Configuring Mld Snooping; Overview; Basic Mld Snooping Concepts - HPE FlexNetwork 5130 EI Series Configuration Manual

Configuring MLD snooping

Overview

MLD snooping runs on a Layer 2 device 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
packets to all hosts. When MLD snooping is enabled, the Layer 2 device forwards multicast packets
of known IPv6 multicast groups to only the receivers.
Figure 22 Multicast packet transmission processes without and with MLD snooping

Basic MLD snooping concepts

MLD snooping related ports
As shown in
receiver hosts in an IPv6 multicast group.
Figure 22, when MLD snooping is not enabled, the Layer 2 device floods IPv6 multicast
Figure 23, MLD snooping runs on Switch A and Switch B, and Host A and Host C are
54