Setting the Maximum Number of IGMP mcache Entries and Group Addresses

You can change the maximum number of IGMP group addresses and the maximum number of IGMP mcache entries.

  1. Enter global configuration mode.
    device# configure terminal
  2. To set the maximum number of IGMP group addresses, use the system-max igmp-snoop-group-addr command.
    device(config)# system-max igmp-snoop-group-addr 1600
    The configured number of IGMP group addresses is the upper limit of an expandable database. Client memberships exceeding the group limit are not processed.
  3. To change the maximum number of IGMP snooping cache entries supported on a device, use the system-max igmp-snoop-mcache command.
    device(config)# system-max igmp-snoop-mcache 2000

The following example sets the maximum number of IGMP group addresses to 1600, and the maximum number of IGMP mcache entries to 2000.

device# configure terminal
device(config)# system-max igmp-snoop-group-addr 1600
device(config)# system-max igmp-snoop-mcache 2000