FortiGate PIM-SM debugging examples

Viewing the multicast routing table (FGT-1)

FGT-1 again has some differences with regard to the PIM-SM states, there is no *,G entry because it is not in the path of a receiver and the RP.

FGT-1_master # get router info multicast pim sparse-mode table

IP Multicast Routing Table

(*,*,RP) Entries: 0 (*,G) Entries: 0 (S,G) Entries: 1 (S,G,rpt) Entries: 1

FCR Entries: 0

Below the S,G is the SPT termination because this FortiGate unit is the first hop router, the RPF neighbor always shows as because the source is local to this device. Both the joined and outgoing fields show as external because the PIM join and the stream is egressing on this interface.

(, RPF nbr:

RPF idx: None

SPT bit: 1

Upstream State: JOINED Local:

Joined: external Asserted: Outgoing: external

The stream has been pruned back from the RP because the end-to-end SPT is flowing, there is no requirement for the stream to be sent to the RP in this case.

(,, rpt) RP:

RPF nbr:

RPF idx: external

Upstream State: RPT NOT JOINED Local:

Pruned: Outgoing:

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