95
# 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
4. Configure a multicast group filter on Switch A, so that the hosts connected to VLAN-interface 100
can join only multicast group 224.1.1.1.
[SwitchA] acl number 2001
[SwitchA-acl-basic-2001] rule permit source 224.1.1.1 0
[SwitchA-acl-basic-2001] quit
[SwitchA] interface vlan-interface 100
[SwitchA-Vlan-interface100] igmp group-policy 2001
[SwitchA-Vlan-interface100] quit
Verifying the configuration
# 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. Therefore, 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. You
can 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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