104
[SwitchB-Vlan-interface200] quit
[SwitchB] interface vlan-interface 201
[SwitchB-Vlan-interface201] pim dm
[SwitchB-Vlan-interface201] quit
# Enable IP multicast routing on Switch C, enable PIM-DM on each interface, and enable IGMP on
VLAN-interface 200.
<SwitchC> system-view
[SwitchC] multicast routing-enable
[SwitchC] interface vlan-interface 200
[SwitchC-Vlan-interface200] igmp enable
[SwitchC-Vlan-interface200] pim dm
[SwitchC-Vlan-interface200] quit
[SwitchC] interface vlan-interface 202
[SwitchC-Vlan-interface202] pim dm
[SwitchC-Vlan-interface202] quit
3. Verify the configuration
Use the display igmp interface command to view the IGMP configuration and operation status on each
switch interface. For example:
# Display IGMP information on VLAN-interface 200 of Switch B.
[SwitchB] display igmp interface vlan-interface 200
Vlan-interface200(10.110.2.1):
IGMP is enabled
Current IGMP version is 2
Value of query interval for IGMP(in seconds): 60
Value of other querier present interval for IGMP(in seconds): 125
Value of maximum query response time for IGMP(in seconds): 10
Querier for IGMP: 10.110.2.1 (this router)
Total 1 IGMP Group reported
SSM mapping configuration example
Network requirements
The PIM-SM domain applies both the ASM model and SSM model for multicast delivery. Switch D’s
VLAN-interface 104 serves as the C-BSR and C-RP. The SSM group range is 232.1.1.0/24.
IGMPv3 runs on Switch D’s VLAN-interface 400. The receiver host runs IGMPv2, and does not support
IGMPv3. The Receiver host cannot specify expected multicast sources in its membership reports.
Source 1, Source 2, and Source 3 send multicast packets to multicast groups in the SSM group range.
Configure the IGMP SSM mapping feature on Switch D so that the receiver host will receive multicast
data from Source 1 and Source 3 only.
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