PIM-SM issue

RouterOS Forwarding Protocols
1

Hi all,

I had setup an PIM environment based on https://wiki.mikrotik.com/wiki/Manual:Multicast_detailed_example

sender---------------------------(eth2)RB3011(eth1)-----------------------------(eth1)RB2011(eth2)----------------------------------receiver
192.168.88.254 -------192.168.88.1(NAT)192.168.4.1-----------------192.168.4.2(NAT)192.168.99.1-----------------------192.168.99.254

Using VLC mdeia player as multicast sender and receiver.
The receiver cannot receive any multicast packet.
Furthermore, I cannot see any multicast packet in RB3011 eth1 by packet sniffer.

BTW, that is the alternative-subnet doing? Should I configure this in my environment?

Could anyone have any suggest?

2

I’m also tried to make multicast working across different subnets and may say that it’s not working.

3

I was able to get PIM-SM working fine between subnets, but I didn’t have NAT in between. Why are you using NAT?

Furthermore, I cannot see any multicast packet in RB3011 eth1 by packet sniffer.

If the RB3011 is in the same subnet as the Multicast source, it should be seeing the traffic unless there’s something like an IGMP sniffing switch in between. So maybe there’s your issue.

Thanks