Hello.
I have 3 routers that are configured PIM. Diagram attached.
Client (behind R3 router) tries to connect to a group of 239.195.0.25
Rendezvous point is R0. Distributed dynamically by the bootstrap.
R0 ------------------------------------
R0#sh ip mroute 239.195.0.25
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel
Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 239.195.0.25), 2d14h/00:02:48, RP 10.60.254.1, flags: S
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan4, Forward/Sparse, 00:08:41/00:02:48
(93.100.195.78, 239.195.0.25), 2d05h/00:02:26, flags: PMT
Incoming interface: Vlan4090, RPF nbr 172.23.244.57, Mroute, RPF-MFD
Outgoing interface list: Null
R1 ----------------------------------------------------
[R1] > routing pim join p detail
Flags: RP - (*,*,RP), WC - (*,G), SG - (S,G), SG_rpt - (S,G,rpt)
WC group=224.0.0.0 source=10.10.0.1 rp=10.10.0.1 upsteam-interface-rp=R0
join-state=not-joined i-am-designated-router=R3 joined-rp=""
joined="" pruned="" prune-pending="" could-assert-wc=""
immediate-rp="" immediate-sg-rpt=""
WC group=224.0.0.0 source=10.60.254.1 rp=10.60.254.1
upsteam-interface-rp=R0 join-state=not-joined
i-am-designated-router=R3 joined-rp="" joined="" pruned=""
prune-pending="" could-assert-wc="" immediate-rp=""
immediate-sg-rpt=""
WC group=224.0.0.0 source=172.23.244.58 rp=172.23.244.58
upsteam-interface-rp=R0 join-state=not-joined
i-am-designated-router=R3 joined-rp="" joined="" pruned=""
prune-pending="" could-assert-wc="" immediate-rp=""
immediate-sg-rpt=""
SG group=239.195.0.25 source=0.0.0.0 rp=10.60.254.1
upsteam-interface-rp=R0 upsteam-pim-nexthop=193.169.62.17
join-state=joined timeout=25s local-receivers=""
i-am-designated-router=R3 joined-rp="" joined-wc="" joined=R3
pruned="" prune-pending="" assert-winner="" assert-loser=""
assert-winner-wc="" assert-loser-wc="" assert-tracking-wc=R3,R0
could-assert-wc=R3 immediate-rp="" immediate-wc=R3
immediate-sg-rpt=R3 include-wc=""
group=239.195.0.25 source=93.100.195.78 rp=10.60.254.1
upsteam-interface-rp=R0 upsteam-pim-nexthop=193.169.62.17
join-state=rpt-pruned local-receivers="" i-am-designated-router=R3
joined-rp="" joined-wc="" joined="" pruned=R3 prune-pending=""
assert-winner-wc="" assert-loser-wc="" could-assert-wc=R3
immediate-rp="" immediate-wc=R3 immediate-sg-rpt="" include-wc=""
R3 -------------------------------------------------------
[R3] > routing pim join p detail
Flags: RP - (*,*,RP), WC - (*,G), SG - (S,G), SG_rpt - (S,G,rpt)
WC group=224.0.0.0 source=10.60.254.1 rp=10.60.254.1
upsteam-interface-rp=R1 join-state=not-joined
i-am-designated-router=LAN joined-rp="" joined="" pruned=""
prune-pending="" could-assert-wc="" immediate-rp=""
immediate-sg-rpt=""
SG group=239.195.0.25 source=0.0.0.0 rp=10.60.254.1
upsteam-interface-rp=R1 upsteam-pim-nexthop=193.169.62.26
join-state=joined timeout=17s local-receivers=LAN
i-am-designated-router=LAN joined-rp="" joined-wc="" joined=""
pruned="" prune-pending="" assert-winner="" assert-loser=""
assert-winner-wc="" assert-loser-wc="" assert-tracking-wc=R1,LAN
could-assert-wc=LAN immediate-rp="" immediate-wc=LAN
immediate-sg-rpt=LAN include-wc=LAN
SG group=239.255.255.250 source=0.0.0.0 join-state=joined timeout=37s
local-receivers=LAN i-am-designated-router=LAN joined-rp=""
joined-wc="" joined="" pruned="" prune-pending="" assert-winner=""
assert-loser="" assert-winner-wc="" assert-loser-wc=""
assert-tracking-wc=LAN could-assert-wc=LAN immediate-rp=""
immediate-wc=LAN immediate-sg-rpt=LAN include-wc=LAN
group=239.195.0.25 source=93.100.195.78 rp=10.60.254.1
upsteam-interface-src=R1 upsteam-interface-rp=R1
upsteam-pim-nexthop=193.169.62.26 join-state=rpt-pruned
local-receivers=LAN i-am-designated-router=LAN joined-rp=""
joined-wc="" joined="" pruned="" prune-pending=""
assert-winner-wc="" assert-loser-wc="" could-assert-wc=LAN
immediate-rp="" immediate-wc=LAN immediate-sg-rpt=LAN
include-wc=LAN
SG_rpt group=239.195.0.25 source=93.100.195.78 rp=10.60.254.1
upsteam-interface-src=R1 upsteam-interface-rp=R1 join-state=joined
join-register-state=unknown timeout=47s keepalive-timer=yes
local-receivers=LAN i-am-designated-router=LAN joined-rp=""
joined-wc="" joined="" pruned="" prune-pending="" assert-winner=""
assert-loser="" assert-winner-wc="" assert-loser-wc=""
could-assert-wc=LAN immediate-rp="" immediate-wc=LAN
immediate-sg="" immediate-sg-rpt=LAN include-wc=LAN
Question: Why between R1 and R3 is killed route to build SPT tree? This is seen in R1 - indicated pruned = R3
In what could be the reason?
