[windows2000] Re: Question about multiple entries in DNS
- From: "Sullivan, Glenn" <GSullivan@xxxxxxxxxxxxxx>
- To: <windows2000@xxxxxxxxxxxxx>
- Date: Tue, 29 Jun 2004 11:51:41 -0400
If you have active directory, and your DNS servers are set to accept
dynamic registrations, and your clients are either all Win2K or higher,
or communicate with a DHCP server that is set to register names for
down-level operating systems, then your task is easy:
Assuming that you have a half-hour some time that you can afford to be
offline, delete any records for dynamic addresses (your fixed addresses
are all in a block, right?) and then force all your clients to reboot.
Your clients will re-register with DNS when they boot up.
Then, look through Windows Help for DNS Scavenging to prevent it from
happening again.
BTW, if you don't want to make all your clients reboot, some creative
command line manipulation with for /f, PSExec, and IPConfig /registerDNS
would work to get all the clients to re-register... At least the
up-level clients.
HTH,
Glenn Sullivan, MCSE+I MCDBA
David Clark Company Inc.
-----Original Message-----
From: windows2000-bounce@xxxxxxxxxxxxx
[mailto:windows2000-bounce@xxxxxxxxxxxxx] On Behalf Of Jennifer Hooper
Posted At: Tuesday, June 29, 2004 11:37 AM
Posted To: Windows 2000
Conversation: [windows2000] Re: Question about multiple entries in DNS
Subject: [windows2000] Re: Question about multiple entries in DNS
Oh yeah, I recognize them. A lot of this is from swapping out hardware,
building new hardware, etcetcetc. The old ones aren't being purged. So
it's going to be a major manual deal... Maybe I can do some creative
scripting to do some of the work for me. There are probably 400
addresses, some with 1 entry, some with 10. Just depends on the subnet
and what's been going on on that floor.
Thanks Jeff!
Jennifer
-----Original Message-----
From: Jeff Malczewski [mailto:jmalczewski@xxxxxxxx]
Sent: Tuesday, June 29, 2004 8:32 AM
To: 'windows2000@xxxxxxxxxxxxx'
Subject: [windows2000] Re: Question about multiple entries in DNS
What are all the machine names, do you recognize them?? Are they A
records or CNAME records? If the entries are all for Windows machines,
and there's not hundreds of IP addresses to deal with, I would do an
NBTSTAT -A <ip_address> on each address. On a windows machine, this
will tell you the machine name, the logged in user, and the domain or
workgroup it is a member of.
Then you can just prune all the dead stuff out.
-----Original Message-----
From: Jennifer Hooper [mailto:jennifer.hooper@xxxxxxxxxxxxx]
Sent: Tuesday, June 29, 2004 11:13 AM
To: 'windows2000@xxxxxxxxxxxxx'
Subject: [windows2000] Question about multiple entries in DNS
Hi Guys -
I have a user who has put in a request to "clean up DNS" As it
turns out, there are multiple entries on our DNS servers for each IP
address going to a different host name. I've asked for help repeatedly
from the guy who set all this up, and he doesn't give me any answers.
So I'm wondering if you guys have seen this, and if you might know of an
MS Patch or someway to prevent/fix it. DNS does work fine, but I can't
really tell you too much about how it's configured. We have one Sun
box, and 2 Windows 2000 Domain controllers that are handling DNS.
Thanks,
Jen
Jennifer Hooper
Peregrine Systems, Inc.
Sr. Network Engineer
mailto:jennifer.hooper@xxxxxxxxxxxxx
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