ip data broadcast uses the ip protocol and is based on the DVB standard to transmit data streams.
Internet Protocol Address (English: Internet Protocol Address, also translated as Internet Protocol Address), abbreviated as IP Address (English: IP Address), It is a digital label assigned to an Internet Protocol (IP) device that a user uses to access the Internet. (Recommended learning: PHP video tutorial)
Common IP addresses are divided into two categories: IPv4 and IPv6, but there are also other less commonly used small categories.
The IP address is a unified address format provided by the IP protocol. It assigns a logical address to each network and each host on the Internet to shield the differences in physical addresses.
1. Internet architecture
A TCP/IP Internet provides three sets of services. The lowest layer provides connectionless transport services and provides the basis for services at other layers. A reliable transport service in the second layer provides a high-level platform for the application layer. The highest level is the application layer service.
2. IP protocol: This unreliable, connectionless transmission mechanism is called the Internet protocol.
3. Three definitions of IP protocol:
(1) IP defines the basic unit and data format of data transmission on the TCP/IP Internet.
(2) The IP software completes the routing function and selects the path for data transmission.
(3) IP contains a set of rules for unreliable packet transmission, specifying the rules for packet processing, error message generation, and grouping.
4. IP data packet: The basic transmission unit of networking is the IP data packet, including the data packet header and data area.
5. IP data packet encapsulation: The physical network encapsulates the entire data packet including the data packet header as data in a frame.
6. MTU network maximum transmission unit: Different types of physical networks have different upper bounds on the amount of data that can be transmitted in a physical frame.
7. Reorganization of IP data packets: The first is reorganization through a network; the second is reorganization after reaching the destination host. The latter is better because it allows each packet segment to be routed independently and does not require the router to store or reassemble the segments.
8. Survival time: There is a survival time field in the IP data packet format, which is used to set the time that the data packet is allowed to exist in the network, in seconds. If its value is 0, it is removed from the Internet and an error message is sent back to the originating site.
9. IP packet options:
The IP packet option field is mainly used for network testing or debugging. Including: record routing options, source routing options, timestamp options, etc.
The routing and timestamp options provide a way to monitor or control how packets are routed by Internet routers.
DVB (Digital Video Broadcasting) is a series of internationally recognized digital television open standards maintained by the DVB project.
For more PHP-related technical articles, please visit the PHP Graphic Tutorial column to learn!
The above is the detailed content of What protocol is used for IP data broadcast?. For more information, please follow other related articles on the PHP Chinese website!