H3C Technologies H3C S3100V2 Series Switches - Manual (Page 83)

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Follow these steps to enable dropping unknown IPv6 multicast data globally:
To do... Use the command... Remarks
Enter system view system-view —
Enter MLD snooping view mld-snooping —
Enable dropping unknown IPv6
multicast data
drop-unknown
Required
Disabled by default
Configuring MLD report suppression
When a Layer 2 switch receives an MLD report from an IPv6 multicast group member, the Layer 2 switch
forwards the message to the Layer 3 device directly connected with it. Thus, when multiple members that
belong to an IPv6 multicast group exist on the Layer 2 switch, the Layer 3 device directly connected with
it will receive duplicate MLD reports from these members.
When the MLD report suppression function is enabled, within a query interval, the Layer 2 switch
forwards only the first MLD report of an IPv6 group to the Layer 3 device. It will not forward the
subsequent MLD reports from the same multicast group to the Layer 3 device. This helps reduce the
number of packets that are transmitted over the network.
Follow these steps to configure MLD report suppression:
To do... Use the command... Remarks
Enter system view system-view —
Enter MLD snooping view mld-snooping —
Enable MLD report suppression report-aggregation
Optional
Enabled by default
CAUTION:
On an MLD snooping proxy, MLD membership reports are suppressed if the entries for the corresponding
groups exist in the forwarding table, whether the suppression function is enabled or not.
Configuring maximum multicast groups that a port can join
The maximum number of IPv6 multicast groups that a port can join can limit the number of multicast
programs available to VOD users, to control the traffic on the port.
Follow these steps configure the maximum number of IPv6 multicast groups that a port can join:
To do... Use the command... Remarks
Enter system view system-view —
interface interface-type
interface-number
Enter Ethernet interface/Layer 2
aggregate interface view or port
group view
port-group manual
port-group-name
Required
Use either approach
Configure the maximum number of
IPv6 multicast groups that a port
can join
mld-snooping group-limit limit
[ vlan vlan-list ] Optional
512 by default