OK, so here is what’s needed to switch FOG 1.2.0 between networks (interfaces):

FOG System Settings -> FOG Configuration:
* General Settings: FOG_WOL_HOST (change ip); FOG_WOL_INTERFACE (change iface)
* Multicast Settings: FOG_UDPCAST_INTERFACE (change iface)
* NFS Server: FOG_NFS_ETH_MONITOR (change iface)
* TFTP Server: FOG_TFTP_HOST (change ip)
* Web Server: FOG_WEB_HOST (change ip) Storage Management -> DefaultMember:
* IP Address (change ip)
* Interface: (no changes) /tftpboot/default.ipxe: change ip in last line change default gateway using ip command (to make wake on lan work - it uses default gw for broadcasts):
* ip r del default - delete current
* ip r add default via <gw for second network>

Yusuf,

We have the master server on our main site which has a single IP address, which we only use for mysql,web,pxe,tftp,wol(no images stored here). We have 5 FOG storage nodes 1 at each remote site and 1 at the main site, each storage node host images for that site to keep imaging traffic local. Each site has mutiple VLANS staff, students etc.

We have 2 Windows DHCP servers with split scopes at our main site serving over 50 VLANS for all sites.