Hello Ron,
thanks for help and please excuse my bad english.
Now i put the address, wich you mean with following commandlines
set forwarding-options helpers bootp relay-agent-option
set forwarding-options helpers bootp server 192.168.50.227
set forwarding-options helpers bootp maximum-hop-count 4
set forwarding-options helpers bootp minimum-wait-time 1
but the DHCP would not work.
It is possible that a route is missing between vlans trust and developer?
kindly regards
Denis