Using DHCP options 66 & 67 is not
recommended. Per Microsoft:
...
If DHCP is installed on a server that is located in a different
subnet, you will need to do one of the following:
(Recommended) Configure your router to forward broadcast packets.
All DHCP broadcasts by client computers on UDP port 67 should be
forwarded directly to both the DHCP server and the Windows
Deployment Services server. Also, all traffic on UDP port 4011
from the client computers to the Windows Deployment Services
server should be routed appropriately (these requests direct
traffic, not broadcasts, to the server).
...
See
http://technet.microsoft.com/en-us/library/cc771670%28v=ws.10%29.aspx
On 9/25/2013 4:37 PM, Christopher Bodnar wrote:
What is your DHCP
Option 67 set to?
Christopher
Bodnar
Enterprise Architect I, Corporate Office of
Technology:Enterprise Architecture
and Engineering Services
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[email protected]
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The Guardian Life Insurance Company of America
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From:
Kurt Buff
<[email protected]>
To:
[email protected]
Date:
09/25/2013 03:17 PM
Subject:
Re: [NTSysADM]
Issue with WDS
Sent by:
[email protected]
We have DHCP helpers on our layer3 swtich. The
client
gets the DHCP
settings in its subnet, and then tries to communicate with the
WDS
server. If that WDS server is in a different subnet than the
client,
the tftp request fails. It probably doesn't help that the
client, DHCP
server and WDS server are all on different subnets.
In fact, placing the client and the WDS server on the same
subnet
fixed the problem.
Kurt
On Wed, Sep 25, 2013 at 5:11 AM, Mayo, Bill
<[email protected]>
wrote:
> I know that in the Cisco switch environment, you have to
use the "dhcp
helper" command for the WDS server when crossing subnets.
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
On Behalf Of Kurt Buff
> Sent: Tuesday, September 24, 2013 8:32 PM
> To: [email protected]
> Subject: Re: [NTSysADM] Issue with WDS
>
> Haven't done it before. Been more server/network focused,
but JA got
the bug, and I encouraged him to try, so some of the
troubleshooting fell
to me.
>
> Pretty cool technology, but he's got some work to do in
putting the
driver packs together. Better him than me...
>
> Kurt
>
> On Tue, Sep 24, 2013 at 5:22 PM, Art DeKneef
<[email protected]>
wrote:
>> It can be done if I remember correctly when I did
this for a school
district over 5 years ago.
>>
>> But all of my latest installs have been for SMBs and
have been
on the same subnet.
>>
>> Just started setting up an installation of WDS on
Server 2012
R2 today.
>>
>> Art
>>
>> -----Original Message-----
>> From: [email protected]
>> [mailto:[email protected]]
On Behalf Of Kurt Buff
>> Sent: Tuesday, September 24, 2013 4:07 PM
>> To: [email protected]
>> Subject: Re: [NTSysADM] Issue with WDS
>>
>> It's an initial install of WDS.
>>
>> Turns out the problem goes away if WDS server and
client are in
the same subnet.
>>
>> I did some googling regarding tftp across different
subnets, and
did see some entries regarding reg entries, but none regarding
hotfixes.
>> I'll pursue that if we want to keep clients and
server on different
subnets.
>>
>> Kurt
>>
>> On Tue, Sep 24, 2013 at 3:44 PM, Art DeKneef
<[email protected]>
wrote:
>>> Has it worked before and doesn't with this
machine or is this
the first time?
>>>
>>> Is the DHCP server initialized and authorized?
>>>
>>> Have all the WDS hotfixes been applied? There are
some that
pertain to TFTP if memory serves me.
>>>
>>> Just a couple of thoughts off the top of my head.
>>>
>>> Art
>>>
>>> -----Original Message-----
>>> From: [email protected]
>>> [mailto:[email protected]]
On Behalf Of Kurt Buff
>>> Sent: Tuesday, September 24, 2013 1:47 PM
>>> To: [email protected]
>>> Subject: [NTSysADM] Issue with WDS
>>>
>>> All,
>>>
>>> Junior admin is having problems making this go.
>>>
>>> Config looks good to me after cursory inspection,
but I've
found an error message being emitted by the WDS server to the
laptop, which
looks like this:
>>>
>>> IP 192.168.9.10.69 > 192.168.24.69.2070: 22
ERROR
EBADOP "Access violation."
>>>
>>> This looks like a TFTP error from what I've found
via Google.
>>> http://www.mwat.de/docs/tftp/w4/tftp/Tftp.html#EBADOP
>>>
>>> The laptop is a Dell E6420.
>>>
>>> The WDS server is a 2008R2 VM at 192.168.9.10, as
shown above,
and the DHCP server is one of our DCs, also 2008R2, on the
192.168.10.0/24
subnet.
>>>
>>> Anyone seen anything like this and can give me a
clue?
>>>
>>> Kurt
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
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