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Hello,
I am not sure if I am not doing good housekeeping or if I am doing
something wrong. Somehow, as computers come and go in the domain,
their DNS records stay (WINS is correct). All machines are configured
to register their connection into DNS and as result I have stuff that
looks like this:
DNS:
CAR-08 Host(A) 10.0.21.85 (wrong)
CAR-10 Host(A) 10.0.21.85 (wrong - machine not in domain
anymore)
LAB-45 Host(A) 10.0.21.85 (correct)
WINS:
CAR-08 Host(A) 10.0.20.97 (correct)
CAR-10 Host(A) not listed (correct - machine is gone)
LAB-45 Host(A) 10.0.21.85 (correct)
So as you can see, something is not updating DNS correctly but I am
not sure what needs to happen to ensure DNS entries are updated or
purged. Apparently the disjoining of a machine from the domain does
not update the DNS table, so what does? This is a problem that is
cropping up and getting worse, and I don't ever remember having this
problem on my old AD 2000 install and it had close to 3000 entries.
Any thoughts?
Thanks for reading.
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Read inline please.
In news:1176825236.818742.140850[ at ]e65g2000hsc.googlegroups.com,
getkevin[ at ]gmail.com <getkevin[ at ]gmail.com> typed:
[Quoted Text] > Hello,
>
> I am not sure if I am not doing good housekeeping or if I am doing
> something wrong. Somehow, as computers come and go in the domain,
> their DNS records stay (WINS is correct). All machines are configured
> to register their connection into DNS and as result I have stuff that
> looks like this:
>
> DNS:
> CAR-08 Host(A) 10.0.21.85 (wrong)
> CAR-10 Host(A) 10.0.21.85 (wrong - machine not in domain
> anymore)
> LAB-45 Host(A) 10.0.21.85 (correct)
>
> WINS:
> CAR-08 Host(A) 10.0.20.97 (correct)
> CAR-10 Host(A) not listed (correct - machine is gone)
> LAB-45 Host(A) 10.0.21.85 (correct)
>
> So as you can see, something is not updating DNS correctly but I am
> not sure what needs to happen to ensure DNS entries are updated or
> purged. Apparently the disjoining of a machine from the domain does
> not update the DNS table, so what does? This is a problem that is
> cropping up and getting worse, and I don't ever remember having this
> problem on my old AD 2000 install and it had close to 3000 entries.
> Any thoughts?
This issue is common in networks with mobile computers registering their own
records, if you could force users to run ipconfig /release before
disconnecting this would not be such an issue. It's not a problem with WINS
because the WINS server owns the records and will remove them.
You have a couple of choices, and since you already use WINS, one would not
be a problem.
1. Make DHCP responsible for all DNS registrations, then set DHCP with a
user account to use in DNS registrations.
2. Alternately, and since WINS is already in use and working, do not allow
clients to register in DNS, then select the WINS tab on the zone that is
listed in the DNS search list, and set the IP of your WINS server. When a
query is made to the zone for a non-existent host, DNS queries WINS for the
host.
--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
Send IM: http://www.icq.com/people/webmsg.php?to=296095728
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Thanks for replying.
We are actually trying to get rid of the WINS server because we simply
don't need it anymore - with the exception of this issue. Also, 95%
of the duplicate names are not mobile devices but actual PC's that
aren't in the environment anymore. I am afraid to use scavenging
becuase I am not familiar enough with it to know if it will delete
manual records I've added. I guess I am a little dissapointed because
I thought one of the benefits of using MS's DHCP server was for the
ability for it to add and remove the dns records as it registers and
expires leases... at least this would be what the options in the DNS
tab on the DHCP server would have you beleive.
On Apr 18, 10:41 am, "Kevin D. Goodknecht Sr. [MVP]"
<a...[ at ]nospam.WFTX.US> wrote:
[Quoted Text] > This issue is common in networks with mobile computers registering their own
> records, if you could force users to run ipconfig /release before
> disconnecting this would not be such an issue. It's not a problem with WINS
> because the WINS server owns the records and will remove them.
> You have a couple of choices, and since you already use WINS, one would not
> be a problem.
> 1. Make DHCP responsible for all DNS registrations, then set DHCP with a
> user account to use in DNS registrations.
> 2. Alternately, and since WINS is already in use and working, do not allow
> clients to register in DNS, then select the WINS tab on the zone that is
> listed in the DNS search list, and set the IP of your WINS server. When a
> query is made to the zone for a non-existent host, DNS queries WINS for the
> host.
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Read inline please.
In news:1177084987.221104.83970[ at ]o5g2000hsb.googlegroups.com,
getkevin[ at ]gmail.com <getkevin[ at ]gmail.com> typed:
[Quoted Text] > Thanks for replying.
>
> We are actually trying to get rid of the WINS server because we simply
> don't need it anymore - with the exception of this issue.
So you are saying you have a single subnet environment, or that if you have
a multiple subnet environment you won't need to browse network places for
computers or servers?
If your network environment has or plans to have multiple sites/subnets AND
you use Network Places to browse other sites, you WILL need WINS.
> Also, 95%
> of the duplicate names are not mobile devices but actual PC's that
> aren't in the environment anymore. I am afraid to use scavenging
> becuase I am not familiar enough with it to know if it will delete
> manual records I've added.
Scavenging DNS will only delete records that are time stamped, (Delete this
record when it becomes stale), manual added records that did not have this
box checked are not time stamped and will not be scavenged.
> I guess I am a little dissapointed because
> I thought one of the benefits of using MS's DHCP server was for the
> ability for it to add and remove the dns records as it registers and
> expires leases... at least this would be what the options in the DNS
> tab on the DHCP server would have you beleive.
DHCP can update and remove records it creates and owns, it cannot remove
records it does not own.
If a client registers the records on its own, DHCP cannot remove these
records.
The best way to handle this is to disable DNS registrations on the client,
then check the boxes for always update DNS, and register records for clients
that do not ask for DNS updates. You will also need to assign a dedicated
user account with a non-expiring password to use in DNS registration (Win2k3
DHCP only)
--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
Send IM: http://www.icq.com/people/webmsg.php?to=296095728
===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================
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http://support.wftx.us/
http://message.wftx.us/
===================================
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It will strip signature out and more
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===================================
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http://www.oehelp.com/OEBackup/Default.aspx
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