MikroTik

Posted: **Thu Jun 04, 2020 11:38 pm**

Hi,
I wanted to route MC between two Subnets. VLAN10 and VLAN30. The MC Address is 239.255.255.250 and traffic should be routed for VLAN10 to VLAn30 and the other way around.
There is only one Bridge with VLAN-Filtering on. I have also enabled IGMP Snooping on the Bridge. There is no FW - Rule between VLAN 10 and VLAN 30; Everything is being forwarded between the Subnets.
PIM interfaces are VLAN10 and VLAN30, RP is the GW of VLAN10.

I can see MC packages between VLAN 30 and VLAN 10, but I cannot see any packages between VLAN 10 and VLAN 30. I am not sure why, but it seems to be something wrong with the configuration. Maybe the Bridge settings for IGMP-Forward are not ok. I am also wondering why vlan10 is excluded from IGMP-Group as shown in the group extract below.

/routing pim igmp-group> print
Flags: v1 - IGMPv1, v2 - IGMPv2, v3 - IGMPv3, I - include, E - exclude, F - forward, D - don't forward 
    INTERFACE                                                                                         GROUP           SOURCE          TIMEOUT             
v1E vlan10                                                                                            224.0.1.60      0.0.0.0         4m5s                
v2E vlan10                                                                                            239.2.0.252     0.0.0.0         2m42s               
v2E vlan10                                                                                            239.255.255.250 0.0.0.0         4m7s

I can see "Joins" in PIM from Clients in both networks with Group Address 239.255.255.250 and the state "joined" but "join register state" = unknown. I am not sure if this is correct.
Thanks,
Spartacus.

MikroTik

PIM Issue

PIM Issue