TFTP open Timeout

[ba19911]

Hi Everybody.

 

i Implemented SCCM 2012 to my environment.

i am using different Subnets 10.16.1.x,10.16.12.x, 10.16.100.x and so on

All subnets getting IP from the Same DHCP server "sittng" on subnet 10.16.1.x. in fact all my servers using this subnet.

 

of course i am using IP HELPER from ALL Routers to the DHCP Server And Configure Options 66,67 Right For Sure!!!

 

i made test of OSD on subnet 10.12.x.x and it is work fantastic!

 

but on any other Subnets I get TFTP open Timeout. i can see the client gets IP address from DHCP but nothing its thinking very long time but at the end It Fails!!

 

i Really cant think of any reason why its happening.

 

PLEASE HELP!

 

Thank U all.