Understanding PIM RPF Routing Tables

By default, PIM uses inet.0 as its reverse-path forwarding (RPF) routing table group. PIM uses an RPF routing table group to resolve its RPF neighbor for a particular multicast source address and for the RP address. PIM can optionally use inet.2 as its RPF routing table group. The inet.2 routing table is organized more efficiently for RPF checks.

Once configured, the RPF routing table must be applied to a PIM as a routing table group.

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