8
votes
2answers
523 views

Domain Controller offline for a few days

My primary domain controller died over the weekend, its motherboard is being replaced tomorrow. I have been told that the mac address of the server may change once the new motherboard is installed. ...
0
votes
1answer
40 views

Query DHCP with mac address

I am trying to create a dynamic IP resolver using python3 on linux to query a windows DHCP server and return the IP that it would be given. My purpose is to supply the returned IP address as a ...
1
vote
2answers
66 views

Sonicwall SSO with NPS

I have a SonicWall where I want to enable the RADIUS SSO capability. The article for doing this states the RADIUS server Send the user’s IP address in either Framed-IP-Address or Calling-Station-Id ...
0
votes
0answers
27 views

DHCP User Class ID Notation (numerical vs. ASCII)

Creating a new DHCP User Class (on Windows Server 2008 (R1) 32-Bit) on can set a "Display Name" – here SuperDuperClass – and define the User Class ID numerically (1st & 2nd column) or ...
0
votes
1answer
39 views

cmd: create dhcp superscope

On Windows Server 2008 (R1, 32-Bit) I've got that far to create a superscope on the command line via cmd, not PowerShell (yay!) through netsh dhcp server \\SERVER scope IP.ADD.RE.SS set superscope ...
3
votes
1answer
184 views

On Windows 2008 R2, how do I back up DHCP if the DHCP .mdb database is always busy?

I get this from my backup software. C:\WINDOWS\system32\dhcp\dhcp.mdb : The process cannot access the file because it is being used by another process. C:\WINDOWS\system32\dhcp\j50.log : The ...
1
vote
0answers
21 views

failing to configure a dhcp scope under Oracle Virtualbox

I've got a problem configuring a link between WS 2008 and Windows 7 both running as virtual machines (under Oracle VM 4.2.something). Static addresses do well, with both ping 192.168.1.2 (client) and ...
1
vote
0answers
88 views

pfSense + Squid, Windows 2008 DHCP

I recently installed pfSense and Squid3-dev on a spare machine. It is now connected to the network and Internet is working alright. The problem is that I can't get my users to go through Squid proxy ...
2
votes
0answers
274 views

DHCP Server Not Offering to PXE Client

DHCP Server Not Offering to PXE Client BACKGROUND: I'm in the process of adding PXE services to an existing SCCM 2007 server. The SCCM server is separate from the DHCP server (Server 2008 x86) and ...
1
vote
2answers
44 views

IP auto changed on Win2k8 VM

I'm having a problem with my Win2k8 virtual machine. After the virtual machine boot, it gets an IP address from DHCP. But later on, NTP makes a big time shift, so Windows automatically renew (in fact ...
1
vote
1answer
204 views

Windows Server 2008 DHCP: Lease offered, but not accepted

My Windows Server 2008 should be configured to work as a DHCP Server in the Network. Therefore I setup the Role and configured everything. I have downloaded a tiny tool, that can show DHCP-Offers on ...
0
votes
2answers
99 views

client's not receveing internet with dhcp. does if i use static

i reloaded my ad, dhcp, dns server 3 day's ago. server 2008 enterprise. and we are having a problem. only the server issue's the ip. all files share's, ad, etc works. can ping and remote desktop ...
3
votes
1answer
221 views

Windows 2008 R2 DHCP - client renewing too frequently

We are running a Windows 2008 R2 DHCP server. We just added a new DHCP server and removed the old one about three weeks ago. I have an employee who is reporting IP conflict errors every day now for ...
1
vote
0answers
150 views

Static IP installation of AD domain server and DHCP [closed]

I have recently obtained 5 static IP addresses from my ISP. I now want to install a Windows 2008 server 2008 with domain controller and DHCP roles and use these static IP addresses. I have a ...
1
vote
2answers
194 views

DHCP split-scope using Windows 2008 and Windows 2012 servers

Can I configure DHCP split scope using our current Windows 2008 server with DHCP, and a new Windows 2012 server which I have installed DHCP on?
1
vote
3answers
236 views

Windows 2008 Domain - DHCP on Server vs Firewall

I currently administer a Windows 2008 domain network with DHCP running on the DC. Clients obtain addresses dynamically and servers are assigned static addresses. In the case that the DC fails ...
0
votes
2answers
363 views

how to disable RRAS on windows 2008 r2 pre-reserving blocks of IPs

I have a problem where one of the DHCP scopes has exhausted its scope of IPs. Investigating, I found that a couple of the window 2008 r2 servers were reserving blocks of IPs for RAS running on the ...
1
vote
1answer
70 views

Client doesn't get new IP when switching between subnets/locations

So here is our setup. We have 14 locations each with its own subnet and router. The routers at these locations have DHCP relay enabled that points back to our central server that is running DHCP. ...
1
vote
1answer
132 views

DHCP Server Issuing NAK when servicing multiple subnets

We currently have 3 VLANs setup in our network. On our DHCP server (Windows 2008) we have 3 scopes created for the 3 separate subnets. Our clients can't seem to pull addresses on the subnets, except ...
0
votes
1answer
42 views

Peer domain not authenticating users

I have a forest with two DCs, one of which was added as a peer to the original DC. One DC is running Windows Server 2008 and the other is running Windows Server 2008 R2. I can see on both servers ...
0
votes
1answer
33 views

Windows Server 2003 to provide DHCP to devices

I will use Windows Server 2003 to provide DHCP to devices like printers and other embedded device. Is it true that I need to buy a license ? Some one say to me that I need to buy call licenses for ...
0
votes
1answer
27 views

how to assign a group of computers to a specific scope

I have a Windows 2008 server with the DHCP role installed. All the computers (except the servers) get their IP addresses automatically from one scope. I would like to assign several of computers to a ...
3
votes
1answer
1k views

Configuring VPN on Windows Server 2008 with no DHCP

Please see the revised section at the bottom as the original question seems to have been a little convoluted I have a cloud based virtual machine from my client's hosting company. The sole ...
1
vote
1answer
374 views

two domains, one LAN, two DNS server, 3 problems

Background: we have 150 users using AD on domain ABC. Windows 2003. that serverDC1 has a DNS, DHCP roles, and there is serverDC2 which is its live DNS backup. logs seem healthy. then we chose to ...
1
vote
2answers
326 views

Windows 2008 R2 DHCP Overlapping Scopes

We are trying to troubleshoot a scope overlap problem. We have multiple device types we wish to give all different ranges of a 16 bit subnet. IE. X device we wish to give 192.168.2.1-192.168.2.254/16, ...
3
votes
3answers
858 views

Multiple IPv6 addresses being assigned to single interface

I'm configuring a DHCP scope for IPv6, however all my clients are getting 2 or more IPv6 addresses assigned to the interface. I'm using fda8:6c3:ce53:a890:/64 as the prefix. The scope is on a machine ...
2
votes
2answers
1k views

Should the DNS and DHCP server be on the same location?

We are experiencing an issue with users not being mapped to their corresponding network drives during the login. I verified that the logon script is correct and it work if I run it manually so I ...
2
votes
1answer
217 views

How to correct time on Windows PDC server without affecting logons

I know how to set an authoritative time server in Server 2008 R2. That's not what this question is. I want to know how I can change the time on a network where the PDC (and therefore everything) is a ...
1
vote
1answer
474 views

Changing 252 WPAD option on Windows DHCP server

I am replacing our old ISA server with a new server based on Forefront TMG. On the DHCP server (Windows 2003) I can see that the DHCP Option 252 is pointing to the old address. I have changed the ...
1
vote
1answer
2k views

How to configure multiple scopes for DHCP

We have DHCP setup at the office on one of our Windows Server 2008 boxes. Everyone that has a wired connection goes through our router at 10.10.10.1 and is assigned an address from our DHCP server at ...
0
votes
1answer
497 views

One Windows Domain workstation can ping gateway but gets no internet access

One of the (Windows XP SP3) workstations of our Windows Domain could not access internet anymore, this problem suddenly happened overnight. The domain controllers (there are three of them) are all ...
2
votes
2answers
769 views

DHCP - Will it dish out IP's and DNS details to non-domain joined computers?

The question is essentially in the title - I'm very new to servers and AD (studying for my first exam as of now and messing with VM's). My query is really, with DHCP installed in your domain, will it ...
0
votes
0answers
304 views

Linux Clients DNS records disappearing for Windows DNS Server

I have a bunch of linux servers. I have a Windows Server 2008 DC/DHCP/DNS server. The DHCP server is set to do authenticated updates to DNS, and it works well enough. When you renew DHCP on the ...
1
vote
1answer
3k views

WDS DHCP same server on Windows Server 2008

I have been struggling with a problem on my Windows Server 2008 for the past 4 - 5 hours and cannot figure out whats wrong. I have tried pretty much everything that I found on google and all the links ...
0
votes
0answers
181 views

Overriding DHCP scope option a single IP address reservation

Is it possible to override (or disable) scope option which adds entries to routing table of DHCP clients (option 121) for a single address reservation on Windows Server 2008 DHCP?
0
votes
1answer
1k views

Multiple dns suffix/search base on Windows DHCP

I am trying to find out how can I give out more than one DNS suffix on a DC with the Windows DHCP server. Is it possible somehow? (Win 2K8 with XP, Win7 and Linux clients)
0
votes
1answer
767 views

How to fix error with “class” when creating a dhcp split-scope on Windows 2008?

I'm trying to split a dhcp scope between a existing domain controller TTP01 and the new DC TTP02 to provide failover. I'm using the the wizard in DHCP > [my scope] > Advanced > Split-scope. In the ...
1
vote
2answers
294 views

Windows 2008 R2 - Restrict installation of “DHCP Server Role”

I've got a bunch of machines running in a sensitive network environment. I'm worried that one of the users might install the DHCP Server Role on one of the machines in the network and hose the ...
0
votes
1answer
215 views

server 2008 R2 and asa5505. DHCP through DMZ

I'm trying to configure our network to separate it through DMZ. Basically allowing full access from each network to the servers but blocking access from these networks communicating with each ...
1
vote
2answers
516 views

Stop DHCP client from receiving new IPs from DHCP server

DHCP server is running on my DC (windows 2008 r2). It seems when I need to reboot my laptop or a VM, a new IP is set. The issue is with my DNS entries, I see a bunch of entries for the same host with ...
4
votes
5answers
813 views

Host DHCP services on server or firewall/router?

I've been debating with myself about the best place for hosting a LAN's DHCP services. I have the option of either on a sonicwall firewall or a Windows 2008 server. The two things I was looking for ...
2
votes
1answer
181 views

Configuring a new DHCP scope in Server 2008 R2

As I was running through the scope wizard in DHCP for Windows Server 2008 R2, the wording on the wizard was slightly confusing: it seems to imply that changes I make to the default gateway and DNS ...
1
vote
1answer
1k views

Machine name resolves to wrong IP

I have a machine called server1 (windows server 2008). It was initially set to have an automatically assigned IP by the DHCP server (windows server 2008). It assigned it 192.168.0.180. I changed ...
0
votes
3answers
4k views

Building a PXE/WDS infrastructure with both Windows Server 2008 and Linux PXE Server

What I want to do is the following: I have a Windows Server 2008 R2 (DC) with a running Active Directory. I added the role Windows Deployment Services and installed both Windows® Automated ...
3
votes
2answers
810 views

How to save DHCP option 43 on Windows 2008 server?

I need to retrieve the DHCP option 43 from my DHCP server (Linux ISC DHCP server) on a Windows 2008 server (or any other Windows version, as long as the code 43 is specified in the Parameter request ...
0
votes
2answers
220 views

DNS and DHCP addresses aren't matching up

Server 2008 R2 DNS and DHCP server (same server). For some reason over the last few months I've noticed that many of my DNS entries are incorrect. I'll try to remote into a computer via hostname, ...
1
vote
1answer
110 views

DHCP Admin Member account not displaying scope

I made a domain name test.com on serv1 computer with dc and dns roles. On serv2 pc i added it to the domain and added the role of dhcp with 1 scope and authorized it and it is working fine. I ...
0
votes
3answers
97 views

DHCP DNS Setup for small network

I have a small network of 20 computers and 3 servers. I current have a Sonicwall firewall that does the DHCP for me. The question I have is the following. On the DHCP settings should I have the local ...
0
votes
1answer
2k views

Hyper-V virtual machine unable to get IP address from DHCP server running on same physical box

We have a Windows server 2008 R2 with two network cards running AD, DHCP, DNS and Hyper-V The first nic is setup with a static IP address and DHCP, WDS, and DNS are bound to it. The second nic is ...
0
votes
2answers
133 views

How to forward DHCP A record registration to another domain

I'm currently at work and we're having some troubles. We want to create a new domain for our area, but the DHCP server is not in our control. The DHCP server lists DNS as testdomain.com, however we ...