The IP protocol creates all IP packets.
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The protocol field, in the IP header, identifies what kind of data is in the IP packet - the upper-layer protocol. For example, if the code is 6, that means that the data is a TCP segment.
That's IP (Internet Protocol), or any other similar layer-3 protocol.That's IP (Internet Protocol), or any other similar layer-3 protocol.That's IP (Internet Protocol), or any other similar layer-3 protocol.That's IP (Internet Protocol), or any other similar layer-3 protocol.
That means that if an IP packet is sent, there is no guarantee that it will arrive. If it doesn't arrive, IP will do nothing to re-send it. If it is necessary to re-send lost packets, higher-level protocols (usually TCP) take care of that.
TCP/IP is a very common type of network protocol.TCP stands for Transmission Control Protocol and is used to create data connections between computers. Primarily, it is a "connection oriented protocol" in a sense that every connection goes through a three-way-handshake (SYN, ACK/SYN, ACK) to establish a connection before data is transmitted. Once the connection is established, each data packet that is received by the destination computer triggers an ACK packet (short for Acknowledge) to say that the data was received without error. That ACK packet will not be sent if the data packet is not received or if the data packet does not match the CRC (Cycle Redundancy Check). If the computer that sent the data packet does not hear that ACK packet, it sends the data packet again. The majority of traffic on the internet is TCP.TCP can be easily compared to UDP (User Datagram Protocol) which does not create a "connection" or ask for a acknowledgment packet and therefor typically has less overhead and latency. With UDP, data is sent to an address without worry for whether or not it reached its destination successfully. It is often used for streams such as internet radio/audio or video.IP stands for Internet Protocol. IP is the framework that lets computers address and communicate with each other. Most commonly known is an IP Address. An IP Address is a set of numbers given to a computer so that it may communicate with other computers with IP addresses. A common analogy is the phone system. To talk to someone, you simply dial their number.For example, to submit this answer, my computer made a TCP connection to wiki.answers.com's IP address and sent a data stream containing my writings. After each packet my computer sent, wiki.answers.com sent an acknowledge packet back.
IP stands for Internet Protocol and it is is a numerical label that is assigned to devices participating in a computer network that uses the Internet Protocol for communication between its nodes.