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Okay, we have now set up the server and 3 clients in a controlled environment.
They all get their images - and boot into the FOG kernel.
The Screen gets to this point - ie: no “Please Wait” screen
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The FOGMulticastManager is on - and logs every 10 seconds (Checking if I am the group Manager …)
(checked with ps aux |grep Multicast)
There is logging going on
The udp sender command is being executed (see the udp-sender gzip -d …)
The clients don’t ‘crash’ - they boot into their kernels and the stars appear.
What I am planning on doing in the morning is connecting 5-6 clients on a dumb switch (ie: take vlan out the picture) We are currently running alcatel switches and all the clients are on the same switch - but are VLAN tagged. I will report the results
Yep … works a charm … obviously when doing 40+ machines at a time - the speed slows to about 40MB / min. This is why we are trying to get multicasting working … Thanks for the replies so far 
Everything starts up fine 
That’s the strange part - other than a vesafb error - but that’s just graphics & has never interfered before …
So we are trying to do a multicast deployment. The task is started, and the clients are booted. All the clients eventually show a progress screen of stars:
The server logs the same message over and over:
Checking if I am the group manager
I am the group manager
And that’s it. These machines are all on the same VLAN, and multicasting is enabled on the switch. Yet nothing happens
Our network admin has seen the clients connect to the mcast group - yet the server never picks up any of these clients … so where do I start looking. We are using alcatel switches …
We are currenly using fog 0.32 deploying to about 500 PC’s
These PC’s are split into groups - but each time we do a bulk (csv) import of mac addresses, we need to go through each entry and assign a group to it manually. Is there a way to include the GroupID in an import ?
Then, the default view for All hosts - can we get a view that filters by group perhaps ?
These options may be available, but I have just not seen them.
Thanks for the great work guys !!
Which version are you using ? We had an issue with an earlier kernel - upgraded the kernel, and the speed improved. We are deploying an image to about 30 PC’s @ around 1.4GB /min