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IP v4 VS IP v6


  IP v4


TCP/IP  - Transminssion Control Protocol / Internet Protocol is an official protocol for the internet, Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and also guarantees that packets will be delivered in the same order in which they were sent.


The Internet Protocol Suite was originally developed by the Defense Advanced research Projects Agency, from the originally from the ARPANET ,itís stands for Internet Protocol Version 4, it Ďs the most common used version in the internet Protocol.Internet protocol works by breaking up data into datagrams for transfer across almost every layer of  medium (LAN,MAN,WAN) , the datagrams are then reassembled at the destination. The internet protocol implements two basic functions:  addressing and fragmentation.



  IP V6 or IP ng IP (next generation)  is a latest IP version to replace IP v4 in a very near future , in this version the only protocol that change is at the network layer. ICMP v4 becomes ICMP v6, IGMP and ARP are merge into IGMP v6 and RARP is deleted.

IP v6 can accommodate a larger number of users , in v6 the packet format has been simplified .The new version support authentication, data integrity and confidentiality at the network layer , itís also designed to handle transmission at real time data such as audio and video and can carry data from other protocols , IP ng also can handle congestion and route discovery better than the current version ( IP V4) .





IPv4 uses a 32 bit(4 byte) binary address

IP v6 uses 128 bit(16 Byte) binary address

Could support possible 4,294,967,296 addresses

Could support more addresses than could be used

Uses Header checksum

No Header checksum used

No security

Built in security for authentication and encryption

No prevention of fragmentation

Prevention of intermediate fragmentation of datagrams



Supportís authentication, data integrity and confidentiality at the network layer