Hi,
You should issue "show pim interface" to know whether interface you configured PIM onto is considered as P2P or not.
For instance:
r1# run show pim interfaces
Stat = Status, V = Version, NbrCnt = Neighbor Count,
S = Sparse, D = Dense, B = Bidirectional,
DR = Designated Router, DDR = Dual DR, DistDR = Distributed DR,
P2P = Point-to-point link, P2MP = Point-to-Multipoint,
Active = Bidirectional is active, NotCap = Not Bidirectional Capable
Name Stat Mode IP V State NbrCnt JoinCnt(sg/*g) DR address
ge-1/0/0.102 Up S 4 2 DR,NotCap 0 0/0 x.x.x.x
ge-1/0/0.200 Up S 4 2 DR,NotCap 0 0/0 x.x.x.x
ge-1/0/0.201 Up S 4 2 DR,NotCap 0 0/0 x.x.x.x
ge-1/0/1.1 Up S 4 2 DR,NotCap 0 0/0 x.x.x.x
ge-1/0/1.21 Up S 4 2 DR,NotCap 0 0/0 x.x.x.x
gr-1/0/0.1 Up S 4 2 P2P,NotCap 0 0/0
lo0.1 Up S 4 2 DR,NotCap 0 0/0 x.x.x.x
pd-1/0/0.360449 Up S 4 2 P2P,NotCap 0 0/0
ge-1/0/0.102 Up S 6 2 DR,NotCap 0 0/0 fe80::f21c:2d00:66c9:xxx
ge-1/0/0.200 Up S 6 2 DR,NotCap 0 0/0 fe80::f21c:2d00:c8c9:xxx
ge-1/0/0.201 Up S 6 2 DR,NotCap 0 0/0 fe80::f21c:2d00:c9c9:xxx
ge-1/0/1.1 Up S 6 2 DR,NotCap 0 0/0 fe80::f21c:2d00:1c9:xxx
ge-1/0/1.21 Up S 6 2 DR,NotCap 0 0/0 fe80::f21c:2d00:15c9:xxx
lo0.1 Up S 6 2 DR,NotCap 0 0/0 fe80::f21c:2d0f:fcc9:xxx
Also, p2p link logically means there is only one router on the other end.
r1# run show pim interfaces | match p2p
P2P = Point-to-point link, P2MP = Point-to-Multipoint,
gr-1/0/0.1 Up S 4 2 P2P,NotCap 0 0/0
pd-1/0/0.360449 Up S 4 2 P2P,NotCap 0 0/0
Means no DR on p2p. You configure DR on p2p if required by configuring "dr-election-on-p2p"
and When a point-to-point link interface is elected to be the DR, the interface state becomes DR instead of P2P.
[edit routing-instances PIM.master protocols pim]
View the following doc for more info:
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/multicast-config-pim-dr-p2p.html