Figure 2 Poor stream (mosaic and blur)
When a multicast client receives no stream, two things may occur:
l Screen remains dark and no video nor audio.
l Image remains frozen right before joining/leaving a different multicast
stream
If the multicast client receives stream but with poor quality, go to step 2.
If the multicast client does not receive any stream from any multicast address, go to
step 4.
Is IGMP routing or snooping enabled with “unknown
multicast frames: drop” on the switches between server and
clients?
An IPTV service can still function even without IGMP enabled. The purpose of IGMP is
actually to optimize bandwidth within the network by preventing unwanted
multicast flooding.
Using Web GUI:!
Figure 3 IP Application > IGMP
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