Netgear XSM4324FS Software Administration Manual Software Version 12.x - Page 644
Multicast Listener Discovery Concepts, Con MLD
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M4300 Series and M4300-96X Fully Managed Switches Multicast Listener Discovery Concepts Multicast Listener Discovery (MLD) protocol enables IPv6 routers to discover multicast listeners, the nodes that are configured to receive multicast data packets, on its directly attached interfaces. The protocol specifically discovers which multicast addresses are of interest to its neighboring nodes and provides this information to the active multicast routing protocol that determines the flow of multicast data packets. Periodically, the multicast router sends general queries requesting multicast address listener information from systems on an attached network. These queries are used to build and refresh the multicast address listener state on the attached networks. In response to the queries, multicast listeners reply with membership reports. These membership reports specify their multicast addresses listener state and their desired set of sources with current-state multicast address records. The multicast router also processes unsolicited filter- mode-change records and source-list-change records from systems that want to indicate interest in receiving or not receiving traffic from particular sources. Configure MLD In this case, PIM-DM is enabled on Switch A and Switch B, and MLD is enabled on Switch B's port 1/0/24 to discover the multicast listeners. IPv6 multicast source 2001:2::/65 Switch A Port 1/0/13 Port 1/0/1 2001:1::/64 Switch B Port 1/0/21 Port 1/0/24 2001:3::/64 Host Figure 63. Configure MLD MLD 644 Software Administration Manual
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