Encapsulation of user data in a UDP datagram inside an IP packet.

In computer networking, "encapsulation" is to include data from an upper layer protocol into a lower layer protocol. This is a method of abstraction for networking by allowing different layers to add features/functionality and Pedro. Image File history File links UDP_encapsulation. ... Image File history File links UDP_encapsulation. ... User Datagram Protocol (UDP) is one of the core protocols of the Internet protocol suite. ... The Internet Protocol (IP) is a data-oriented protocol used for communicating data across a packet-switched internetwork. ... For the scientific and engineering discipline studying computer networks, see Computer networking. ... In computer networking, the upper layer protocol (ULP) refers to the more abstract protocol when performing encapsulation. ... In computer networking, the lower layer protocol (LLP) refers to the more specific protocol when performing encapsulation. ... In computer science, abstraction is a mechanism and practice to reduce and factor out details so that one can focus on a few concepts at a time. ...

For example (see image), the internet is based upon the Internet Protocol (IP — specifically IPv4) and most applications use either the User Datagram Protocol (UDP) or Transmission Control Protocol (TCP). Thus, a chunk of user data is encapsulated in a UDP datagram which is then encapsulated in an IP packet which is then sent over a data link layer protocol (e.g., Ethernet). The data link layer is responsible for physical transmission of the data; IP adds addressing of individual computers; UDP adds "application addressing" (i.e., the port specifies the service like a web or TFTP server). The Internet Protocol (IP) is a data-oriented protocol used for communicating data across a packet-switched internetwork. ... Internet Protocol version 4 is the fourth iteration of the Internet Protocol (IP) and it is the first version of the protocol to be widely deployed. ... User Datagram Protocol (UDP) is one of the core protocols of the Internet protocol suite. ... The Transmission Control Protocol (TCP) is one of the core protocols of the Internet protocol suite, often simply referred to as TCP/IP. Using TCP, applications on networked hosts can create connections to one another, over which they can exchange streams of data using Stream Sockets. ... This article does not cite any references or sources. ... Ethernet is a large, diverse family of frame-based computer networking technologies that operate at many speeds for local area networks (LANs). ... It has been suggested that this article or section be merged into Computer port (software). ... The inside/front of a Dell PowerEdge web server The term Web server can mean one of two things: A computer program that is responsible for accepting HTTP requests from clients, which are known as Web browsers, and serving them HTTP responses along with optional data contents, which usually are... Trivial File Transfer Protocol (TFTP) is a very simple file transfer protocol, with the functionality of a very basic form of FTP; it was first defined in 1980. ...

Both the OSI model and internet protocol suite use encapsulation. The Open Systems Interconnection Basic Reference Model (OSI Reference Model or OSI Model for short) is a layered, abstract description for communications and computer network protocol design, developed as part of the Open Systems Interconnection (OSI) initiative. ... The Internet protocol suite is the set of communications protocols that implement the protocol stack on which the Internet and most commercial networks run. ...

When encapsulating, the more abstract layer is called the upper layer protocol (ULP) while the more specific layer is called the lower layer protocol (LLP). In the example given, UDP is the ULP to IP while ethernet is the LLP to IP. In computer networking, the upper layer protocol (ULP) refers to the more abstract protocol when performing encapsulation. ... In computer networking, the lower layer protocol (LLP) refers to the more specific protocol when performing encapsulation. ...