O'Reilly logo

Implementing Cisco Networking Solutions by Harpreet Singh

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

User Datagram Protocol (UDP)

UDP is a protocol that provides connectionless service to the application, and sends data to the application layer as received, without worrying about lost parts of the application data stream or some parts being received out of order. A UDP packet is shown in Figure 11:

Figure 11: UDP packet structure

Since UDP provides lesser services compared to TCP, the packet has fewer fields and is much simpler. The UDP datagram can be of any length as can be encapsulated in the IP packets as follows, and has a header that is of fixed 8-byte length. The different fields in the UDP packet are discussed as follows:

  • Source ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required