Enabling Mld Report Suppression - HP A8800 Configuration Manual

Step
1. Enter system view.
2. Enter VLAN view.
3. Enable dropping unknown
IPv6 multicast data.
NOTE:
When enabled to drop unknown IPv6 multicast data, the router still forwards unknown IPv6 multicast data
to other router ports in the VLAN.

Enabling 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 for the IPv6 multicast group from these members.
With the MLD report suppression function enabled, within a query interval, the Layer 2 device forwards
only the first MLD report for the IPv6 multicast group to the Layer 3 device. It does not forward subsequent
MLD reports for the same IPv6 multicast group to the Layer 3 device. This helps reduce the number of
packets being transmitted over the network.
IMPORTANT:
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.
To enable MLD report suppression:
Step
1. Enter system view.
2. Enter MLD snooping view.
3. Enable MLD report
suppression.
Setting the maximum number of multicast groups that a port can
join
You can set the maximum number of IPv6 multicast groups that a port can join to regulate the traffic on
the port.
When you configured the maximum number of IPv6 multicast groups that a port can join, if the current
number of IPv6 multicast groups the port has joined reaches the configured maximum value, the system
deletes all the forwarding entries persistent to that port from the MLD snooping forwarding table, and the
hosts on this port need to join IPv6 multicast groups again until the number of IPv6 multicast groups that
the port join reaches the maximum value. When the port joins IPv6 multicast groups, if the port has been
configured as a static member port, the system applies the configurations to the port again. If the port has
Command
system-view
vlan vlan-id
mld-snooping drop-unknown
Command
system-view
mld-snooping
report-aggregation
303
Remarks
N/A
N/A
Disabled by default.
Remarks
N/A
N/A
Enabled by default.