Now we have a lot of familiar network protocol from the most recent knowledge is understood now ip communication based on the communication protocol have different performance at different levels, such as at the network layer and the hardware layer has a different expression.
Now the main school have TCP / IP (Transport Control Protocol / Internet Protocol, Transmission Control Protocol / Internet Protocol) history goes back to the era of the Internet predecessor -ARPAnet. In order to achieve the interconnection between different networks, the US Department of Defense developed a TCP / IP architecture and protocols from 1977 to 1979. TCP / IP is a combination of a set of a plurality of sub-protocol has made professional use, these sub-protocols include TCP, IP, UDP, ARP, ICMP , etc. TCP / IP, with its low cost, rapid development of multi-platform communication between secure and routability and other advantages, and became the standard protocol of the Internet. In the 1990s, TCP / IP has become the first choice for local area network protocol, the latest operating system (such as Windows7, Windows XP, Windows Server2003, etc.) has the TCP / IP communication protocol as its default installation.