Mld Snooping Overview - H3C S3610-28P Operation Manual

Operation Manual – Multicast Protocol
H3C S3610&S5510 Series Ethernet Switches
Chapter 3 MLD Snooping Configuration
When configuring MLD Snooping, go to these sections for information you are
interested in:

MLD Snooping Overview

MLD Snooping Configuration Task List
Displaying and Maintaining MLD Snooping
MLD Snooping Configuration Examples
Troubleshooting MLD Snooping
3.1 MLD Snooping Overview
Multicast Listener Discovery Snooping (MLD Snooping) is an IPv6 multicast
constraining mechanism that runs on Layer 2 devices to manage and control IPv6
multicast groups.
3.1.1 Introduction to MLD Snooping
By analyzing received MLD messages, a Layer 2 device running MLD Snooping
establishes mappings between ports and multicast MAC addresses and forwards IPv6
multicast data based on these mappings.
As shown in
broadcast to all devices at Layer 2. When MLD Snooping runs, multicast packets for
known IPv6 multicast groups are multicast to the receivers at Layer 2.
Figure 3-1 Before and after MLD Snooping is enabled on the Layer 2 device
Figure 3-1, when MLD Snooping is not running, IPv6 multicast packets are
Chapter 3 MLD Snooping Configuration
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