Best posts made by Flavalf

Good news everyone !

One more time, FOG was not faulty but the NETWORK …
After checking again Forums on multicasting and similar problems, I’ve found the solution :

The querier switch must have an IP adress on the subnet …

Once I’ve made the change, I tested a 4 client multicast session : total success !
So I tried with a classroom of 19 clients : in 30 min ( 1.5Gbps/min, max speed with 100Mbits connections ), all images were downloaded !

So, maybe it would be interesting for others to include these advices in the wiki or the troubleshooting Multicast page :

1. enable IGMP snooping on VLAN concerned in all switches

Choose 1 "master switch ( for me the all gigabit one under fogserver ) and make the following only for this one :

2. assign an IP adress to the VLAN in the switch configuration in the subnet range
3. enable IGMP query on the VLAN
4. verify the switch has Active Group Addresses
5. Enjoy !!!

Thanks again at all the FOG team

@Sebastian-Roth You’re welcome …
For info, my switches are HP Procurve and I used these links to configure them !

https://community.spiceworks.com/how_to/26481-enable-igmp-on-hp-procurve

http://whp-hou9.cold.extweb.hp.com/pub/networking/software/AdvTraff-Oct2005-59908853-Chap04-IGMP.pdf

Now, Multicast is working properly : I imaged 3 clients at 1.4 Gb/min, next I will try 10 or more !

FOG 1.2.0 on Debian
Lycée Guillaume Apollinaire, Thiais, Paris Area, France
~500 Desktops PC Windows 7
Discovered and installed FOG in 2014
We’re teachers in a public college grade organization, and in charge of the local network for teachers and students. FOG really saves a lot of time for us for deploying and maintaining computers. At this time, we have a single master W7 image made on VirtualBox with all the software needed. As we have a lot of different hardware, we include in the image all the drivers and then sysprep.
We use FOG’s ability to rename PCs and join to our domain and run a script with DPinst to install drivers and activate Windows’s MAK.
The amazing point is that all we have to do is click on download from any web browser, and when we come to see the machines, they’re ready to use !!!
So, thanks a lot to the founders and developers.

Hi, feedback on my issue : it was ( as usual ) a network cause.
IGMP was enable on switches but no switch was querier and no multicast group has been set.

Now , the 1 client test is ok, I can go further and make it works !
Thanks for support.