H3C Technologies H3C S3100V2 Series Switches - Manual (Page 50)

42
Configure IGMP snooping proxying on Switch A, enabling the switch to forward IGMP reports and leave
messages on behalf of attached hosts and to respond to IGMP queries from Router A and forward the
queries to the hosts on behalf of Router A.
Figure 16 Network diagram for IGMP snooping proxying configuration
Source
Router A
IGMP querier
Switch A
Proxy & Querier
Receiver
Host B
Host A
Host C
1.1.1.1/24
Eth1/0/4
Eth1/0/2
Eth1/0/3 Eth1/0/1
Eth1/0/1
10.1.1.1/24 Eth1/0/2
1.1.1.2/24
Receiver
Configuration procedure
1. Configure IP addresses for interfaces
Configure an IP address and subnet mask for each interface according to Figure 16 . The configuration
steps are omitted here.
2. Configure Router A
# Enable IP multicast routing, enable PIM-DM on each interface, and enable IGMP on Ethernet 1/0/1.
system-view
[RouterA] multicast routing-enable
[RouterA] interface ethernet 1/0/1
[RouterA-Ethernet1/0/1] igmp enable
[RouterA-Ethernet1/0/1] pim dm
[RouterA-Ethernet1/0/1] quit
[RouterA] interface ethernet 1/0/2
[RouterA-Ethernet1/0/2] pim dm
[RouterA-Ethernet1/0/2] quit
3. Configure Switch A
# Enable IGMP snooping globally.
system-view
[SwitchA] igmp-snooping
[SwitchA-igmp-snooping] quit
# Create VLAN 100, assign ports Ethernet 1/0/1 through Ethernet 1/0/4 to this VLAN, and enable
IGMP snooping and IGMP snooping proxying in the VLAN.
[SwitchA] vlan 100
[SwitchA-vlan100] port ethernet 1/0/1 to ethernet 1/0/4
[SwitchA-vlan100] igmp-snooping enable
[SwitchA-vlan100] igmp-snooping proxying enable