H3C S5120-EI Series User Manual

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Configuring IPv6 Multicast Source Port Filtering
With the IPv6 multicast source port filtering feature enabled on a port, the port can be connected with
IPv6 multicast receivers only rather than with multicast sources, because the port will block all IPv6
multicast data packets while it permits multicast protocol packets to pass.
If this feature is disabled on a port, the port can be connected with both multicast sources and IPv6
multicast receivers.
Configuring IPv6 multicast source port filtering globally
Follow these steps to configure IPv6 multicast source port filtering:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter MLD Snooping view
mld-snooping
—
Enable IPv6 multicast source
port filtering
source-deny port interface-list
Required
Disabled by default
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... Use the command... Remarks
Enter system view
system-view
—
interface interface-type
interface-number
Enter Ethernet port view or port
group view
port-group manual
port-group-name
Required
Use either approach
Enable IPv6 multicast source
port filtering
mld-snooping source-deny
Required
Disabled by default
Some models of devices, when enabled to filter IPv6 multicast data based on the source ports, are
automatically enabled to filter IPv4 multicast data based on the source ports.
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

H3C S5120-EI Series Specifications

General

Brand	H3C
Model	S5120-EI Series
Category	Switch
Language	English