HP 6125XLG R2306-HP 6125XLG Blade Switch IP Multicast Configuration Guide - Page 106
Configuring MLD snooping, Overview, Basic MLD snooping concepts, MLD snooping related ports
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Configuring MLD snooping Overview MLD snooping runs on a Layer 2 switch as an IPv6 multicast constraining mechanism to improve multicast forwarding efficiency. It creates Layer 2 multicast forwarding entries from MLD messages that are exchanged between the hosts and the router. As shown in Figure 35, when MLD snooping is not enabled, the Layer 2 switch floods IPv6 multicast packets to all hosts. When MLD snooping is enabled, the Layer 2 switch forwards multicast packets of known IPv6 multicast groups to only the receivers. Figure 35 Multicast packet transmission processes without and with MLD snooping Basic MLD snooping concepts MLD snooping related ports As shown in Figure 36, MLD snooping runs on Switch A and Switch B, and Host A and Host C are receivers in an IPv6 multicast group. 99
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