Re: DNS-DHCP Question

Read inline please.

In news:1175367137.941375.230820@xxxxxxxxxxxxxxxxxxxxxxxxxxxx,
tman <naves.tom@xxxxxxxxx> typed:
We are starting the process of upgrading our network from NT4 to
Windows 2003 Active Directory. To make our network more managable, we
are first coverting from static ip addresses to DHCP assigned
addresses. We just did the first of two subnets. Until we upgrade to
Windows 2003 and Active Directory, we will continue to use our
manual, BIND DSN servers. Here is my question:

When we changed the one subnet to DHCP, we left the box on the clients
that tell it to update DNS checked even though we cannot update the
BIND DNS server. We thought it would be a good idea to do this in
anticipation of the move to Windows DNS. Is it a problem to tell the
clients to update DNS when that cannot be done and will not be able to
be done for another couple of months?

You can leave this box unchecked if you want to, in fact it would be better
to leave it unchecked if you are moving the DHCP to the Windows Server 2003.
The DHCP server in Windows Server 2003 can and should be configured to
update DNS clients that do not ask to update DNS.
On the Properties *** of the Windows Server 2003 DHCP server, select the
DNS tab and select these boxes:
Enable DNS dynamic updates according to the boxes below
Always dynamically update DNS A and PTR records
Discard A and PTR records when the lease is deleted
Dynamically update DNS A and PTR records for DHCP clients that do not
request updates

On the Advanced tab click the Credentials button and enter the credentials
of a dedicated user account. This account needs no special privileges, but
should have a non expiring complex password (Phrases that have upper and
lower case letters, numbers and spaces make the best passwords) This allows
the DHCP server to add and remove records from secure zone.

Add these Windows 200 options:
001 Microsoft Disable NetBIOS Option 0x0
002 Microsoft DHCP lease on shutdown

If you have many mobile clients (laptops) I would reduce the lease to 1 day
to allow the DHCP server to remove their records daily.
The settings above allows the DHCP server(s) to have ownership of the
Dynamic DNS records so it can add and remove the records on its own. If you
check the box on the DNS client, it will likely take ownership of the
records and especially laptops which users rarely, if ever run ipconfig
/release deregister their PTR records. DHCP servers can only remove records
they own.


--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
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