Viewing the multicast routing table (FGT-2)
If you check the output on FGT-2 there are some small differences:
FGT-2 # get router info multicast pim sparse-mode table
IP Multicast Routing Table
(*,*,RP) Entries: 0 (*,G) Entries: 1 (S,G) Entries: 1 (S,G,rpt) Entries: 1
FCR Entries: 0
(*, 239.255.255.1) RP: 192.168.1.1
RPF nbr: 0.0.0.0
RPF idx: None
Upstream State: JOINED Local:
Joined: external Asserted: FCR:
The *,G entry now has a joined interface rather than local because it has received a PIM join from FGT-3 rather than a local IGMP join.
(10.166.0.11, 239.255.255.1) RPF nbr: 10.130.0.237
RPF idx: internal
SPT bit: 1
Upstream State: JOINED Local:
Joined: external Asserted: Outgoing: external
The S,G entry shows that we have received a join on the external interface and the stream is being forwarded out of this interface.
(10.166.0.11, 239.255.255.1, rpt) RP: 192.168.1.1
RPF nbr: 0.0.0.0
RPF idx: None
Upstream State: PRUNED Local:
Pruned: Outgoing: External
The S,G,RPT is different from FGT-3 because FGT-2 is the RP, it has pruned back the SPT for the RP to the first hop router.
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