If your AES67 network is using Cisco SG-300/SG-350 switches and you have followed some manufacturer referenced AES67 settings (For example LAWO), you may find the Dante Controller has no Grandmaster clock and lost control.

Open

please check the multicast Unregistered Multicast setting which may be “Filtering”

Solution:

• Shure suggests setting for Dante Multicast setting:

https://service.shure.com/s/article/configuring-sg300-switch-for-shure-devices-and-dante?language=en_US

Open

• Merging Technologies suggested settings for the AES67 network.

https://confluence.merging.com/pages/viewpage.action?pageId=51118530

https://merging.atlassian.net/wiki/spaces/PUBLICDOC/pages/4818859/Dante+devices+Multicast+Groups+configuration+-+Cisco+switches.

https://merging.atlassian.net/wiki/spaces/PUBLICDOC/pages/4819754/Cisco+SG300+350+Multiple+switches+configuration.

Dante AES67 users have to add IP Multicast Groups :

Go in IP Multicast Group Address and click on Add.  Enter VLAN ID 1 and 224.0.0.230 as IP Multicast Group Address.

Click on Apply, then select the 224.0.0.230 Group and click on Details.

Set the ports connected to Dante devices (including the computer that hosts Dante Controller) to Static and click on Apply.

Repeat the same operation for addresses 224.0.0.231, 224.0.0.232 and 224.0.0.233

(Example with Dante devices on port 9-10).