H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 64)

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Configuration procedure
To enable dropping unknown IPv6 multicast data globally:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter MLD-snooping view. mld-snooping N/A
3. Enable dropping unknown
IPv6 multicast data.
drop-unknown Disabled by default
To enable dropping unknown IPv6 multicast data in a VLAN:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter VLAN view. vlan vlan-id N/A
3. Enable dropping unknown
IPv6 multicast data.
mld-snooping drop-unknown Disabled by default
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 that directly connects to the Layer 2 device. When multiple
members of an IPv6 multicast group are attached to the Layer 2 device, the Layer 3 device might 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. It will not forward the subsequent MLD
reports from the same multicast group. This helps reduce the number of packets being transmitted over
the network.
On an MLD snooping proxy, MLD membership reports are suppressed if the entries for the corresponding
groups exist in the forwarding table, regardless of whether the suppression function is enabled or not.
To configure MLD report suppression:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter MLD-snooping view. mld-snooping N/A
3. Enable MLD report
suppression.
report-aggregation Enabled by default
Setting the maximum number of multicast groups that a port can
join
By configuring the maximum number of IPv6 multicast groups that a port can join, you can limit the
number of multicast programs available to VOD users, to control the traffic on the port.