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Performance Validation of Mobile IP Wireless Networks

Performance Validation of Mobile IP Wireless Networks. Syed Shahzad Ali Muhammad Saqib Ilyas Advisor: Dr. Ravi Pendse. Agenda. Wireless Networking Introduction Problems : IP Addresses, Location, Routing Solution: Mobile IP Protocol Ns2 test-bed and results Router’s Lab setup

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Performance Validation of Mobile IP Wireless Networks

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  1. Performance Validation of Mobile IP Wireless Networks Syed Shahzad Ali Muhammad Saqib Ilyas Advisor: Dr. Ravi Pendse

  2. Agenda • Wireless Networking Introduction • Problems : IP Addresses, Location, Routing • Solution: Mobile IP Protocol • Ns2 test-bed and results • Router’s Lab setup • Test-bed and result • Future Work

  3. Goals • Performance comparison of Mobile IP based networks on the basis of the results gathered from ns2 simulator and by working in the Router’s LAB in the real world. • Validate the Effects of Mobility on the Transport Layer • Have ns2 and router’s lab test-bed ready for future research

  4. What is Wireless Networking? • Wireless networking is the use of Radio Frequency (RF) technology to connect workstations in a Local Area Network (LAN) or LAN's in a Wide Area Network (WAN). • Using this technology allows Ethernet speeds with limited or no wired connections. It transmits and receives information through the air.

  5. What is Mobile IP? • MIP defines how MNs change their Point Of Attachment to the Internet without changing their IP addresses • Each MN is always identified by its home IP address • HA sends datagrams for MN through a tunnel to the COA • No protocol enhancement is required in other hosts or routers

  6. What if Node Moves • Routing decisions are based upon the network-prefix portion of the IP Destination Address 10.10.0.1/16 Router 130.10.1.0/24

  7. D 130.1.x.x Internet A B C Route Next 130.1.x.x A Route Next 130.1.x.x B D 130.1.1.1 Problem Due to Mobility Mobile Node 130.1.x.x CN 130.1.1.1 Internet A B C Route Next 130.1.x.x B Route Next 130.1.x.x A CN ?

  8. Mobile IP Process • Agent Discovery to find Agent • Home agent and foreign agents periodically send Agent Advertisement Messages • They also respond to solicitation from mobile node • Mobile Node selects an agent and uses Care-Of-Address for further communication

  9. Care-Of-Address • IP Address associated with a mobile node that is visiting a foreign network • It generally changes every time MN moves from one foreign network to another • A FA COA can be any one of the FA’s IP Address • A FA COA can be shared by many MNs simultaneously

  10. Mobile IP Process (Contd.) • Registration • Mobile Node registers its COA with home agent either directly or through foreign agent. • Home agent then sends a reply back to mobile node via FA about successful COA registration • Each mobility binding has a negotiated lifetime limit • To continue further working in FN, registration must be done within lifetime

  11. Mobile IP Process (Contd.) • Return to Home Network • Mobile node deregisters with Home Agent • Sets COA to its permanent IP Address • Lifetime = 0 ; /* means deregistration */ • Deregistration with foreign network is not required. It expires automatically • Simultaneous registrations with more than one COA is allowed (for handoff)

  12. Overview of Mobile IP Functionality CN • 1. MN discovers agent • 2. MN obtains COA (Care Of Address) • 3. MN registers with HA • 4. HA tunnels packets from CN to MN • 5. FA forwards packets from MN to CN 5. 4. FA HA 1. and 2. 3. MN

  13. Encapsulation/ Tunneling • Home Agent Intercepts mobile node’s datagrams and forwards them to COA • Home Agent tells all hosts to send mobile node’s datagram to it • Home Agent then send it to FA via Tunnel • Decapsulation: Datagram is extracted by FA and sent to mobile node

  14. Tunnel Encapsulation/Tunneling Correspondent Node IP Cloud Home Network New Network/Foreign Network Mobile Node Foreign Agent Home Agent Mobile Node

  15. TCPSource FA2 HA FA1 MN Network Scenario

  16. Test Bed Setup Flow

  17. Comparison of Attributes

  18. Results NS2

  19. Work that can be done using NS2 • In our work the correspondent node was stationary. A study can be done where CN is also mobile. • UDP Protocol could be tested and the performance could be analyzed. • Real time traffic using RTP may be realized

  20. Now What? Up We Go!

  21. Equipment • Cisco 2600 series routers • Cisco 3660 routers • Cisco Aironet 340 Wireless bridges

  22. Test bed 130.10.x.x/24 100.0.0.0/24 is subnetted, 9 subnets R 100.10.14.0 [120/3] via 100.10.10.1, 00:00:01, FastEthernet0/0 R 100.10.15.0 [120/4] via 100.10.10.1, 00:00:01, FastEthernet0/0 R 100.10.12.0 [120/2] via 100.10.10.1, 00:00:01, FastEthernet0/0 R 100.10.13.0 [120/2] via 100.10.10.1, 00:00:01, FastEthernet0/0 C 100.10.10.0 is directly connected, FastEthernet0/0 R 100.10.11.0 [120/1] via 100.10.10.1, 00:00:01, FastEthernet0/0 C 100.10.18.0 is directly connected, FastEthernet0/1 R 100.10.16.0 [120/3] via 100.10.10.1, 00:00:02, FastEthernet0/0 R 100.10.17.0 [120/4] via 100.10.10.1, 00:00:02, FastEthernet0/0 Server HA – 2600 FA1 – 2600 FA2 – 2600 MN – 2600 R1 – 3660 R2 – 3660 Server, Client – PC running Linux 12.x R1 R2 13.x 11.x 16.x 14.x FA2 HA FA1 17.x 15.x 10.x MN 15.x Client

  23. Mobile Node in Foreign Network 1 Mobile Node: 100.0.0.0/8 is variably subnetted, 3 subnets, 2 masks M 100.10.15.2/32 [3/1] via 100.10.15.2, 00:00:17, FastEthernet0/0 C 100.10.10.0/24 is directly connected, FastEthernet0/0 C 100.10.18.0/24 is directly connected, FastEthernet0/1 M* 0.0.0.0/0 [3/1] via 100.10.15.2, 00:00:17, FastEthernet0/0 Home Agent: 100.0.0.0/8 is variably subnetted, 9 subnets, 2 masks M 100.10.10.88/32 [3/1] via 100.10.14.2, 00:00:45, Tunnel0 R 100.10.14.0/24 [120/2] via 100.10.11.7, 00:00:04, Ethernet0/1 R 100.10.15.0/24 [120/3] via 100.10.11.7, 00:00:04, Ethernet0/1 . . . Mobile Tunnels: Tunnel1: src 100.10.10.1, dest 100.10.10.88 encap IP/IP, mode reverse-allowed, tunnel-users 1 IP MTU 1460 bytes Path MTU Discovery, mtu: 0, ager: 10 mins, expires: never outbound interface Tunnel0 HA created, fast switching enabled, ICMP unreachable enabled 0 packets input, 0 bytes, 0 drops 0 packets output, 0 bytes Tunnel0: src 100.10.10.1, dest 100.10.14.2 encap IP/IP, mode reverse-allowed, tunnel-users 1 IP MTU 1480 bytes Path MTU Discovery, mtu: 0, ager: 10 mins, expires: never outbound interface Ethernet0/1 HA created, fast switching enabled, ICMP unreachable enabled 0 packets input, 0 bytes, 0 drops 47 packets output, 9020 bytes Server 12.x R1 R2 13.x 11.x 16.x 14.x FA2 HA FA1 17.x 15.x 10.x 10.x 15.x MN Client

  24. How’d we do that? • Modified netperf code to get network latency • Wrote shell program to configure wireless bridge data rate • Wrote shell program to configure router interface delay and queue length

  25. And the results are….

  26. It’s not over yet! • Study the implementation of different radio propagation models in NS-2 • Completely automating the simulation by writing some more shell programs to integrate the existing shell programs.

  27. Thank you very much for attending the presentation Questions?

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