pgm multicast

OverviewUnicast is used for end-to-end communication between two hosts, and broadcasts are used for data communication on all hosts on the entire LAN for a host. Unicast and broadcast are two extremes, either to communicate with a host, or to communicate with hosts on the entire LAN. In practice, it is often necessary to communicate with a specific set of hosts, rather than all hosts on the entire LAN, which is the purpose of multicasting.IP Multicast

What is unicast, multicast, and broadcast? The terms unicast, multicast, and broadcast are all terms used to describe the communication methods between network nodes. So what exactly do these terms mean? What is the difference? Let's break it down. --★Unicast★--The communication between network nodes is like a conversation between people. If a person speaks to another person, the term network technology is

1 Introduction As people's living standards continue to improve, the public's consumption of information increases sharply, various broadband network applications such as ip TV, video conferencing, Network Audio applications, network video applications, and multimedia distance education have broad market prospects. At the same time, a large amount of bandwidth consumption poses a challenge for network operators to provide efficient and stable services based on existing network resources.Simply i

To accomplish useful work, peers in peer-to-peer applications must be able to discover each other and interact with each other. This article provides an implementation of a discovery based on IP multicast. Before a software entity can participate in a direct peer-to-peer interaction with a Peer-to-peer application feature, the entity must discover the appropriate peers to interact with. All available Peer-to-peer architectures provide a solution for

First to understand the next UDP UDP is the abbreviation of Userdatagram protocol, the Chinese name is User Datagram Protocol, is a connectionless transport layer protocol in the Reference Model of OSI (open System interconnection, open Systems Interconnection). Provides a transaction-oriented, simple, unreliable information delivery service, and IETF RFC 768 is the formal specification of UDP. The protocol number for UDP in IP packets is 17. The difference between UDP and TCP: http://blog.csdn.

In recent years, with the rapid development of information technology, a large number of network applications have increased, so that the existing huge data transmission volume has multiplied, and the optimized bandwidth can meet the needs of increasing data transmission volume, IP multicast technology is an important means to optimize bandwidth. It is applicable to data transmission services from multi-point to multi-point or from one point to multip

For a 2.6 kernel, there is a struct pointer inside the Net_device,struct dev_mc_list *dev->mc_listBy accessing it, you can loop through all of the multicast MAC addresses.However, the new kernel (at least 3.10) has changed, insteadstruct netdev_hw_addr_list mc;We can obtain the corresponding data by directly accessing the MC, or we can take advantage of the macros provided by the Linux kernel.netdev_mc_count(dev)This macro can get the current total nu

With the development of broadband, the increasing demand for multimedia services has stimulated the popularization and development of IP multicast technology and become an indispensable key technology for the next generation of networks. Currently, the IP multicast technology is quite mature, which means that operators and enterprises can use this technology to obtain economic benefits. Mature IP

1. Introduction IP multicast transfers data to some hosts. One or more hosts are represented by one IP address. Multicast transfers data to all hosts in the best way like normal IP Address Transmission. The group members are dynamic. Members can join or leave a group at any time. The group size and position are not limited. A host can be a member of multiple groups. The Group can be permanent or temporary.

The little Porter is here again, 51 holidays are over.1. Introduction Broadcast and multicast only apply to UDP because TCP is a connection-oriented protocol (IP address determination) Unicast: The Ethernet frame is only destined for a single destination host, and the destination address indicates a single receive interface. In this mode, any two host communication will not affect the other hosts in the network (except for the

reduced the quality and effectiveness of distance education. The emergence of IPv6 not only solves the problem that 1Pv4 address space is almost exhausted, but also improves the basic Header Format of IP data packets. The most important thing is that IPv6 can better support multicast, video and audio streaming media teaching information can be smoothly transmitted without a significant increase in network bandwidth, which reduces network bandwidth an

in theInternet, multimedia services such as streaming media, video conferencing, and video-on-demand are becoming an important part of information transmission. The unicast mode of point-to-point transmission cannot adapt to this kind of service transmission specialSex--single-point multicast, because the server must provide each recipient with the same contentIPmessage Copy, while the network also repeatedly transmits the same content of the message,

The IP address consists of three types: unicast address (destination is a single host), broadcast address (destination is all hosts on a given network), and multicast address (destination is all hosts within the same group).　　broadcast and multicast only apply to UDP, It is important that they transmit messages to multiple receivers simultaneously.　　TCP is a connection-oriented protocol that means that ther

Digital video transmission is a communication method that people use vision to obtain information. Compared with other information transmission methods, digital video transmission is accurate, intuitive, and efficient. Due to the large amount of information transmitted by digital videos and limited bandwidth, the compression and encoding of videos, selection of transmission channels and network protocols, and IP multicast technology (IP

The multicast IP technology of Linux Network-Linux Enterprise Application-Linux server application information. The following is a detailed description. Author: Cao jianghua Multicast broadcast is an important tool used to establish a distributed system, such as online games, ICQ Chat construction, and Remote Video Conferencing Systems. The multicast broadcast p

In history, multicasting has become more fashionable. IP multicast means that a sender sends data to multiple recipients, but only one copy of the data is required. Multicast is very useful for streaming media, so let's take a look at its working principles. Multicast is like broadcasting, and some specific addresses are allocated to

UDP multicast can be used to broadcast data in the intarnet or Internet datagram mode (multicast over the Internet requires the router to support IGMP (Internet gateway management protocol, this Protocol appears after the IP address appears to support multicast )). compared with broadcasts that consume extremely bandwidth (broadcast can only be broadcast within t

I. Description of the 1.1 Standard multicast interpretationCommunication is divided into unicast, multicast (that is, multicast), broadcast three kinds of waysUnicast means that the IP packet is transmitted by the router to the only device specified by the destination IP after the sender is sent, for example, you are now communicating with the Web server as a uni

On the Internet , multimedia services such as streaming media, video conferencing and video-on-demand are becoming an important part of information transmission. The unicast mode of point-to-point transmission cannot adapt to this kind of business transmission characteristic -- single point of sending multipoint receive, because the server must provide each receiver with a copy of the same content of the IP message, while the network also repeatedly transmits the same content of the message, occ

1. Introduction to unicast, multicast, and broadcast 1. 1. Unicast (unicast) Unicast means data transmission to a specific host. For example, an IP packet is sent to a host. At this time, the data link layer is given in the Data header is very specific destination address, for Ethernet, is the nic mac address (not FF-FF-FF-FF-FF-FF such address ). The current host with the routing function should be able to distribute unicast data in a targeted manner