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Configure DHCP for WDS

Posted on 2011-04-27
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Last Modified: 2012-05-11
I have WDS role setup and added image from Windows 7 SP1.
But when I boot up a laptop off PXE it never sees the WDS server so I can't do any install or capture image process.

My DHCP server is on another server and I'm not sure what I have to do to get it configured.

Do I just set option 66 and type in the fully qualified server name of the WDS server?
Not sure if I'd need option 67 set. A MS article says option 67 should be set to boot\x86\wdsnbp.com, but do I put in \\WDSservername\c$\boot\x86\wdsnbp.com? Or what's the " boot\x86\wdsnbp.com" supposed to be, I'm not familiar with this path format.
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Question by:garryshape
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by:jonahzona
ID: 35478605
Researching now.

Our WDS is on the DHCP server - runs flawlessly.

I will let you know if I find anything.
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jonahzona earned 2000 total points
ID: 35478829
This is the best info I could find. I wish I could be of more help. I can say that WDS is a lifesaver though!

http://social.technet.microsoft.com/forums/en-US/itprovistadeployment/thread/ec8723d5-653b-4914-8649-dc3fef3b75b4/

Look at Sudha's answer about 3/4 of the way down the page.
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by:garryshape
ID: 35479018
Yeah there might something I'm missing then.
I ran the command from that thread (wdsutil /set-server /usedhcpports:yes) and tried booting up a laptop again but it said something about didn't respond 4011 or something and then Selected boot device failed.

Maybe it has something to do with the laptop being on 10.3.11 subnet while the DHCP and WDS servers are on 10.3.100
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by:jonahzona
jonahzona earned 2000 total points
ID: 35479064
If DHCP is installed on a server that is located in a different subnet, then you will need to do one of the following:

    (recommended) Configure your IP Helper tables. All DHCP broadcasts on UDP port 67 by client computers should be forwarded directly to both the DHCP server and the Windows Deployment Services PXE server. Also, all traffic to UDP port 4011 from the client computers to the Windows Deployment Services PXE server should be routed appropriately (these requests direct traffic to the server, not broadcasts).

    Add DHCP options 66 and 67. Option 66 should be set to the Windows Deployment Services server, and option 67 should be set to boot\x86\wdsnbp.com.
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by:garryshape
ID: 35479180
I went into DHCP server and set the scope options (066 to the computer.domain.com, and 067 to boot\x86\wdsnbp.com)
Rebooted laptop off Nic but still nothing.

Is the UDP port 4011 a DHCP thing or for firewall port forwarding?
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by:garryshape
ID: 35479206
Ok I noticed option 60 was checked for HP thin clients we used, but are not using the Device manager at this time for pxe booting.
I unchecked it and rebooted the laptop, now it's connected I think. Says Pending Request ID: 1 message from Administrator
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by:jonahzona
ID: 35479221
I am pretty sure that it wants UDP traffic on port 4011 routed to the WDS server because the lease address will be on a different subnet than the WDS server.
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Author Comment

by:garryshape
ID: 35479270
Had to figure out the Delegate thing in Active Directory so I can approve it.
Going to see if it works now
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by:jonahzona
jonahzona earned 2000 total points
ID: 35479301
This might help too. A different thread about using DHCP and WDS on different subnets.

http://www.techtalkz.com/windows-deployment/197540-wds-dhcp-pxe-issue.html
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Author Comment

by:garryshape
ID: 35479365
Yeah it seems to all be working fine now. Didn't have to do anything with the port 4011
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by:jonahzona
ID: 35479375
K. Awesome! Glad to be of help, if I was at all!
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