H3C Technologies H3C S10500 Series Switches - Manual (Page 38)

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NOTE:
•
In system view, the configuration is effective for the specified ports. In interface view or port group view,
the configuration is effective only on the current port or the ports in the current port group.
• Any legal multicast MAC address except 0100-5Exx-xxxx (where x represents a hexadecimal number
from 0 to F) can be manually added to the multicast MAC address table. Multicast MAC addresses are
the MAC addresses whose the least significant bit of the most significant octet is 1.
Configuring IGMP snooping port functions
Configuration prerequisites
Before you configure IGMP snooping port functions, complete the following tasks:
• Enable IGMP snooping in the VLAN
• Configure the corresponding port groups
• Determine the aging time of dynamic router ports
• Determine the aging time of dynamic member ports
• Determine the multicast group and multicast source addresses
Configuring aging timers for dynamic ports
If the switch receives no IGMP general queries or 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 IGMP reports for a multicast group on a dynamic member port, the switch
removes the port from the outgoing port list of the forwarding table entry for that multicast group when
the aging timer of the port for that group expires.
If multicast group memberships change frequently, you can set a relatively small value for aging timer for
the dynamic member ports, and vice versa.
Configuring aging timers for dynamic ports globally
Follow these steps to configure aging timers for dynamic ports globally:
To do... Use the command... Remarks
Enter system view system-view —
Enter IGMP-snooping view igmp-snooping —
Set the aging timer for dynamic
router ports
router-aging-time interval
Required
105 seconds by default.
Set the aging timer for dynamic
member ports
host-aging-time interval
Required
260 seconds by default.
Configuring aging timers for dynamic ports in a VLAN
Follow these steps to configure aging timers for dynamic ports in a VLAN:
To do... Use the command... Remarks
Enter system view system-view —