| Author | Messages | |
AlRose
Posts:44
 | | 08/24/2010 2:35 PM |
| I deleted all the leases but i am still having some issues with different
IPs in DHCP and DNS, after a bit of googling i found on Technet the
following:
The secure dynamic updates functionality can be compromised if the following
conditions are true:
•You run a DHCP server on a Windows Server 2008–based domain controller
•The DHCP server is configured to perform registration of DNS records on
behalf of its clients.
To avoid this issue, deploy DHCP servers and domain controllers on separate
computers, or configure the DHCP server to use a dedicated user account for
dynamic updates.
I just assigned a domain account for DNS dynamic updates...
On Tue, Aug 24, 2010 at 10:41 AM, Peter Johnson <Peter.Johnson@peterstow.com
> wrote:
> Hi Al
>
>
>
> It strikes me that you have clash between what DNS is saying and what the
> IP addresses actually are. Flush the leases let the machines reregister in
> DNS and you should be good to go.
>
>
>
> Regards
>
> [image: Description:
> C:\Users\PeterTJ\AppData\Roaming\Microsoft\Signatures\peterstow logo2.jpg]
>
> Peter Johnson
> I.T Architect
> United Kingdom: +44 1285 658542
> South Africa: +27 11 252 1100
> Swaziland: +268 442 7000
> Fax:+27 11 974 7130
> Mobile: +2783 306 0019
> Peter.Johnson@peterstow.com
> www.peterstow.com
>
>
>
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> *From:* activedir-owner@mail.activedir.org [mailto:
> activedir-owner@mail.activedir.org] *On Behalf Of *Al Rose
> *Sent:* 24 August 2010 10:37
>
> *To:* activedir@mail.activedir.org
> *Subject:* Re: [ActiveDir] Problems with Workstations'IP config after DHCP
> export to new 2008 DC
>
>
>
> Hi Peter,
>
>
>
> just thought about that, the DNS server is on the same server indeed.
>
> Dynamic updates are enabled, i just clicked "Always dynamically update A
> and PTR records"as i see a lot of inconstency between DHCP IP addresses and
> DNS records.
>
> On Tue, Aug 24, 2010 at 10:24 AM, Peter Johnson <
> Peter.Johnson@peterstow.com> wrote:
>
> IS the DNS server the same machine? Is the zone allowing dynamic updates?
>
>
>
> Regards
>
> Peter Johnson
>
> I.T Architect
> United Kingdom: +44 1285 658542
> South Africa: +27 11 252 1100
> Swaziland: +268 442 7000
> Fax:+27 11 974 7130
> Mobile: +2783 306 0019
> Peter.Johnson@peterstow.com
> www.peterstow.com
>
>
>
> *This email message (including attachments) contains information which may
> be confidential and/or legally privileged. Unless you are the intended
> recipient, you may not use, copy or disclose to anyone the message or any
> information contained in the message or from any attachments that were sent
> with this email, and If you have received this email message in error,
> please advise the sender by email, and delete the message. Unauthorised
> disclosure and/or use of information contained in this email may result in
> civil and criminal liability. Everything in this e-mail and attachments
> relating to the official business of Peterstow Aquapower is proprietary to
> the company.
>
> Caution should be observed in placing any reliance upon any information
> contained in this e-mail, which is not intended to be a representation or
> inducement to make any decision in relation to Peterstow Aquapower. Any
> decision taken based on the information provided in this e-mail, should only
> be made after consultation with appropriate legal, regulatory, tax,
> technical, business, investment, financial, and accounting advisors. Neither
> the sender of the e-mail, nor Peterstow Aquapower shall be liable to any
> party for any direct, indirect or consequential damages, including, without
> limitation, loss of profit, interruption of business or loss of information,
> data or software or otherwise.
>
> The e-mail address of the sender may not be used, copied, sold, disclosed
> or incorporated into any database or mailing list for spamming and/or other
> marketing purposes without the prior consent of Peterstow Aquapower. *
>
> *No warranties are created or implied that an employee of Peterstow
> Aquapower and/or a contractor of Peterstow Aquapower is authorized to create
> and send this e-mail.** *
>
> * *
>
> *From:* activedir-owner@mail.activedir.org [mailto:
> activedir-owner@mail.activedir.org] *On Behalf Of *Al Rose
>
> *Sent:* 24 August 2010 10:21
>
>
> *To:* activedir@mail.activedir.org
>
> *Subject:* [ActiveDir] Problems with Workstations'IP config after DHCP
> export to new 2008 DC
>
>
>
> HI all,
>
>
>
> Last week-end i replaced a domain controller in one of our branch office. I
> exported the DHCP database from a Windows 2003 R2 DHCP server and imported
> it into a new DC running Windows 2008 R2 server with DHCP.
>
> All looked OK the import went fine (it imported all leases by the way).
>
>
>
> Now i am getting a lot of calls from people saying that they lost their
> access to Outlook, Shared Folders, sometimes i can ping the machine (NO RDP
> though) and sometimes the IP in the DHCP database is different that the IP
> in the DNS.
>
> Folks who loose their IP appeared to be those who just have renewed their
> lease.
>
> For a test i have logged to a random workstation (not the one having
> issues) i ran an ipconfig/release && ipconfig/renew and it went OK, IP
> config is correct, dns servers are correct, gateway and subnet mask too.
>
>
>
> So would it be a lease issue? Would it help to just delete all leases?
>
>
>
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