H3C Technologies H3C S12500-X Series Switches - Manual (Page 127)

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Configuring IPv6 multicast source port filtering globally
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter MLD-snooping view. mld-snooping N/A
3. Enable IPv6 multicast source
port filtering.
source-deny port interface-list
By default, the IPv6 multicast
source port filtering is disabled.
Configuring IPv6 multicast source port filtering on a port
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter Layer 2 Ethernet
interface view. interface interface-type
interface-number
N/A
3. Enable IPv6 multicast source
port filtering.
mld-snooping source-deny
By default, the IPv6 multicast
source port filtering is disabled.
Enabling dropping unknown IPv6 multicast data
Unknown IPv6 multicast data refers to IPv6 multicast data for which no forwarding entries exist in the MLD
snooping forwarding table. When the switch receives such multicast data, one of the following occurs:
• If the function of dropping unknown IPv6 multicast data is disabled, the switch floods unknown IPv6
multicast data in the VLAN to which the data belongs.
• If the function of dropping unknown IPv6 multicast data is enabled, the switch forwards unknown
IPv6 multicast data to other router ports instead of flooding it in the VLAN. If no other router ports
exist, the switch drops the unknown IPv6 multicast data.
Configuration guidelines
• The drop-unknown and mld-snooping drop-unknown commands are mutually exclusive. Do not
configure them at the same time.
• You can enable dropping unknown multicast data either for the current VLAN in VLAN view or
globally for all VLANs in MLD-snooping view. If configurations are made in both VLAN view and
MLD-snooping view, the configuration made in VLAN view takes priority.
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 globally.
drop-unknown
By default, this function is disabled.
Unknown IPv6 multicast data is
flooded.
To enable dropping unknown IPv6 multicast data for a VLAN: