H3C Technologies H3C S3100 Series Switches - Manual (Page 316)

3-9
If you switch MLD snooping from version 2 to version 1, the system will clear all MLD snooping
forwarding entries from dynamic joining, and will:
z Keep forwarding entries from version 2 static (*, G) joining;
z Clear forwarding entries from version 2 static (S, G) joining, which will be restored when MLD
snooping is switched back to version 2.
For details about static joining, refer to Configuring Static Ports .
Configuring Limit on the Number of Forwarding Entries Globally
You can onfigure 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 creates no
more forwarding entries until the some entries time out or get 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 —
Configure the maximum number of
MLD snooping entries
entry-limit limit
Required
512 by default.
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.
Configuring MLD Snooping Port Functions
Configuration Prerequisites
Before configuring MLD snooping port functions, complete the following tasks:
z Enable MLD snooping in the VLAN
Before configuring MLD snooping port functions, prepare the following data:
z Aging time of dynamic router ports,
z Aging timer of dynamic member ports, and
z IPv6 multicast group and IPv6 multicast source addresses