Which statement about the RPF interface in a BIDIR-PIM network is true?
A.
In a BIDIR-PIM network, the RPF interface is always the interface that is used to reach the PIM
rendezvous point.
B.
In a BIDIR-PIM network, the RPF interface can be the interface that is used to reach the PIM
rendezvous point or the interface that is used to reach the source.
C.
In a BIDIR-PIM network, the RPF interface is always the interface that is used to reach the source.
D.
There is no RPF interface concept in BIDIR-PIM networks.
RPF stands for “Reverse Path Forwarding”. The RPF Interface of a router with respect to an
address is the interface that the MRIB indicates should be used to reach that address. In the case
of a BIDIR-PIM multicast group, the RPF interface is determined by looking up the Rendezvous
Point Address in the MRIB. The RPF information determines the interface of the router that would
be used to send packets towards the Rendezvous Point Link for the group.
Reference. https://tools.ietf.org/html/rfc5015
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I think RFP will be towards source on the source side of the RP and towards the RP on the receiver side of the RP
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