Understanding PIM-DM
This section describes the multicast data forwarding process in a PIM-DM domain, PIM control message types, and security functions required for the multicast service.
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PIM-DM Mechanism
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This section describes the related concepts and the multicast data forwarding process in a PIM-DM domain.
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PIM-DM Control Message
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PIM-DM devices implement multicast by exchanging PIM-DM control messages.
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PIM-DM 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.