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Second DHCP server seems to be ignoring requests

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  #16  
Old 31-10-2009
sawyer
 
Posts: n/a
Re: Second DHCP server seems to be ignoring requests

Do you have network teaming configured on the DHCP server? I had a similar
problem and it ended being the teaming of the nic's on the DHCP server that
was preventing the DHCP server from handing out ip's to the client machines

"Ace Fekay [MCT]" <aceman@mvps.RemoveThisPart.org> wrote in message
news:mn.eafe7d9a05ba5583.105663@mvps.RemoveThisPart.org...
>> On Oct 29, 7:27 am, "Paul Bergson [MVP-DS]" <pbbergs@no_spammsn.com>
>> wrote:
>>> I would suspect it is either the fact the DHCP server hasn't been
>>> authorized
>>> yet in AD -or- the clients aren't on the same subnet as the DHCP server
>>> and
>>> a dhcp helper (Relay on a router) on the remote subnets hasn't been
>>> configured.
>>>

>>
>> It has been authorized in AD. The clients I'm testing with are on a
>> different subnet in a VM. But, the primary DHCP server is on the same
>> subnet as the secondary DHCP server (10.10.11.x). I am not sure about
>> a Relay though.

>
> If the clients are on a different subnet, then I assume that the DHCP
> scope is set to an IP range for the subnet the clients are sitting on, and
> the DHCP server is either directly connected to that subnet (meaning the
> interface of the DHCP server has an IP on that subnet), or there is a DHCP
> Relay agent to receive/transmit DHCP requests from that subnet to the DHCP
> server on a different subnet.
>
> DHCP will only work if one of the interfaces are configured with a
> configuration with an IP address in the same subnet as the scope but not
> within the scope. Otherwise, if the clients are on a subnet the DHCP
> server is not connected to, then you must use some sort of DHCP relay
> agent or IP helper.
>
> Ace
>
> --
> Ace
>
> This posting is provided "AS-IS" with no warranties or guarantees and
> confers no rights.
>
> Please reply back to the newsgroup or forum for collaboration benefit
> among responding engineers, and to help others benefit from your
> resolution.
>
> Ace Fekay, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE & MCSA
> 2003/2000, MCSA Messaging 2003
> Microsoft Certified Trainer
>
> For urgent issues, please contact Microsoft PSS directly. Please check
> http://support.microsoft.com for regional support phone numbers.
>
>

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