Siemens S323, S223 Igmp v2 Snooping Fast Leave, Multicast Packet, 290 A50010-Y3-C150-2-7619

UMN:CLI	User Manual
	SURPASS hiD 6615 S223/S323 R1.5

Multicast Packet

hiX 5430

Multicast Router

2.Transmit the Multicast packet to the port that send join massage

Multicast Join request	1. Request the
Multicast Packet	Multicast Packet

Fig. 9.4 IP Multicasting

IGMP Snooping is a function that finds port, which sends「Join message」to join in specific multicast group to receive multicast packet or「Leave message」to get out of the multicast group because it does not need packets.

Only when the switch is connected to multicast router, IGMP Snooping can be enabled.

9.2.5.1IGMP v2 Snooping Fast Leave

If the Multicast client sends the leave massage to leave out Multicast group, Multicast router sends IGMP Query massage to the client again, and when the client does not re- spond, delete the client from the Multicast group.

In IGMP v2, even after Host sent Leave Message, it receives Multicast Traffic until send- ing Specific Query. In Snooping Fast-Leave Enable mode, it sends no more Multicast Traffic immediately by deleting from Membership Table when receive Leave Message without sending Specific Query.

	Command			Mode	Description
ip igmp	snooping	immediate-			Configures the fast-leave on the system.
leave
				Global
ip igmp	snooping	vlan	VLANS		Configures the fast-leave on a VLAN interface.
immediate-leave

290 A50010-Y3-C150-2-7619