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overriding Dhcp (setting a static IP) and the DNS advanced settings on WIN7 & WINXP desktops  (including WINS)

Posted on 2011-09-16
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Last Modified: 2012-05-12
Here are similar questions with different wording:
1)      Does overriding DHCP require you to manually configure the DNS server settings, such as Domain Name System (DNS) and Windows Internet Name Service (WINS)?
2)      If you set a static IP, must you also configure the DNS server settings, such as Domain Name System (DNS) and Windows Internet Name Service (WINS) on an windows XP or 7 Client?

I think these are the answers:
o      You only have to override the default settings if the DHCP/DNS  server is not set up to supply the necessary information.  
o      If WINS isn’t working on our clients, it should be set up on the DHCP server. Since Windows NT, LAN/Domain admins can set IP, WINS & DNS settings both via the DNS services of the DHCP server settings.
o      If we can’t  figure out how to do that, that setting could be pushed to the clients via a remote desktop management tool (via SCCM  or Group Policy ).   We should be able to get away from manually entering WINS on every machine in the advanced DNS settings tabs..
o      We should do central static IPs via DHCP by storing and leasing the MAC address of the static machines on the DHCP server, -- until we do so we will be unable to use other remote technologies (like pushing OSes to the desktop)!  
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Question by:collink
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by:noci
ID: 36552575
If you stop asking DHCP queries for the IP address then the other stuff needs to be specified TOO.
so it is either DHCP for all kinds of stuff, or NONE at all.

You can use reservations if you want a particular system to use a particular IP address.
Reservations are done using the MAC address of a system
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by:collink
ID: 36552649
Thanks Noci.
Our DNS servers and DNS Suffixes are supplied somehow, to the clients.  Group Policy supplies the DNS suffixes and the DNS servers are being supplied perhaps by the DC, server or routers. However,  although our network is set up to supply the DNS information even when a static IP is coded, the only item that is not supplied is the default WINS server.  

We also have problems of DHCP leases not being obtained across WAN. so that we get IP conflicts when we plug a DHCP machine from one scope into a different scope.  Users get an IP conflict, must call up the helpdesk. HD staff must remove the DHCP lease from the scope, and try a  ipconfig /renew to get it an new IP.  

 It seems our DHCP, DNS, and WINS and scope settings are a mess -- and they need to be cleaned up.  Ideally we'd be able  to move to Mac address reservation. The domain admins seem to be worried about the work involved in administering the DHCP reservations, but I've heard that, once it is set up, it is quite a time and labor saving.  

What would be the best way to get that WINS info to all the clients too
 And,  with about 320 workstations (about 10-20 at every site/floor) that must use particular IP --  just how difficult is DHCP reservation administration?  We have at about 32 scopes/sites/floors in an enterprise enviroment.
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noci earned 250 total points
ID: 36553344
Ah group policies, yep that's correct they can be used too (I didn't assume a pure windows setup though).

You cannot get DHCP across a router unless you have DHCP-relays / DHCP-helpers in the lan segments.
(The nature is of DHCP is that a  broadcast used to request info, that is by definition limitted to the LAN youre in.)

You only setup MAC reservation for servers f.e. or systems that realy require a fixed address.
The best thing is to use DHCP-relay support in routers.
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