National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [1] MOBILE IP Under the guidance of Mr. N. Srinivasu By Jiten Mishra EC (Lecturer Of Electronics & Communication)

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [2] Features of IPv6 128 bit address. Address Auto configuration –An IPv6 node configurs it address automatically by using the router advertisements and it’s interface id. Extension Headers –Routing header For route optimization –Destination Options header For mobile node originated datagrams

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [3] Mobile IPv6 Terminology Mobile Node The node which moves between the networks. Home Agent The node in the Home network which knows the information(like current location...etc) about the mobile node’s, which belongs to that network. Correspondent Node Any node which contacts the Mobile node.

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [4] Mobile IPv6 Terminology (Continued) Home Address Address of the Mobile Node in the Home Network Care-of Address Addess of the Mobile Node in the Foreign network Home Link The link on which a mobile node's home subnet prefix is defined. Standard IP routing mechanisms will deliver packets destined for a mobile node's home address to its home link.

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [5] Foreign Link Any link other than the mobile node's home link. Binding The association of the home address of amobile node with a care-of address for that mobile node.

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [6] Mobile IPv6 Operation Mobile IPv6 operation can be divided in to 3 parts  Discovering the care-of address  Registering the care-of address  Tunneling to the care-of address

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [7] Mobile IPv6 Operation (cont...) Discovering the care-of address A Mobile Node(MN) performs address autoconfiguration to get its care-of address Resistsering the care-of address 1.The MN registers its care-of address with its home agent by sending a Binding Update request to it’s Home Agent (HA) 2.HA sedns a Binding Acknowledgement to the corresponding mobile node.

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [8] Mobile IPv6 basic operation Correspondent Node Mobile Node Bidirectional tunnelling Route optimization IP tunnel Mobile Node Routing option Home Agent

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [9] Mobile IPv6 address updates Mobile Node Home Agent Binding Update Ack Mobile Node needs to update the Home Agent on it’s current location –Binding Update message –The Home Agent keeps this binding for future use Mobile Node

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [10] Triangle Routing

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [11] Route Optimization MN may bind BU in pkts to CN, allowing CN to directly send pkts to MN –CN receive a pkt with BU in it, then update its Binding Cache –Just like any IPv6 node, every time it attempt to sent pkts, it check its Binding Cache: If there is an entry with CoA of the destination, use the CoA Otherwise, use the origin address

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [12] Route Optimization

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [13] –While away from home, an MN selects one router and one subnet prefix advertised by that router to use as the subnet prefix in its primary care-of address –To wait for the periodically sent Router Advertisements Movement Detection

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [14] Dynamic Home Agent Address Discovery It is possible that when the mobile node needs to send a Binding Update to its home agent to register its new primary care-of address, the mobile node may not know the address of any router on its home link that can serve as a home agent for it. ICMP Home Agent Address Discovery Request message ICMP Home Agent Address Discovery Reply message

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [15] Internet Home Agent 3 Correspondent Node Mobile Node Router Home Link Link A Link B Link C (1)Binding Update to Home-Agents anycast address (2)Binding Acknowledgement including the Home Agents List; rejects the registration request Home Agent 1Home Agent 2 Home Agents List Preference Value Home Agent 39 Home Agent 12 Home Agent 2-3 Larger Preference value indicate higher availability of the home agent

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [16] Conclusions Mobile IPv6 is –An efficient protocol for handling mobility with IPv6 –To minimize the control traffic needed to effect mobility

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [17] THANK YOU

National Institute Of Science & Technology Mobile IP Jiten Mishra (EC ) [18]