Differences between the three multicast-related routing tables on an S series switch

On an S series switch, the following tables are generally searched for MFIB entries: PIM routing table, multicast routing table, and multicast.
- A PIM routing table contains entries generated by PIM at the protocol layer. You can view source and group information learned by PIM at the protocol layer in a PIM routing table.
- A multicast routing table associates the protocol layer with the MFIB module. Entries at the protocol layer are stored in a multicast routing table before being delivered. Entries stored in the MFIB module must be the same as those stored in the multicast routing table.
- A multicast forwarding table contains entries stored in the MFIB module. The MFIB module stores forwarding entries delivered from the protocol layer in the multicast forwarding table. The forwarding entries are then delivered to the multicast module of a switch. Normally, entries stored in the multicast forwarding table must be the same as those stored in the multicast routing table.

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