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This video covers how to troubleshoot a fairly common issue of phones not receiving audio from the InformaCast server. The method demonstrated in this video is pcaps, and the InformaCast performance log. You can also use the tool below:
https://www.singlewire.com/tools/multicast-testing-tool
NOTE: If you are using Meraki switches, they have IGMP snooping enabled by default. This can cause issues and needs to be disabled by Meraki. Once you contact them and have them disable IGMP snooping, test the paging again.
Get packet Captures From Phone and InformaCast
Gather a packet capture from one of the phones (you can also use SPAN if needed) that should be receiving audio, and gather a packet capture from the CLI of InformaCast with these steps:
1. Connect to the CLI of the Informacast box via SSH
2. Execute this command to start capturing and create a file named "test.cap"
sudo capturePackets test.cap
3. Page out to the phones that aren't working
4. Hit Ctrl+c to end the pcap
5. Execute ls to ensure the packet capture is on the box
6. use SFTP or Secure Copy (SCP) in order to transfer the file to your PC
This is how it will look when you start the capture and then hit ctrl+c to end the capture
Get the performance log from InformaCast
https://X.X.X.X:8444/InformaCast/logs/performance.log
Where X.X.X.X is the ip address of Informacast.
Or you can navigate to the log through the GUI:
Hover over help, then click on Support. After that click on the Performance Log hyperlink.
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