Configuring Mld Report Suppression; Configuring Mld-Related Functions; Configuration Prerequisites; Enabling Mld Snooping Querier - H3C S9500 Series Operation Manual

Operation Manual – MLD Snooping
H3C S9500 Series Routing Switches

1.4.5 Configuring MLD Report Suppression

When a Layer 2 device receives an MLD report from an IPV6 multicast group member,
the Layer 2 device forwards the message to the Layer 3 device directly connected with
it. Thus, when multiple members belonging to an IPv6 multicast group exist on the
Layer 2 device, the Layer 3 device directly connected with it will receive duplicate MLD
reports from these members.
With the MLD report suppression function enabled, within a query interval, the Layer 2
device forwards only the first MLD report of an IPv6 group to the Layer 3 device and will
not forward the subsequent MLD reports from the same multicast group to the Layer 3
device. This helps reduce the number of packets being transmitted over the network.
Follow these steps to configure MLD report suppression:
Enter system view
Enter MLD Snooping view
Enable MLD report
suppression

1.5 Configuring MLD-Related Functions

1.5.1 Configuration Prerequisites

Before configuring MLD-related functions, complete the following task:
Enable MLD Snooping in the VLAN
Before configuring MLD-related functions, prepare the following data:
MLD general query interval
MLD last-member query interval
Maximum response time for MLD general queries
Source IPv6 address of MLD general queries
Source IPv6 address of MLD multicast-address-specific queries
Whether to enable the function of dropping the unknown IPv6 multicast data

1.5.2 Enabling MLD Snooping Querier

In an IPv6 multicast network running MLD, a multicast router or Layer 3 multicast switch
is responsible for sending periodic MLD general queries, so that all Layer 3 multicast
devices can establish and maintain multicast forwarding entries, thus to forward
multicast traffic correctly at the network layer. This router or Layer 3 switch is called
MLD querier.
To do...
system-view
mld-snooping
report-aggregation
Chapter 1 MLD Snooping Configuration
Use the command...
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Remarks
—
—
Optional
Enabled by default