Configuring Igmp Snooping Port Functions; Configuration Prerequisites; Configuring Aging Timers For Dynamic Ports - HP 4800G Series Configuration Manual

To do...
Configure the version of IGMP
Snooping
If you switch IGMP Snooping from version 3 to version 2, the system will clear all IGMP Snooping
forwarding entries from dynamic joins, and will:
Keep forwarding entries for version 3 static (*, G) joins;
Clear forwarding entries from version 3 static (S, G) joins, which will be restored when IGMP
Snooping is switched back to version 3.
For details about static joins, Refer to

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 version
version-number
Configuring Static Ports.
Use the command...
system-view
igmp-snooping
router-aging-time interval
1-8
Remarks
Optional
Version 2 by default
Remarks
—
—
Optional
105 seconds by default