Configuring Host-based Fast Leave
Context
The host-based fast leave function enables a switch to delete a host from the host list of a group immediately after receiving an IGMP Leave message from the host. If the deleted host is the last receiver host connected to the group member port, the switch deletes the forwarding entry of the group from the port, without waiting the aging timer of the port to expire. This conserves bandwidth and system resources.
Host-based fast leave takes effect in a VLAN only when the switch can process IGMPv2 messages in the VLAN.