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Computer networks final presentation
- 1. Mobile IP (MIP) ● Daniel Ayvar ● Joseph Liddell ● Jimmie Shepherd ● Daniel Roldan
- 2. Mobile IP Technical Definition ● Protocol designed to allow mobile devices to be able to move from networks and still keep its permanent ip address
- 3. Life without Mobile IP ● Let’s say you’re on a call with your boss and walking down the street ● All of a sudden you are disconnected! ● Now you have to re-dial, how annoying.
- 4. Life without Mobile IP ● According to www.statista.com, 4.68 billion people have a cellular device in 2019 ● So mobile IP is very important for everyone!
- 5. What is Mobile IP ? ● Mobile IP is what is responsible for a device to be able to travel and still retain its service
- 6. What is Mobile IP ? ● Real world example: Me and my phone take a trip from Chicago to New York
- 7. What is Mobile IP ? ● My phone switches from tower to tower, but thanks to mobile IP I am still able to have service in New York.
- 8. Mobile IP Terminology Mobile Node/ Mobile device A device like a cell phone, laptop or router, whose point of location and attachment may change. It is assigned a permanent IP address where all the packets will be sent.
- 9. Mobile IP Terminology Home Network The subnet which contains the home address of the mobile node and the home agent. This is the mobile node original point of attachment.
- 10. Mobile IP Terminology Home Agent Responsible for forwarding packets to the mobile node. This router keeps the original IP address information for the mobile node. It also intercepts packets for the mobile node when the node is on a foreign network.
- 11. Mobile IP Terminology Foreign Network Any Network other than the mobile node home network that a mobile node attaches itself to.
- 12. Mobile IP Terminology Foreign Agent A router used on the foreign network that is configured for the Mobile IP. It contains care of address for the mobile nodes.
- 13. Mobile IP Terminology Care of Address The mobile node uses this address for communication when away from the home network. It is a temporary address that allows packets to be sent to the mobile node. 168.126.127.12
- 14. Mobile IP Steps When first connected to the a network, a permanent IP address is assigned to the Mobile device. That network is then considered as the Mobile device's home network At this point, packets are routed directly to the mobile node Mobile Permanent IP: 189.160.10.20
- 15. Mobile IP Steps When transferring between networks, a home agent is created in the home network to intercept all traffic directed toward the mobile node In the new network (or foreign network) a foreign agent is assigned to the mobile node Home Agent Mobile Permanent IP: 189.160.10.20 Foreign Agent
- 16. Mobile IP Steps The foreign network then updates the home network on its current location. The foreign agent is assigned and establishes a care-of address that routes packets to the mobile node Home Agent Care-of Address Foreign Agent Mobile Permanent IP: 189.160.10.20
- 17. Mobile IP Steps Packets sent to the mobile node are intercepted by the home agent and encapsulated with the care-of address in the header The packet is forwarded to the foreign agent. It's then decapsulated and the original packet is forwarded to the mobile node Foreign Agent Server Internet Home Agent
- 18. Mobile IP Steps When the mobile node sends a packet, it doesn't need to send the packet through home network. Instead, it sends it straight to the destination Foreign Agent Server Internet Home Agent
- 19. Mobile IP Steps Smooth Handoff When transferring between foreign networks, the current foreign agent updates the former agent temporary until all necessary devices are updated with the new care-of address Current Foreign Agent IP: 189.160.10.20 Former Foreign Agent Home Agent
- 52. Questions?
- 53. Sources Perkins, Charles E. "Mobile IP." IEEE Communications Magazine (1997). Perkins, Charles E. "Mobile ip." International Journal of Communication Systems 11.1 (1998): 3-20. Perkins, Charles E., and David B. Johnson. "Route optimization for mobile IP." Cluster Computing 1.2 (1998): 161-176. Redi, J., and P. Bahl. "Mobile ip: A solution for transparent, seamless mobile computer communications." Fuji-Keizai’s Report on Upcoming Trends in Mobile Computing and Communications (1998).