What Is User Datagram Protocol?

What Is User Datagram Protocol?

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  What’s In ItFor You?  What Is User Datagram Protocol?  Features of User Datagram Protocol  UDP Header Format  Working of the UDP Protocol  Applications of the UDP Protocol  UDP vs TCP
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  What Is UserDatagram Protocol?
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  What Is UserDatagram Protocol? The User Datagram Protocol, is an unreliable and connectionless with, process to process communication model and is part of the Transport Layer Protocol in the OSI model for providing internet services. Sender Receiver UDP Format Connectionless Service
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  Features of UserDatagram Protocol?
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  Features of UserDatagram Protocol The UDP protocol provides various features for efficient transmission of data and information for applications with minimum data loss.
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  Features of UserDatagram Protocol Transport Layer Protocol UDP is part of the transport layer of the OSI model, is an unreliable and based on the best- effort delivery options for the data. Internet Layer Network Access Layer Transport Layer Application Layer Original Model No Acknowledgment is received. No Retransmission for corrupt data. Best-Effort Delivery
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  Features of UserDatagram Protocol Connectionless Transmission UDP protocol does not establish a virtual path for data transmission, so each data datagram, uses a different path to reach the destination side. Sender Receiver Connectionless Model
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  UDP Header Format
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  Header format forUser Datagram Protocol The UDP datagram, is composed of two parts, UDP Header of size 8 bytes and the data that is encapsulated is attached to the header. Source Port Destination Port Total Length Checksum Header 8 bytes UDP Data UDP Datagram User Datagram Header Format 16 bits 16 bits
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  Header format forUser Datagram Protocol  Source Port Number – It is a 16 bit value, required to identify the port transmitting data.  Destination Port Number – Used to identify the port number, that will be receiving the data.  Total Length – This value is used to specify the length of the UDP packet including the UDP header.  Checksum – This is a 16-bit field and is used as an optional attribute. It is left to the application to check the accuracy of the transmitted data and applied to the entire UDP packet (datagram).
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  Working of theUDP Protocol
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  Working of UserDatagram Protocol Message Sender Side UDP Header Data IP Header Data Frame Header Data Receiver Side Message UDP Header Data IP Header Data Frame Header Data
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  Applications of theUDP Protocol
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  Applications of UserDatagram Protocol Some of the features of the UDP protocol that proves to be beneficial for the network: It is used by processes that have flow and error control mechanism, such as TFTP (Trivial File Transfer Protocol). Provides faster transmission of data, as no pre-established virtual path is needed for transfer, and is used in real-time services and live communication.
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  UDP vs TCP
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  UDP vs TCP AttributeUDP TCP Reliability Data reaching its destination cannot be guaranteed. Is reliable as it guarantees delivery of data to the receiver side. Acknowledgment Signal No acknowledgment is issued from either of the side. Acknowledgment is shared between both the sides. Connection Mode UDP is a connectionless mode of service, with no virtual path. TCP is a connection – oriented protocol, as virtual path is needed for communication. Error Check System Basic checksum system is only used for error check. It uses extensive error-check service, along with error flow control mechanism.
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