Configuring Igmp Snooping Port Functions; Configuring Aging Timers For Dynamic Ports - 3Com S7906E Configuration Manual

To do...
Enter IGMP snooping view
Configure the maximum
number of global forwarding
entries
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 any new entries.

Configuring IGMP Snooping Port Functions

Configuration Prerequisites
Before configuring IGMP snooping port functions, complete the following tasks:
Enable IGMP snooping in the VLAN
Configure the corresponding port groups.
Before configuring IGMP snooping port functions, prepare the following data:
Aging time of dynamic router ports,
Aging time of dynamic member ports, and
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 the dynamic
member port aging timer, and vice versa.
Configuring aging timers for dynamic ports globally
Follow these steps to configure aging timers for dynamic ports globally:
To do...
Enter system view
Enter IGMP snooping view
Configure dynamic router port
aging time
Use the command...
igmp-snooping
entry-limit limit
Use the command...
system-view
igmp-snooping
router-aging-time interval
1-11
Remarks
—
Required
1000 by default.
Remarks
—
—
Optional
105 seconds by default