i have replaced rb260 with ccs106-5g-1s fw 2.6 with the SAME config and multicast stop working... stb is accessible, vlan works also, epg there, middlweare wokring, but NO audio/video stream... if i enable IGMP in SYSTEM also in VLANS iptv (2990) VLAN on that switch, it is working BUT the whole IPTV streams from streamers are on the SFP port cca 300mbit... this is not what i want... is the IGMP snooping function included IGMP Querrier???? WHY is multicast NOT working withOUT IGMP enabled when on normal RB260GS it was working like a charm with the SAME config?

i have replaced rb260 with ccs106-5g-1s fw 2.6 with the SAME config and multicast stop working...

Have the very same problem.
RB260GS (CSS106-5G-1S).
Reverted to 2.4.

Tell me, have you tried to disable the "IGMP snooping" checkbox, will multicast work in that case?

the main problem is that multicast is NOT working on that switch with igmp disabled... offcourse i try to disable igmp snooping and multicast was not flowing... with igmp snooping on multicast is flowing but whole streams from iptv multicast streamers are on the uplink port cca 230-300mbit this is not acceptable...

2.7, RB260GS - multicast does not work.
IGMP snooping = ON or OFF - does not matter, same blank screen.

Can anyone check the latest 2.8 version for multicast?