Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Point Windows 7 to Specific DHCP Server?

Posted on 2015-01-13
6
Medium Priority
?
394 Views
Last Modified: 2015-01-13
I have DHCP setup on two different pieces of equipment in my current environment, not my choosing. Both scopes are on VLAN 1 with different ranges.

1) DHCP on a Windows 2008 R2 Server -  For Virtual PCs (VMware View)
2) DHCP on a Cisco IOS Switch - Preboot for IP phones with options, which point them to reboot on the Voice VLAN

The IP Phones are having problems registering to the Windows 2008 R2 Server, hence the reason for using the Cisco Switch (according to the phone vendor).

The PCs keep pulling DHCP from the Cisco Switch, because it is responding first.

I know i can't do MAC filtering for DHCP on the Cisco Switch.

So, what are my other options?

Can I point my Windows 7 PCs to a specific DHCP server? If so, how?  

Thank you Experts!
0
Comment
Question by:First Last
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 1

Expert Comment

by:john15nlt
ID: 40546613
Its there a specific reason you have to use the the dhcp server off the Windows 2008 server. I have seen the issue you are speaking of in regards to the ip phones, but it seems the simple solution is to turn off the dhcp on the windows server.
0
 
LVL 59

Expert Comment

by:Cliff Galiher
ID: 40546623
DHCP is a broadcast protocol and that is inherent in its design. You cannot "point" a client at a specific server... that'd defeat the purpose of DHCP. The only way to limit DHCP responses is to limit the broadcast domain (VLANs, routers, etc) or limit the server's responses via class/vendor/mac filtering or similar. It can't be done on the client end.
0
 
LVL 53

Expert Comment

by:Will Szymkowski
ID: 40546648
As stated already there is no setting to accomplish this but what you can do is the following.
Example
Have your DHCP servers on VLAN1 have your workstations on VLAN2 and only assign a DHCP helper address on VLAN2 for the DHCP server you want your clients connecting to. If you do not add a helper address for the second DHCP server your clients will never use it.

This is just an example of how you can get around what your trying to accomplish. This is by no means a best practice because if that DHCP server goes down then all of your clients will no longer get leases and when their lease expires they will not be able to communicate on the network.

Will.
0
What Is Blockchain Technology?

Blockchain is a technology that underpins the success of Bitcoin and other digital currencies, but it has uses far beyond finance. Learn how blockchain works and why it is proving disruptive to other areas of IT.

 
LVL 1

Author Comment

by:First Last
ID: 40546753
Will -

Any idea on how i should configure the new VLAN 5 to point to VLAN 1 which is where the DHCP server is located?

I created the VLAN:
vlan 5
 name ViewDesktops


interface Vlan5
 no ip address
 ip helper-address 10.35.208.70
end



I enabled the vlan 5

I assigned my switch port to the VLAN
interface GigabitEthernet10/9
 switchport access vlan 5
0
 
LVL 53

Accepted Solution

by:
Will Szymkowski earned 2000 total points
ID: 40546966
Take a look at the link below to assist with setting up the IP Helper.

IP Helper

Will.
0
 
LVL 1

Author Comment

by:First Last
ID: 40547238
Will - Great answer!  Your solution would work, but not in my situation. It won't work for me because both VLANS need to have the same IP Range. So, i'm going to physically move everything from two different DHCP servers to one DHCP server and keep everything on one VLAN.
0

Featured Post

Nothing ever in the clear!

This technical paper will help you implement VMware’s VM encryption as well as implement Veeam encryption which together will achieve the nothing ever in the clear goal. If a bad guy steals VMs, backups or traffic they get nothing.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A procedure for exporting installed hotfix details of remote computers using powershell
When you try to extract and to view the contents of a Microsoft Update Standalone Package (MSU) for Windows Vista, you cannot extract the files from the MSU. Here we are going to explain how to extract those hotfix details without using any third pa…
This Micro Tutorial will give you a introduction in two parts how to utilize Windows Live Movie Maker to its maximum editing capability. This will be demonstrated using Windows Live Movie Maker on Windows 7 operating system.
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question