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CONTINUITY OF IP CONNECTIVITY FOR A MOBILE NODE RUNNING LINUX

CONTINUITY OF IP CONNECTIVITY FOR A MOBILE NODE RUNNING LINUX. By. Aparna Gupta 2008013 Balakrishnan K 2008020 Nabila Kazmi 2008064 Smruthi R M 2008094 Sri Harsha M 2008096. Problem Statement. Description:

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CONTINUITY OF IP CONNECTIVITY FOR A MOBILE NODE RUNNING LINUX

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  1. CONTINUITY OF IP CONNECTIVITY FOR A MOBILE NODE RUNNING LINUX By Aparna Gupta 2008013 Balakrishnan K 2008020 Nabila Kazmi 2008064 Smruthi R M 2008094 Sri Harsha M 2008096

  2. Problem Statement Description: • It is well known that the cellular telephone network has the property that when a node moves to different cells, the connection stays unbroken. • The task therefore is to create an IP network system on a laptop running Linux, and maintain an unbroken IP session even as the node is moved to the range of different access points

  3. Solution • Wi-Fi link handoff mechanism (Layer 2) • Mobile-IP management mechanism (Layer 3)

  4. Layer 2 Solution DHCP Server Access Point Access Point Mobile Node

  5. Layer 2 Solution • Modification of the device driver for a Wi-Fi card in Linux which automatically changes the Access Point link based on the SNR value. • Implementation will be done for Atheros chipsets using Madwifi base code. • Allocation of unique IP to a node from all access points by getting it from a common DHCP server.(Can also be done using 802.11x server)

  6. Layer 3 Solution

  7. Layer 3 Solution

  8. Layer 3 Solution • Home Agent: Entity within a home network that performs mobility management function. • Correspondent: Node in another network that is currently communicating with the mobile node • Mobile Node: The node that is in the foreign network currently. Its address is called as the COA. • Implementation: The mobile node informs a change of IP to the home agent. The home agent, intercepts packets that are destined to the mobile node and redirect the packets that are destined to the mobile node's current location.

  9. Work done till now • Literature survey. • Device driver code compilation. • Made a small application for Wifi card.

  10. Break up of work • Mobile IP :  Nabila & Smruthi • DHCP Server and 802.1x Server: Aparna • 802.11 protocol and applications: Sri Harsha • Device drivers and overall design: Balakrishnan

  11. Thank You!

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