I think i can solve the problem, if i change mask of machines of both places and gss server. For example, Place 1 10.1.100.0/255.0.0.0, place 2 10.2.100.0/255.0.0.0 and gss server 10.0.100.1/255.0.0.0
In place 1 and 2 there is only 20 clients.
Do you know about this solution?
Thanks.