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DCCN

Connection Establishment in TCP

Connection Establishment In TCP:- Connection Establishmet in TCP, TCP transmits data in full-duplex mode. When two TCPs in two machines are connected, they are able to send segments to each other simultaneously. This implies that each party must initialize communication and get approval from the other party before any data are transferred. Three-Way Handshaking The […]

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DCCN

Process-to-process Communication

Process-to-process Communication The transport layer is responsible for process-to-process communication. Port Number : the port number defines one of the processes on this particular host lANA Ranges The lANA (Internet Assigned Number Authority) has divided the port numbers three ranges: well known, registered, and dynamic (or private) Well-known ports: The ports ranging from 0 to […]

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DCCN

Datagram

Datagram Packets in the IPv4 layer are called datagrams. A datagram is a variable-length packet consisting of two parts: header and data. The IPv4 datagram format is below. Version (VER) :  4-bit field defines the version of the IPv4 protocol.  Header length (HLEN) :  This 4-bit field defines the total length of the datagram header […]