H3C Technologies H3C S10500 Series Switches - Manual (Page 278)

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Configuring the version of MLD snooping
By configuring the MLD snooping version, you actually configure the version of MLD messages that MLD
snooping can process.
• MLDv1 snooping can process MLDv1 messages, but cannot analyze or process MLDv2 messages,
which will be flooded in the VLAN.
• MLDv2 snooping can process MLDv1 and MLDv2 messages.
Follow these steps to configure the version of MLD snooping:
To do… Use the command… Remarks
Enter system view system-view —
Enter VLAN view vlan vlan-id —
Configure the version of MLD
snooping mld-snooping version
version-number Required
Version 1 by default.
CAUTION:
If you change MLDv2 snooping to MLDv1 snooping, the system clears all MLD snooping forwarding
entries that the system adds dynamically, and also does the following:
• Keeps static MLDv2 snooping forwarding entries (*, G)
• Clears static MLDv2 snooping forwarding entries (S, G), which will be restored when MLDv1 snooping
is changed back to MLDv2 snooping
For more information about static joining, see “ Configuring static ports .”
Setting the maximum number of entries in the MLD snooping
forwarding table
You can set the maximum number of entries in the MLD snooping forwarding table. When the number of
forwarding entries maintained by the device reaches the threshold, the device does not create
forwarding entries until some entries time out or are manually removed.
Follow these steps to configure the maximum number of entries in the forwarding table:
To do... Use the command... Remarks
Enter system view system-view —
Enter MLD-snooping view mld-snooping —
Set the maximum number of entries
in the MLD snooping forwarding
table
entry-limit limit
Required
1000 by default.
NOTE:
•
If the number of existing entries is larger than the limit when you configure it, the device informs you to
remove excessive entries. In this case, the device does not automatically remove any existing entries or
create new entries.
• MLD snooping forwarding entries created for multicast VLAN are not limited by this command. You can
use the multicast-vlan ipv6 entry-limit to limit the number of entries in the MLD snooping forwarding
table of a multicast VLAN. For more information, see the chapter “IPv6 multicast VLAN configuration.”