Netgear XSM4324FS Software Administration Manual Software Version 12.x - Page 575
Protocol Independent Multicast Concepts, PIM-DM
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M4300 Series and M4300-96X Fully Managed Switches Protocol Independent Multicast Concepts The PIM protocol can be configured to operate on IPv4 and IPv6 networks. Separate CLI commands are provided for IPv4 and IPv6 operation; however, most configuration options are common to both protocols. Therefore, this section describes only IPv4 configuration; IPv6 configuration is similar to IPv4. Multicast protocols are used to deliver multicast packets from one source to multiple receivers. They facilitate better bandwidth utilization, and use less host and router processing, making them ideal for usage in applications such as video and audio conferencing, whiteboard tools, and stock distribution tickers. PIM is a widely used multicast routing protocol. Protocol Independent Multicast (PIM) is a standard multicast routing protocol that provides scalable inter-domain multicast routing across the Internet, independent of the mechanisms provided by any particular unicast routing protocol. There are two types of PIM: • PIM-Dense Mode (PIM-DM) • PIM-Sparse Mode (PIM-SM) PIM-DM PIM-DM is appropriate for: • Densely distributed receivers • A ratio of few senders to many receivers (due to frequent flooding) • High volume of multicast traffic • Constant stream of traffic PIM 575 Software Administration Manual
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