A unicast address identifies a single IP interface, and the broadcast address identifies all IP interfaces for a subnet. Multicast addresses represent a set of IP interfaces, unicast and broadcast are the two extremes (either single or full) of the addressing scheme, and multicast is intended to provide a compromise between the two. Multicast is an important tool
In this case, network radio may need to transmit the same data to tens of thousands of users at the same time, which is certainly unreasonable if it is transmitted once per user in the form of transmission we have previously spoken. Therefore, multicast technology is introduced to solve this problem, it can send the same data to a large number of users at the same time. The basic principle is this: there is a mult
In previous articles, we have explained the content of the IPv6 protocol. We should remember that in IPv6, there are unicast IPv6 routing protocols and IPv6 multicast routing protocols. Now let's take a look at the latter. What content does the IPv6 Multicast Routing Protocol contain? Let's take a look at the following content.
IPv6 Multicast Routing Protocol
IPv
dstadd;Dstadd. sin_family = af_inet;Dstadd. sin_port = htons (11114 );Dstadd. sin_addr.s_addr = inaddr_broadcast;Sendto (S, data (), totalbyte, 0, (sockaddr *) dstadd, sizeof (sockaddr ));
Multicast
Different from broadcasting, multicasting means that a piece of information is transmitted to a limited number of nodes in the LAN. Broadcasting sends broadcast information to a node regardless of whether a node is in a specified group, this can easily
can be an IP datagram, or it can be a shard of an IP datagram.Broadcast and multicastThere are three types of IP addresses: unicast addresses, broadcast addresses, and multicast addresses.Broadcast and multicast are only applied to UDP, and they are important for applications that need to transmit messages to multiple receivers at the same time. TCP is a connection-oriented protocol that means that there i
. The subnets can be divided into four subnets (,). On average, each subnet is 2 ^ 6-2 = 62, because the first subnet requires 100 instances, the subnet is divided into one
A subnet contains 100 hosts. Therefore, the binary system requires at least seven host numbers. Because the default subnet mask is 255.255.255.0, The subnet mask is 255.255.255.255.128 and the IP address is 192.168.15.1 ~ 192.168.15.127
A single subnet has 60 hosts. Therefore, the binary system requires at least six host numb
Technorati labels: CISCO, multicast, multicast, RPF, CCIE
RPF, reverse path forwarding.
It is an important foundation for multicast forwarding. Only after successful RPF detection can multicast traffic be correctly forwarded in the network.
When you query the keyword "cisco rpf detection mechanism and working principle
One disadvantage of broadcast is that it affects all computers in the subnet, even if they are not interested in this broadcast message. Multicast can solve this problem.
Multicast adopts Promotion Technology(Browsing Web pages is a drawing technology, and also a pushing technology.EmailService). Multicast is also called
The following is reproduced from: http://www.enet.com.cn/article/2011/0705/A20110705880890.shtml
I. Introduction to the topology structure of the networkThe structure of the network consists of three layers: the core layer, the aggregation layer and the access layer.The core layer consists of 5 core nodes (each core node is configured with a routing switch CiscoCatalyst6509), which is interconnected via gigabit fiber to an incomplete mesh structure.The aggregation layer consists of 53 nodes (one
;Dstadd.sin_family=af_inet;Dstadd.sin_port=htons (11114);Dstadd.sin_addr.s_addr=inaddr_broadcast;SendTo (S,data (), totalbyte,0, (sockaddr*) dstadd,sizeof (sockaddr));
Multicast
Multicast and broadcast, multicast refers to a piece of information to a limited number of nodes in the LAN transmission, and broadcast is whether a node in the development group, will
IPv6 provides many high-quality service functions, especially the multicast technology, which changes the traditional transmission mode of data streams and overcomes the shortcomings of unicast and broadcast. Modern distance education can use these advanced functions to promote its own development.
(1) feasibility of applying IPv6 Multicast technology to Modern Distance Education
1. The coverage rate of dis
MulticastUnlike the one-to-one transmission over the network, it is a one-to-many (at least one) point based on UDP/IP point transmission protocol,
The multicast router uses the IGMP protocol to check whether the multicast group receiver exists in the network segment connected to each interface, that is, the group members. If a member exists, the multicast router
In the network overuse phase, we will use the dual-stack technology to connect the two networks. In the double stack technology, IPv6 multicast provides powerful functions. It can run on both the router and host, and can write v4 and v6 to form a convergence point. In transition technology, IPv6 multicast is very important. We will discuss this in depth.
IPv6 multicast
http://blog.csdn.net/bloghome/article/details/4682984
Multicast Overview: Multimedia applications integrate sound, graphics, animation, text, and video, and this application is more and more in the current network environment.
Multimedia TrafficThere are three main modes of communication in the network: 1, Unicast (unicast) 2, broadcast (broadcast) 3, multicast (multica
IP multicast (also called multicast or multicast) technology allows one or more hosts (Multicast sources) to send a single packet to multiple hosts (once and simultaneously) TCP/IP network technology.
Multicast, as a one-to-multiple-point communication, is one of the effec
Recently, I was writing a Distributed Instant chat program. To enable normal communication between Intranet users, I want to use multicast to broadcast data"
According to the query data, UDP broadcast can only be effective on the Intranet (the same network segment), while Multicast can better implement mass data across network segments.
Introduction
There are three transmission modes: unicast,
Source: http://158067568.iteye.com/blog/901052udpbroadcast and Multicast
Author: Legend
QQ: 158067568
We recommend that you do not connect to UDP before transmitting information. In other words, the client sends information to the server. The client only needs to give the Server IP address and port number, and then encapsulate the information in a message to be sent and send it out. The client does not care whether the server exists or whether it can
IP multicast (also called multicast or multicast) technology allows one or more hosts (Multicast sources) to send a single packet to multiple hosts (once and simultaneously) TCP/IP network technology.
Multicast, as a one-to-multiple-point communication, is one of the effecti
= recvfrom(sockfd, recvline, MAXLINE, 0, preply_addr, len); if (n
Iv. Multicasting
1. multicast address
1). IPv4 multicast address, IPv6 multicast address, and IPv6 multicast address
Class D addresses in IPv4 (from 224.0.0.0 to 239.255.255.255) are multicast
Here's how to start our multicast programming:
First, the concept of multicast
Multicast, also known as "multicast", the network of the same business type of host logically grouped, the data sent and received only in the same group, other hosts did not join this group can not send and receive the corresponding data.
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