H3C Technologies H3C S7500E Series Switches - Manual (Page 43)

2-11
Configuring the Maximum Number of Global IGMP Forwarding Entries
You can globally configure the maximum number of entries in the IGMP snooping forwarding
table. When the number of forwarding entries maintained by the device reaches the threshold,
the device creates no more forwarding entries until 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 IGMP snooping view igmp-snooping —
Configure the maximum number
of global forwarding entries
entry-limit limit
Required
1000 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 any new entries.
Configuring IGMP Snooping Port Functions
Configuration Prerequisites
Before configuring IGMP snooping port functions, complete the following tasks:
z Enable IGMP snooping in the VLAN
z Configure the corresponding port groups.
Before configuring IGMP snooping port functions, prepare the following data:
z Aging time of dynamic router ports,
z Aging time of dynamic member ports, and
z 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.