Multicast/Informacast Issue

[mediaos718]

We have a paging system (Cisco CCUM) that sends broadcast messages to speakers using multicast. Sometimes we are unable to hear the audio in some speakers or we only hear a part of the messages. We have a 10Gig network - We do not think that it is latency issue. We can see the (S,G) in all the hops. Can someone help me to fix this issue?

[balaji.bandi]

Is there any NAT Tranlation in the path ? how is your network connected, where do you see this loss, how end point conneccted.

This require more input from you with network diagram for us to understand. and your configuraiton where require for us

[mediaos718]

* There is no NAT in the environment.

* We performed a capture at the access layer, we saw fewer packets when the audio was not playing - We did not see any multicast issue (The S,G was there). 

* Today, I will do a capture on the core.

* See attached for a network diagram.

NOTE: We are running Cisco DNA with Border and Fusion routers.