Understanding PIM-SM
This section describes the multicast data forwarding process in a PIM-SM domain, PIM control message types, PIM reliability, and security functions required for the multicast service.
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PIM-SM Mechanism
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This section describes the related concepts and the multicast data forwarding process in a PIM-SM domain.
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PIM-SSM
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This section describes the related concepts and the multicast data forwarding process in a PIM-SSM domain.
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PIM-SM Control Message
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PIM-SM devices implement multicast by exchanging PIM-SM control messages.
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PIM-SM Security
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To ensure that multicast services are correctly transmitted on networks, PIM security is implemented to limit the valid BSR and C-RP address ranges, filter packets, and check PIM neighbors.