Confused about DNS on Windows SBS 2003

We have a Windows SBS 2003 box in our small company's network that acts as a
DCHP server and Router using RRAS. For sometime now, the DHCP service on the
server has been shutdown; but workstations running Windows XP Pro on our
network still display that their IP addresses were DHCP assigned. I don't
understand how the DHCP server can be down, and users are still able to
acquire their IP address from the Windows SBS 2003 box; their assigning DHCP
server address still points to the Windows SBS 2003 box.

Is there any other service in Windows SBS 2003 that allocate IP addresses
dynamically apart from the DHCP service? If "yes", how can I stop this other
service from allocating IP addresses to workstations on the network?

Second Question:
Must the reserved addresseses in a DHCP server be within or outside the
address pool currently in use by the server?

Thanks

Possibly RRAS/NAT is configured to provide DHCP - see:

http://support.microsoft.com/kb/816581/en-us

A DHCP reservation can be configured for an IP excluded from the scope as
long as it is actually the same subnet. The purpose of this is to allow
reservations to span backup DHCP servers on the same subnet - see:

http://www.microsoft.com/technet/pro.../library/Serve
rHelp/78171281-13f4-4446-8ee2-431cb79ae6df.mspx

Doug Sherman
MCSE, MCSA, MCP+I, MVP

"User16/6/81" <(E-Mail Removed)> wrote in message
news:C22B1BD8-8C0E-4E0F-A9B9-(E-Mail Removed)...
> We have a Windows SBS 2003 box in our small company's network that acts as
a
> DCHP server and Router using RRAS. For sometime now, the DHCP service on
the
> server has been shutdown; but workstations running Windows XP Pro on our
> network still display that their IP addresses were DHCP assigned. I don't
> understand how the DHCP server can be down, and users are still able to
> acquire their IP address from the Windows SBS 2003 box; their assigning
DHCP
> server address still points to the Windows SBS 2003 box.
>
> Is there any other service in Windows SBS 2003 that allocate IP addresses
> dynamically apart from the DHCP service? If "yes", how can I stop this
other
> service from allocating IP addresses to workstations on the network?
>
> Second Question:
> Must the reserved addresseses in a DHCP server be within or outside the
> address pool currently in use by the server?
>
> Thanks