Operation Manual – IGMP SnoopingH3C S9500 Series Routing Switches Chapter 1 IGMP Snooping Configuration1-24Note:The configurations mentioned above are for reference only. Specific configurations aresubject to the actual implementations of the devices.3) Configure Switch A# Create VLAN 100. system-view[SwitchA] vlan 100# Assign Ethernet 1/1/1 through Ethernet 1/1/4 to this VLAN.[SwitchA-vlan100] port ethernet 1/1/1 to ethernet 1/1/4[SwitchA-vlan100] quit# Enable IGMP Snooping in VLAN 100 and set the version to 3.[SwitchA] igmp-snooping[SwitchA-igmp-snooping] quit[SwitchA] vlan 100[SwitchA-vlan100] igmp-snooping enable[SwitchA-vlan100] igmp-snooping version 3[SwitchA-vlan100] quit# Enable simulated (S, G) joining on Ethernet 1/1/2 and Ethernet 1/1/3.[SwitchA] interface ethernet 1/1/2[SwitchA-Ethernet1/1/2] igmp-snooping host-join 232.1.1.1 vlan 100[SwitchA-Ethernet1/1/2] quit[SwitchA] interface ethernet 1/1/3[SwitchA-Ethernet1/1/3] igmp-snooping host-join 232.1.1.1 vlan 100[SwitchA-Ethernet1/1/3] quit1.8.2 IGMP Snooping Querier ConfigurationI. Network requirementsz As shown in Figure 1-4, in a Layer-2 network environment without Layer-3 devices,Switch C is connected to the multicast source (Source) through Ethernet1/1/2. Atleast one receiver is attached to Switch B and Switch C respectively.z All the receiver hosts run IGMPv2. Switch A, Switch B, and Switch C run IGMPSnooping. Switch A is to be configured as the IGMP Snooping querier.z Configure a non-all-zero IP address as the source IP address of IGMP queries toensure normal creation of multicast forwarding entries.