WUSTL CSE 574S - Mobile IP (30 pages)

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Mobile IP



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Mobile IP

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Pages:
30
School:
Washington University in St. Louis
Course:
Cse 574s - Wireless and Mobile Networking
Wireless and Mobile Networking Documents

Unformatted text preview:

Mobile IP Chakchai So In Department of Computer science Washington University Outline Why Mobile IP Mobile IPv4 basics Issues on Mobile IP Mobile IPv6 improvement Mobility Support in IP Conclusion 01 14 19 Washington University 2 Why Mobile IP Motivation for Mobile IP TCP session need to keep the same IP address for the life of the session IP needs to change the IP address when mobile node moves to a new place Consider the IP mobility problem as a routing problem Requirement for Mobile IP Transparency Compatibility Efficiency and scalability 01 14 19 Washington University 3 Mobile IPv4 basics Mobile IP Terminology Mobile IP Functionality Mobile IP Operation 01 14 19 Washington University 4 Mobile IP Terminology Mobile Node MN Foreign Agent FA Home Agent HA Care of Address COA Foreign agent based COA Colocated COA Correspondent Node CN Security Parameters Index SPI Tunneling 01 14 19 Washington University 5 Mobile IP Functionality Agent Discovery Agent Advertisement Solicitation Move Detection Handover Lifetime based and Network Prefix Registration inform HA for COA Routing and Tunneling Encapsulation IPinIP RFC2003 Minimal encapsulation RFC2004 GRE RFC 2784 Triangle routing 01 14 19 Washington University 6 Agent Advertisement 0 7 8 15 16 23 24 31 ICMP Router Discovery Protocol Type Code Checksum IRDP RFC 1256 addresses Addr size Lifetime Type 16 Router address 1 Length 6 4 COAs Preference level 1 R Registration required Router address 2 B Busy no more registrations Preference level 2 H Home agent F Foreign agent M Minimal encapsulation G GRE Type Length Sequence number r Sent as 0 ignored on reception R B H F M G r T reserved Registration Lifetime T FA supports reverse tunneling zero or more COAs reserved Sent as 0 ignored on reception 01 14 19 Washington University 7 Registration UDP Source Port Length 0 Destination Port 434 Check Sum 7 8 Type 1 Registration Request 15 16 S B DMG r T x Home address Home agent COA 23 24 Lifetime 31 Identification Extensions



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