Publication

A Scalable Protocol For Reporting Periodically Using Multicast IP

Ljubica Blazevic, Eric Gauthier
1998
Conference paper
Abstract

We propose a protocol that controls the members of a multicast group that send periodically status reports to all members. The protocol, called Multicast Access Protocol (MAP), limits the number of concurrent multicast reports as the group size becomes large. MAP is a decentralised protocol that provides an access control mechanism to an IP multicast group. The protocol supports members joining and leaving the group dynamically as well as changes in the underlying network topology. MAP is a self-configuring mechanism and requires every member to keep only local information independent of the group size. We describe the protocol both formally and informally.

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Related concepts (27)
Multicast
In computer networking, multicast is group communication where data transmission is addressed to a group of destination computers simultaneously. Multicast can be one-to-many or many-to-many distribution. Multicast should not be confused with physical layer point-to-multipoint communication. Group communication may either be application layer multicast or network-assisted multicast, where the latter makes it possible for the source to efficiently send to the group in a single transmission.
Multicast address
A multicast address is a logical identifier for a group of hosts in a computer network that are available to process datagrams or frames intended to be multicast for a designated network service. Multicast addressing can be used in the link layer (layer 2 in the OSI model), such as Ethernet multicast, and at the internet layer (layer 3 for OSI) for Internet Protocol Version 4 (IPv4) or Version 6 (IPv6) multicast. IPv4 multicast addresses are defined by the most-significant bit pattern of 1110.
Communication protocol
A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any variation of a physical quantity. The protocol defines the rules, syntax, semantics, and synchronization of communication and possible error recovery methods. Protocols may be implemented by hardware, software, or a combination of both. Communicating systems use well-defined formats for exchanging various messages.
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