Hi,
I have a simple scenario of hub and spoke frame-relay. R1-R2-R3. I opt to
use pim nbma with sparse mode under the R2 interface to allow multicast
traffic from R1 to flow to R3.
However due to the fact I was using rip , the next hop remains unchanged
for all routes propagated from spoke to spoke. The RP is connected to the
hub R2. the source x.x.x.x is connected to R1 . A show ip mroute on R3 is
as follows..
(*, 232.2.2.2), 04:40:25/stopped, RP 172.16.200.13, flags: SJCL
Incoming interface: Serial0/0/0:0, RPF nbr <R2 address>
Outgoing interface list:
Loopback102, Forward/Sparse, 04:40:25/00:02:24
(x.x.x.x, 232.2.2.2), 00:06:07/00:00:43, flags: LJT
Incoming interface: Serial0/0/0:0, RPF nbr <R1 address>
Outgoing interface list:
Loopback102, Forward/Sparse, 00:06:07/00:02:24
So on the shared tree, all is well but when it switches to the source based
tree , the pings dont go through.
When I apply an mroute x.x.x.x 255.255.255.255 <R2 address> it works!
Is this a rule of pim nbma that the hub must be seen as rpf neighbor?
Regards,
Maureen
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