Simple multicast router configuration with MT CCR2116-12G-4S+, software version 7.14.3. Streamer Terra SDI480 is connected to the port ether1. A multicast client (PC) is connected to the sfp-sfpplus2 port. The streamer sends multicast groups 239.255.0.0/17. The PC connects to these multicast groups and receives IPTV traffic.
Configuration fragment:
/interface ethernet
set [ find default-name=ether1 ] name="ether1 SDI480 DVB-S"
set [ find default-name=sfp-sfpplus2 ] comment="MCSW SFP+1" name=sfp-sfpplus2_MULTICAST_OUT
/routing pimsm instance
add afi=ipv4 disabled=no name=LOCAL vrf=main
/ip address
add address=192.168.43.14/30 interface="ether1 SDI480 DVB-S" network=192.168.43.12
add address=192.168.43.254 comment="RP MULTICAST" interface=lo network=192.168.43.254
add address=192.168.44.254/24 interface=sfp-sfpplus2_MULTICAST_OUT network=192.168.44.0
/routing pimsm interface-template
add disabled=no instance=LOCAL interfaces="ether1 SDI480 DVB-S"
add disabled=no instance=LOCAL interfaces=sfp-sfpplus2_MULTICAST_OUT
/routing pimsm static-rp
add address=192.168.43.254 disabled=no group=239.255.0.0/17 instance=LOCAL
PROBLEM
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If we bring interface ether1 Down then Up, after this action MC is visible on the interface counter, but is no longer received on sfp-sfpplus2.
If we then disable and re-enable the /routing pimsm instance, the MC stream reappears on sfp-sfpplus2. -
If we disable and then enable /routing pimsm interface-template ether1, the MC stream on sfp-sfpplus2 disappears and no longer appears.
If we disable and then enable /routing pimsm instance, MC traffic is available on sfp-sfpplus2 again.
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I suppose that by disabling the ether1 interface and then re-enabling it, the IGMP protocol blocks the MC from entering the router (via ether1), and it only comes back after the /routing pimsm instance has been restarted (Disable/Enable).
How to solve this problem so that MC routing works after disconnecting/reconnecting the MC streamer?