Re: DNS not dynamically updating clients
- From: "Herb Martin" <news@xxxxxxxxxxxxxx>
- Date: Fri, 28 Apr 2006 17:31:30 -0500
"TripleT" <TripleT@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:85D83787-D75A-4B61-8D95-E35AB1A32D0D@xxxxxxxxxxxxxxxx
Thanks for all your help. I added the 015 DNS Domain Name to our DHCP
server. I also found out that 2000 SP4 and XP clients do not by default
dynamically update to single level domains unless you add the registry
hack.
I already see 1 NT40 workstation we had left register on our DNS.
I just have 1 more question, If I wanted to make dynamic updates work
before
we upgrade to AD can I just go ahead and rename our Primary DNS server to
name.mydomain.local. - this is the naming convention we are going to use
with AD. It is already joined to our NT40 domain, so could I trick this
2K3
member server by just renameing it?
It really has nothing to do with the NAME OF THE DNS
server. It has to do with the name of the ZONE, and the
DNS domain of the clients (and specified by DHCP.)
Now, technically the DNS server is (going to be) a
domain member and DNS client eventually too, but
the registration is not dependent on that, or its name.
(Real analogy: You could have a Unix box with an
arbitrary name doing this if it had a dynamic zone that
matched the client DNS name -- I am not recommending
this, just pointing out that the DNS server, especially
its own nam, it irrelevant if it can do the task.)
--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]
"Herb Martin" wrote:
"TripleT" <TripleT@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:3E375D46-A330-400B-8B90-5149EC959E73@xxxxxxxxxxxxxxxx
Thanks for your reply.
1. DNS is set for nonsecure and secure updates
2. I am sure what you asking when you want to know how DHCP finds
Dynamic
master. ie. Primary DNS. I listed the scope options below if this
helps:
- 003 Router
- 006 DNS Server - Added Primary and Secondary DNS here
- 044 WINS Svr
- 046 Wins Node - 0x8
- 001 MS Disable Netbios - 0x1
How about the DNS Domain name/suffix? (option 015 )
Otherwise it won't know which zone to register in.
Make sure the clients and the DHCP server are also
in this DNS domain in the SYSTEM CONTROL panel.
(not the NIC suffixes.)
DHCP Server Options enabled:
1. Enable DNS dynamic update
a. Dynamically update DNS A and PTR records if requested
2. Discard A and PTR records
3. Update DNS for clients that do not request
This part is for NT/9x
The DHCP and Primary DNS reside on the same server. Thanks for all
your
help.
Also from your other message there are issues with
SINGLE LABEL DNS domain names and dynamic
registration.
Your zone should have at least two labels but you
might look into the fixes in the Knowledge base:
Single Label domain zone names are a problem Google:
[ "SINGLE LABEL" domain names DNS 2000 | 2003 microsoft: ]
--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]
"Herb Martin" wrote:
"TripleT" <TripleT@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:642F6D6E-4EED-4F0F-BD20-8106A9076AA7@xxxxxxxxxxxxxxxx
Thanks for all you r help in this matter.
Current Configuration:
Primary DNS, DHCP, WINS - 2K3 server - member server on NT40 domain
Secondary DNS, WINS - 2K3 server - member server on NT40 domain
Workstation clients - All Windows XP Pro
Is your primary Zone set to allow updates?
I have all the neccessary configurations set in DHCP to dynamically
update
the DNS servers but it is not working.
When you say "all the necessary..." we cannot really help
you. Unless you list those we have to presume you know
and have everything correct.
The Primary DNS server is working
without any errors. We did however, change the name of the SOA to
NS1
instead of using the name of the server. Could this be the problem?
Probably not, with one exception: If the DHCP server
is set to use the Secondary, and the SOA record lists the Master
under a name which is NOT resolvable to an IP (i.e., no A record
for the Primary which accepts the dynamic updates.)
(Maybe even if it is set to use the Primary.)
How does the DHCP FIND the Dynamic Master (i.e., the Primary)?
We are
not using the DNS registration credentials in the DHCP Advanced
options.
That shouldn't matter since (presumable in an NT domain) you
don't have AD Integrated DNS and thus don't have "secure updates"
enabled.
Those credentials only matter for secure updates. (And although I
don't know this, I would be unsurprised if using them when not
necessary confused the DHCP server.)
The Primary and Secondary DNS servers are pointing repectively to
themselves
in IP Config for thier preferred DNS with no alternate DNS.
That's irrelevant to all except those two specific servers.
Where is the DHCP server pointed and how can it resolve
to FIND the DYNAMIC Primary DNS server?
The errors in in the DHCP log I am getting is as follows:
31,04/28/06,00:20:25,DNS Update Failed,10.100.101.91,IT-10058.,-1,
31,04/28/06,00:20:25,DNS Update Failed,10.100.101.92,it-10131.,-1,
31,04/28/06,00:20:25,DNS Update Failed,10.100.101.93,IT-10127.,-1,
You might not want to truncate those line.
It looks like DHCP is trying to update DNS but fails. Any ideas?
Thanks.
It's probably not finding the DYNAMIC Primary for the zone.
--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]
.
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