lecture TCP-IP protocol suite - Chapter 27: Mobile IP

  1. Chapter 27 Mobile IP McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  2. CONTENTS •  ADDRESSING •  AGENTS •  THREE PHASES •  AGENT DISCOVERY •  REGISTRATION •  DATA TRANSFER •  INEFFICIENCY IN MOBILE IP McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  3. 27.1 ADDRESSING McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  4. The IP addresses are designed to work with stationary hosts because part of the address defines the network to which the host is attached. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  5. Figure  27­1 Host address and care­of address McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  6. Mobile IP has two addresses for a mobile host: one home address and one care-of address. The home address is permanent; the care-of address changes as the mobile host moves from one network to another. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  7. 27.2 AGENTS McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  8. Figure  27­2 Home agent and foreign agent McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  9. When the mobile host and the foreign agent are the same, the care-of address is called a co-located care-of address. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  10. 27.3 THREE PHASES McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  11. Figure  27­3 Remote host and mobile host communication McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  12. 27.4 AGENT DISCOVERY McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  13. Figure  27­4 Agent advertisement McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  14. Mobile IP does not use a new packet type for agent advertisement; it uses the router advertisement packet of ICMP, and appends an agent advertisement message. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  15. Mobile IP does not use a new packet type for agent solicitation; it uses the router solicitation packet of ICMP. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  16. 27.5 REGISTRATION McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  17. Figure  27­5 Registration request and reply McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  18. Figure  27­6 Registration request format McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  19. Figure  27­7 Registration reply format McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
  20. A registration request or reply is sent by UDP using the well-known port 434. McGraw­Hill ©The McGraw­Hill Companies, Inc., 2000
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