pgm multicast

The full name of PGM is called the probability map model, and it doesn't feel good until you learn it. Now that I have studied, I feel that it is of great use. Below on some of my Learning and learning journey record down, will inevitably have some wrong ideas, welcome to pass by friends to correct. 2016.12.23I am learning prml This classic textbook, now in the study of 8.4.4 Festival, "and-Product algorithm", a few days to write the sentiment of thi

In a local area network, administrators often need to send a piece of information to a group of users. If you use a one-to send method, although it is feasible, but too cumbersome, there will often be missed, wrong hair. In order to solve this group communication problem more effectively, a kind of multicast technology (also commonly called multicast communication) is presented, which is based on the IP lay

Abstract: multicast communication is a hot network technology. This article describes the basic concepts of IP multicast technology, multicast addressing, Internet Group Management Protocol (IGMP), multicast routing algorithms, and existing multicast routing protocols, and t

Original address: http://blog.sina.com.cn/s/blog_49843aeb0100i0bc.htmlMulticastfunction: Inter-host communication usage, inter-routing communication usage concept :IP multicast technology, which is one or more hosts (multicast source) that allows sending a single packet to multiple hosts (at the same time) TCP/IP network technology, is a point-to-multipoint communicationWhy use it ?: In the application of n

I. Introduction With the development of the network, people have developed various services on the network platform, such as E-mail, TELNET, FTP, and WWW. These services are point-to-point data transmission; people prefer to hold video conferences, listen to live concerts, and watch live broadcasts on the Internet. These are data transmission from point to point or to point, and IP multicast is required) communication technology. At present, this tech

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

Original: http://blog.chinaunix.net/uid-28458801-id-5085099.html 11.3 Multicast Unicast 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

In the project, the Ys Private protocol uses multicast technology, which uses Python to send multicast packets when verifying its security features, and to make a record here. Python has complete support for sockets. Some of the APIs though have a different signature than the POSIX equivalents. It is therefore possible to write multicast servers and clients

Tags: CISC IEEE 2.3 Address STP Protocol pause nbsp STP network deviceTurn from: Multicast MAC addressThe MAC address is a 48bit (6-byte hexadecimal number) address used by the Ethernet two layer to identify the device location. The MAC address is divided into two parts, the first 24 bits being the organization's unique identifier (OUI, organizationally unique identifier), and the last 24 bits being assigned by the vendor itself.MAC addresses have uni

Class d ip addresses (224.0.0.0 to 239.255.255.255) do not recognize a single interface on the Internet, but recognize an interface group, which is called multicast groups. Members of a single network use the IGMP protocol to communicate with each other. Multicast Routing Protocol for multicast routers, such as dvmrp (Distance Vector

Part of this article is reproduced in: http://network.51cto.com/art/200912/168407.htm Before talking about IGMP, it is said that IGMP packets cannot be transmitted outside the LAN (for details, see: http://blog.csdn.net/todd911/article/details/9530633), so how to communicate between routers after hosts in different network segments join multicast groups, do you know which subnet to forward? This is the function of the IP

assurance mechanism different from traditional unicast and broadcast mechanisms. IP multicast technology is the key technology to solve these problems.I. Overview of basic knowledge of IP multicast technology1. Concepts of IP multicast technologyIP multicast is also called multi-site broadcast or

Analysis of Three TCP/IP transmission modes (unicast, broadcast, and Multicast)The Multicast Technology of TCP/IP transmission mode is a type of TCP/IP transmission mode. Before discussing Multicast technology, let's take a look at TCP/IP transmission methods. There are three TCP/IP transmission modes: unicast, broadcast, and

In unicast mode there are server and client points, and the multicast mode is different from unicast mode, each end is a router or switch as a relay station, either end of the router or switch to send messages, routing or switch responsible for sending other nodes, each node is equal. So you can use the same class representation in programming mode--multicastsocket. MulticastSocket belongs to the class provided by the jdk , the classpath is java.net.M

I. Data Transmission over an IP Network Multicast technology is one of the three methods of data transmission over an IP network. Before introducing the IP multicast technology, we will give a brief introduction to the unicast, multicast, and broadcast modes of data transmission over an IP network: GroupBroadcast Unicast transmission: Implements point-to-

Introduction In Chapter 1st, we mentioned three IP addresses: unicast address, broadcast address, and multicast address. This chapter introduces broadcast and multicast in more detail.Broadcast and multicast are only used in UDP. They are very important for applications that need to transmit packets to multiple receivers at the same time. TCP is a connection-orie

Class D addresses are used for multicast, which starts with 1110, and the remaining 28 are used to identify multicast addresses (the remaining 28 are non-structured addresses ), MAC addresses starting with 01005e are used to represent MAC multicast addresses, while the remaining 23 are used to identify multicast. IP

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

1, the problem description: We have a CPE MP1803 router as a customer's CE router, the PC after the IGMP report, our router will be in the IGMP table to write the multicast group, but the customer said that the upstream of the PE device does not receive the PIM of our equipment Join message and ultimately cannot draw the multicast traffic down. After the investigation, found that customers in the same loc

Brief introductionBefore a manufacturer can manufacture a network card, it must register with the IEEE to obtain a vendor code length of 24bit, also known as OUI (Organizationally-unique Identifier). In the process of manufacturing the network card, the manufacturer will burn a 48bit bia (burned-in address, Cure addresses) address to each of the NIC's ROM, the first 3 bytes of the BIA address are the manufacturer's OUI, and the last 3 bytes are determined by the manufacturer itself, but differen