multicast vpn

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

Programming | data In the information age, the application of network technology has been very common. Many of these applications rely on the ability to send the same information from one host to multiple hosts or from multiple hosts, and the number of distributed on the Internet may reach hundreds of thousands of, which requires higher bandwidth and is far beyond the ability to unicast. An important technology that maximizes the use of existing bandwidth is IP

　　What is a VPN? 　　The English full name of the VPN is "virtual private network", translation comes from "The fictitious specialized network". As the name suggests, virtual private network we can understand him as a virtual out of the enterprise internal line. This VPN's English full name is "Virtual private network", translates is "The fictitious private network". As the name suggests, the virtual privat

Pptp settings and local vpn (and solve the problem that ssh cannot access the remote host under the vpn), pptpssh1. Install pptpSudo apt-get install-y ppp pptpdsudo vim/etc/pptpd. conf modification: option/etc/ppp/pptpd-optionslocalip 172.31.26.19 (local vpn address) remoteip 172.31.26.20-200 (vpn customer point addres

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

Learning Method:WhyWhatHowWhy does this technology come into being. Without this technology, what is the current situation?What is this technology? Its principle, operating process, its working process, its functions, and so onHow to Implement --- basic configuration, optimized configuration, advanced configuration, security features and summary.Advantages of Multicast:One-to-multiple, send data to multiple receivers at the same time.Bandwidth savingSaves hardware resources and so on.Vro with IP

IPV4 Multicast (multicast) mechanism refers to: the mechanism of sending and receiving IP multicast traffic. IP multicast traffic is sent to a single destination IP address, but is received and processed by multiple IP hosts, regardless of where the host is located on the IP internetwork. A host listens on a specific I

Pptp settings and local vpn (and solve the problem that ssh cannot access the remote host under the vpn)1. Install pptpSudo apt-get install-y ppp pptpdsudo vim/etc/pptpd. conf modification: option/etc/ppp/pptpd-optionslocalip 172.31.26.19 (local vpn address) remoteip 172.31.26.20-200 (vpn customer point address range)C

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

1, broadcast and multicast are only applicable to UDP, because TCP is connection-oriented, you need to bind two hosts two processes, that is, IP address and port pair2, usually, the network card can see every data frame in the net, but often it only accepts the destination address and its own MAC address of the same or broadcast address of the frame (now some can also receive a multicast address), and then

Network Communication: unicast, broadcast, and Multicast Directory: I. Classification of network communication, their definition and characteristics. 2. network topology model of unicast, broadcast, and Multicast Transmission Information. Iii. unicast, broadcast, and multicast programming instances. I. Classification of network communication, their definition an

VPN is the abbreviation of Virtual private network, it is simply to use public network link to erect private network, it belongs to remote access technology. VPN server in the current network application is more and more extensive, today I come to you for a brief introduction of the VPN server configuration and users use VPN