changing subnets on domain controllers

We are going from a flat network with a 255.255.0.0 mask and subnetting into
different vlans. All of our servers will be in one vlan and do not need
their IPs changed howver the subnet mask will be 255.255.255.224. I have to
change these on the servers. Will this affect the domain controllers
communiction in any way? Especially in regards to DNS, DHCP, Active
Directory, WINs? The VLANs will be routing to each other on a layer 3 switch.

Hello 2010,

If they still able to reach each other after your changes not. Start with
the DC/DNS servers in the domain and after change run ipconfig /flushdns
and ipcnfig /registerdns and restart the netlogon service. Then go on with
the other servers.

For the clients make sure that DHCP servers can give address leases over
the router. Normally DHCP cannot be routed, except you have a router that
is able to forward DHCP requests or you have to use a DHCP relay agent in
the other subnets.

Best regards

Meinolf Weber
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> We are going from a flat network with a 255.255.0.0 mask and
> subnetting into different vlans. All of our servers will be in one
> vlan and do not need their IPs changed howver the subnet mask will be
> 255.255.255.224. I have to change these on the servers. Will this
> affect the domain controllers communiction in any way? Especially in
> regards to DNS, DHCP, Active Directory, WINs? The VLANs will be
> routing to each other on a layer 3 switch.
>