@fgutvar Yes the server is in a WMWARE VCenter deployed in a C class and the clients e.g. 10.137.109.xxx.
I guess that this should be a VLAN or switch filtering problem. I’ll try a lab for 2 clients in the 10.137.102.xxx to corroborate this suspicion.

Thanks.

@george1421 I had images stored in my server at 10.137.102.150 and in a NAS 10.137.102.248. This multicast session is started with a image stored on the server.

I don’t know exactly the param value that are you asking me for in the (.fogsettings).

ipadress=‘10.137.102.150’
hostname=‘gaptffog1’

Thanks in advance.

My Server is a CentOS 7 with FOG updated to version 1.5.9.114 where we have already displayed images for more than 1 year, but we had not tried using MULTICAST. Setting are as follow:

The images are stored on the local server /images and a Sinology NAS.

We schedule a multicast session for 100 clients and 0 timeouts.

systemctl status FOGMulticastManager → Active (running)

We start a PC for deployment and join it to the active Multicast session, a task is automatically created for that client in the active tasks view.

On the PC screen, a PartClone, Starting Restore box and the image to be displayed appear on a blue background, and the cursor is blinking, but no progress bar or other information appears.

On the Server, the logs file /opt/fog/lof/multicast.log appears repeatedly:

“Interface not ready, waiting for it to come up: 10.137.102.150”

Where is my mistake.

Thanks in advance.