Hi all,
I have two Cisco 3845 routers which receive a multicast stram via a tunnel interface, i.e Tunnel163 (PIM Dense mode is enabled).
These routers are both connected to a LAN segment (FastEthernet0/1/0) where receivers are.
I observe the following very strange behavior:
Router1# show ip mroute 224.100.6.163 output (extract):
(192.168.163.22, 224.100.6.163), 00:32:57/00:02:38, flags: T
Incoming interface: Tunnel163, RPF nbr 173.1.163.2
Outgoing interface list:
FastEthernet0/1/0, Prune/Dense, 00:31:33/00:02:40, A
Router1# show ip pim neighbor fastEthernet 0/1/0 (extract)
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
100.1.6.252 FastEthernet0/1/0 00:23:21/850 msec v2 1 / S P G
Router1#show ip igmp groups 224.100.6.163 (extract)
IGMP Connected Group Membership
Group Address Interface Uptime Expires Last Reporter Group Accounted
224.100.6.163 FastEthernet0/1/0 5d01h 00:02:33 100.1.6.11
Router1 is the assert winner (highest IP address), it sees igmp joins request, but it's pruning the interface.
It's really confusing to me. It happens sometimes and it lasts until I manually issue clear ip mroute *
Unfortunately I cannot migrate to Sparse Mode, so I have to fix this problem.
Any help is really appreciated.
