Let me first describe my installation.
Site 1 is a tower site near town. It has a cable modem, a RB750, a 5Ghz AP, and a radar.
Site 2 is the office. It has the 5GHz CPE, a RB2011UAS-2HnD, and all of office LAN computers. Both 5GHz units are set to allow multicast traffic.
Site 1 uses 192.168.88.x addresses supplied by the RB750. The office CPE uses a 192,168.88.x address as does port 1 of the RB2011.
Site 2 (except for the CPE) uses 192.168.42.x addresses supplied by the RB2011. On the RB2011, only 3 ports plus the wireless is in use. Port 1 (named ‘Tower’) goes to the CPE and has a 192.168.88.x address and the others are in a ‘switched group’ together. Port2 is named ‘Inside’ and port4 is named ‘Airave’, and wireless is named ‘wireless’. All other ports are disabled.
The radar unit at Site 1 has an interface box that allows access to the scanner via TCP/IP. The interface box has been assigned the address of 192.168.88.250. At the office there is a PC with the software that talks to the interface box. It is at 192.168.42.43.
The software has a ‘discovery’ button that causes a multicast message to go out on 236.6.7.5:6878 from the PC. The purpose of the multicast is to get any available interface boxes to multicast a reply. I know the multicast from the PC is going out because on the RB2011 at Site 2, I can see it when using the packet sniffer. The multicast appears as 4 nearly identical entries; the same except that each shows a different interface: Port2, Port3, Wireless, and bridge-local.
When I run the packet sniffer on the RB750 at Site1 (looking for any traffic on port 6878), I never see any frames. Something must not be set up right.
Here is my PIM config on the RB2011 at Site2 (the source of the multicast).
[xxxxx@MikroTik] /routing pim> pri
switch-to-spt: yes
switch-to-spt-interval: 1m40s
switch-to-spt-bytes: 0
[xxxxx@MikroTik] /routing pim> int pri
Flags: X - disabled, I - inactive, D - dynamic, R - designated-router,
v1 - IGMPv1, v2 - IGMPv2, v3 - IGMPv3
# INTERFACE PROTOCOLS
0 Rv2 Tower pim
igmp
1 v2 all pim
igmp
2 DRv2 bridge-local pim
igmp
3 DR register pim
[xxxxx@MikroTik] /routing pim> igm pri
Flags: v1 - IGMPv1, v2 - IGMPv2, v3 - IGMPv3,
I - include, E - exclude, F - forward, D - don't forward
INTERFACE GROUP SOURCE TIMEOUT
v2E Tower 233.89.188.1 0.0.0.0 3m45s
v2E Tower 236.6.7.4 0.0.0.0 3m47s
v2E Tower 236.6.7.5 0.0.0.0 3m45s
v2E Tower 236.6.7.10 0.0.0.0 3m43s
v2E Tower 236.6.7.13 0.0.0.0 3m43s
v2E Tower 236.6.7.14 0.0.0.0 3m43s
v2E Tower 236.6.7.20 0.0.0.0 3m41s
v2E bridge-local 224.0.0.1 0.0.0.0 2m37s
v2E bridge-local 224.0.0.2 0.0.0.0 2m45s
v2E bridge-local 224.0.0.13 0.0.0.0 2m40s
v2E bridge-local 224.0.0.22 0.0.0.0 2m41s
v2E bridge-local 224.0.1.127 0.0.0.0 2m37s
v2E bridge-local 233.233.233.233 0.0.0.0 2m39s
v2E bridge-local 236.6.7.5 0.0.0.0 2m36s
v2E bridge-local 239.71.0.0 0.0.0.0 2m37s
v2E bridge-local 239.192.152.143 0.0.0.0 2m43s
v2E bridge-local 239.255.255.250 0.0.0.0 2m38s
v2E bridge-local 239.255.255.253 0.0.0.0 2m36s
Please help me get my multicasts to the tower and the radar’s multicast traffic back from the tower.
Thank you for your time,
Dave