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TCP/IP vs. Mobile IP TCP/IP is an abbreviation for Transmission Control Protocol/Internet Protocol. This protocol uses several protocols, including two main protocols: TCP and IP, which are built into the UNIX system. TCP and IP were developed by the Department of Defense (DOD) research project to connect various kinds of networks designed by various companies into one global network: the internet. Even the networks that use other protocols differ from TCP/IP, also support TCP and IP protocols. TCP/IP use multilevel architecture, which describes distinctly what each protocol is responsible for.
For example, TCP and UDP support high-level service functions of data transmission for network programs. Both of them are based on IP while transmitting data. IP is responsible for forwarding packets based on a four byte destination address (namely, the IP number). TCP verifies correct delivery of information from client to server, whereas IP moves packet or data from node to node. TCP/IP assigns a certain unique IP address to every computer / workstation /organization in the world that has access to internet network.
The IP address is a four byte value. It is expressed by a decimal number (0 - 255) and each decimal number is separated by a period. Example of IP address can be 130. 163. 62. 251 There are several protocols (the next generation) closely related to TCP/IP: IP version 6. They are as follows: IP NAT (the IP Network Address); IPSec (the IP Security protocol set); Mobile IP (the IP adapted for mobile devices) Although TCP/IP is the most successful protocol, it wasnt primarily designed for mobile devices and computers. TCP/IP can be successfully used for computers that are rarely moved, however, the mobile devices require different IP capabilities while they are moved from one network to the other. Some of mobile devices use Wireless Networks and need completely different approach.
In such a way, the Mobile IP was created in order to satisfy the needs of mobile devices, providing them with full IP capabilities. Lets again revert to TCP/IP protocol in order to find out the differences and similarities between TCP/IP and Mobile IP. First of all, standard IP addresses are divided into two groups: network ID and host ID. A network identifies defines which network a host is one, whereas a host identifies defines the hosts within a network. However, the IP address is tied to the certain network where the computer is located.
As far as standard computers rarely change place of location, it doesnt seem to be a problem, whereas the mobile device changes their attachment point to networks. This inevitably results in breakage of system of routing based on standard TCP/IP protocol because if the device changes its location, information is sent to the old IP addresses that are not able to be delivered by conventional means. These were preconditions for creating a special IP for mobile devices. Such mobile IP protocol was defined in RFC 2002, than updated to RFC 3220 and, recently, to RFC 3344.
While Mobile IP works as a standard TCP/IP protocols, it has several peculiar features: The mobile device can change network while continuing to use their existing IP address; IP addresses are assigned in the same way as while using TCP/IP protocol, and no routing or new addressing required; The Mobile IP can work both with devices using Mobile IP and TCP/IP as well; Layer transparency; Limited hardware changes; Scalability, which means you can change the networks while Mobile IP allows it for arbitrary number of networks; Security: the Mobile IP requires authentication processes There are several technologies compete Mobile IP. One of them is the service provided by Cellular Digital Packet Data (CDPD), the dominant wireless WAN. CDPD provides with its own IP mobility service. There are few commercial implementations of Mobile IP: FTP software, the company that combines the foreign and home agents into one integrated windows application as part of Secure Client 3. 0. The other approach was integrated by Telxon. Corp that integrated foreign and home agents directly into Aironet Wireless LAN access points.
IPv 6 has several new features that were made to improve routing efficiency. IPv 6 can allow internet nodes to associate the name of mobile node with its care of address. Besides, it can send the packets directly to foreign agent. Two other improvements are IPv 6 Stateless Address Autoconfiguration (RFC 1971) and Neighbor Discovery for IP Version 6 (RFC 1970) that provide us with new feature so as the mobile node can get a care of address while eliminating the requirement for foreign agents. IP Authentication Header (RFC 1826) makes sure that data from the mobile node is authentic.
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Research essay sample on Tcp Ip Mobile Devices
