3Com 4210, 5500G, 4200G manual Configuring Igmp Snooping Only, Querier

138CHAPTER 16: MULTICAST CONFIGURATION GUIDE

Configuring IGMP

Snooping Only

Network Diagram Figure 37 Network diagram for IGMP Snooping only configuration

Querier

Eth1/0/1 Eth1/0/2

Switch A

Switch B

Eth1/0/1 Eth1/0/1

Switch C

Eth1/0/2	Eth1/0/3	Eth1/0/2	Eth1/0/3
Receiver	Receiver	Receiver	Source
Host A	Host B	Host C	1.1.1.1/24

Networking and Where it is unnecessary or infeasible to build a Layer 3 multicast network, enabling Configuration IGMP Snooping on all the devices in the Layer 2 network can implement some Requirements multicast functions.

1As shown in Figure 37, in a Layer 2 only network, Switch C connects to the multicast source through Ethernet 1/0/3. At least one receiver is attached to Switch B and Switch C respectively.

2Enable IGMP Snooping on Switch A, Switch B, and Switch C. Switch A acts as the IGMP Snooping querier.

3Enable Switch A and Switch B to drop unknown multicast traffic so that multicast traffic for unknown multicast groups are not flooded in the VLAN.

Application Product

Matrix	Product series	Software version	Hardware version
	Switch 5500	Release V03.02.04	All versions
	Switch 5500G	Release V03.02.04	All versions
	Switch 4500	Release V03.03.00	All versions
	Switch 4210	Release V03.01.00	All versions
Configuration Procedure	Configuring Switch A

# Enable IGMP Snooping globally.

<SwitchA> system-view

[SwitchA] igmp-snooping enable

Enable IGMP-Snooping ok.

#Create VLAN 100, assign Ethernet 1/0/1 through Ethernet 1/0/2 to VLAN 100, and enable IGMP Snooping in this VLAN.