H3C Technologies H3C S3100V2 Series Switches - Manual (Page 74)

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To do... Use the command... Remarks
Enter Ethernet interface/Layer 2
aggregate interface view or port
group view
interface interface-type
interface-number
Required
In Ethernet interface view or Layer
2 aggregate interface view, the
configuration takes effect on only
the current interface. In port
group view, the configuration
takes effect on all ports in the port
group.
Configure a static multicast MAC
address entry
mac-address multicast mac-address
vlan vlan-id
Required
No static multicast MAC address
entries exist by default.
NOTE:
•
For more information about the mac-address multicast command, see the IP Multicast Command
Reference.
• When configuring a static multicast MAC address entry in system view, the configuration is effective for
the specified interface. When configuring a static multicast MAC address entry in interface view or port
group view, the configuration is effective only for the current interface or interfaces in the current port
group.
• Any IPv6 multicast MAC address except 3333-xxxx-xxxx—where x represents a hexadecimal number
from 0 to F—can be manually added to the MAC address table. A multicast MAC address is a MAC
address whose the least significant bit of the most significant octet is 1.
Configuring MLD snooping port functions
Configuration prerequisites
Before you configure MLD snooping port functions, complete the following tasks:
• Enable MLD snooping in the VLAN
• Configure the corresponding port groups
• Determine the aging time of dynamic router ports
• Determine the aging timer of dynamic member ports
• Determine the IPv6 multicast group and IPv6 multicast source addresses
Configuring aging timers for dynamic ports
If the switch receives no MLD general queries or IPv6 PIM hello messages on a dynamic router port, the
switch removes the port from the router port list when the aging timer of the port expires.
If the switch receives no MLD reports for an IPv6 multicast group on a dynamic member port, the switch
removes the port from the outgoing port list of the forwarding table entry for that IPv6 multicast group
when the port aging timer expires.
If IPv6 multicast group memberships change frequently, set a relatively small value for the dynamic
member port aging timer.