9 mld snooping configuration, Mld snooping overview, Introduction to mld snooping – H3C Technologies H3C S7500E Series Switches User Manual
Page 257: Mld snooping configuration
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MLD Snooping Configuration
When configuring MLD snooping, go to these sections for information you are interested in:
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MLD Snooping Configuration Task List
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Displaying and Maintaining MLD Snooping
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MLD Snooping Configuration Examples
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The S7500E Series Ethernet Switches are distributed devices that support Intelligent
Resilient Framework (IRF). Two S7500E series can be connected together to form a
distributed IRF device. If an S7500E series is not in any IRF, it operates as a distributed
device; if the S7500E series is in an IRF, it operates as a distributed IRF device. For
introduction of IRF, refer to IRF Configuration in the IRF Configuration Guide.
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EA cards (such as LSQ1GP12EA and LSQ1TGX1EA) do not support IPv6 features.
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.
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
, when MLD snooping is not running, IPv6 multicast packets are
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.