Configuring The Function Of Dropping Unknown Ipv6 Multicast Data; Configuring Mld Report Suppression - HP A5500 SI Switch Series Configuration Manual

Configuring IPv6 multicast source port filtering on a port or a group of ports
Follow these steps to configure IPv6 multicast source port filtering on a port or a group of ports:
To do...
Enter system view
Enter Ethernet interface view or
port group view
Enable IPv6 multicast source port
filtering
Configuring the function of dropping unknown IPv6 multicast
data
Unknown IPv6 multicast data refers to IPv6 multicast data for which no entries exist in the MLD snooping
forwarding table. When the switch receives such IPv6 multicast traffic, one of the following occurs:
When the function of dropping unknown IPv6 multicast data is disabled, the switch floods unknown
•
IPv6 multicast data in the VLAN to which the unknown IPv6 multicast data belongs.
When the function of dropping unknown IPv6 multicast data is enabled, the switch forwards
•
unknown multicast data to its router ports instead of flooding it in the VLAN. If no router ports exist,
the switch drops the unknown multicast data.
Follow these steps to enable dropping unknown IPv6 multicast data in a VLAN:
To do...
Enter system view
Enter VLAN view
Enable dropping unknown IPv6
multicast data

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. When multiple members of an
IPv6 multicast group are attached to the Layer 2 switch, 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 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. This helps reduce the number of packets being transmitted over
the network.
Follow these steps to configure MLD report suppression:
To do...
Enter system view
Use the command...
system-view
interface interface-type interface-
number
port-group manual port-group-
name
mld-snooping source-deny
Use the command...
system-view
vlan vlan-id
mld-snooping drop-unknown
Use the command...
system-view
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Remarks
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Required
Use either approach
Required
Disabled by default
Remarks
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—
Required
Disabled by default
Remarks
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