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presented by:
Amit Saxena

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Mobile Internet Protocols
Introduction
 Wireless Technology becoming hotter.
 Transition towards Mobility over past 20 years.
 CISCO IOS has integrated new Technology on Mobile IP which provides USER freedom to roam.
 Network Mobility is provided by Mobile IP
Mobile ip overview
 Routing based on stationary IP Address in IP networks.
 It is an extension to IP proposed by IETF that enable users to keep same IP Address while roaming.
 Without Mobile IP
1. Node must change its IP address while roaming.
2. Host specific routes must be propagated.
Terminology
 Mobile node
 Home agent
 Foreign agent
Relation Between Different Components
Protocol overview
 Agent Discovery
 Registration
 Tunneling
Two Ways To Acquire Care Of Address
 Foreign Agent Care of Address.
 Collocated Care of Address.
Message Format and Protocol Extensibility
 The extension used in Mobile IP is as shown below which is not used in simple IP.
How Mobile IP works
 AGENT DISCOVERY
1. Advertisement
2. Solicitation
 REGISTRATION
 TUNNELING
1. General Tunneling
2. Packet Forwarding
3. Reverse Tunneling
General Tunneling
Packet Forwarding
 This path is topographically incorrect .
 Ingress Filtering occurs