Packet Forwarding, Kartoniert / Broschiert

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Forwarding is the relaying of packets from one network segment to another by nodes in a computer network. A unicast forwarding pattern, typical of many networking technologies including the overwhelming majority of Internet traffic. A multicast forwarding pattern, typical of PIM. A broadcast forwarding pattern, typical of bridged EthernetThe simplest forwarding model - unicasting - involves a packet being relayed from link to link along a chain leading from the packet's source to its destination. However, other forwarding strategies are commonly used. Broadcasting requires a packet to be duplicated and copies sent on multiple links with the goal of delivering a copy to every device on the network. In practice, broadcast packets are not forwarded everywhere on a network, but only to devices within a broadcast domain, making broadcast a relative term. Less common than broadcasting, but perhaps of greater utility and theoretical significance, is multicasting, where a packet is selectively duplicated and copies delivered to each of a set of recipients.