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" computers ping with the same IP

Posted on 2006-11-29
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Last Modified: 2011-09-20
I have 2 XP pro computers that have 2 different static IP addresses and different computer names.

When I ping the computers using the computer name both computers come back with the same IP

for example

computer 1 computer name is marketing and has IP of 10.0.1.101
computer 2 computer name is admin1 and has IP of 10.0.1.129

when I ping from my win2k3 server both computers using the computer name both come back with a IP of 10.0.1.101

whys that then???


thanks in advance :):)
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Question by:tppltd
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Expert Comment

by:Chris Dent
ID: 18035846

Hi,

Is this an AD Domain? You mention a server, but not whether other not it is.

If so, I would imagine you use win2k3 as the DNS Server? And that's AD Integrated?

And if you are, then you should configure Aging and Scavenging as follows:

Open DNS Manager, expand Forward Lookup Zones, right click on the Forward Lookup Zone for your Domain and open Properties.
Under the General tab should be an "Aging" button, click that, then in the new screen tick the box labelled "Scavenge Stale Resource Records".
The two boxes below that should, when you add them together, match your DHCP Lease Time (in an ideal world). So, if your DHCP Lease is 12 days, then set the No-Refresh Interval to 8 Days and the Refresh Interval to 4 Days.
Click OK.

That will replicate to all other DNS Servers in your domain. The next change only needs to be made on one DNS Server (if you have more than one) as it only needs to run in one place to keep things neat.

Right click on the DNS Server and select Properties.
Under the Advanced Tab tick the box labelled "Enable Automatic Scavenging of Stale Records" and set the Scavenging Period to 1 Day.

And that's all, by the end of tomorrow all incorrect records should be gone and it'll just look after itself in future.

HTH

Chris
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Author Comment

by:tppltd
ID: 18035949
Thanks chris yes its a AD domain, DNS is on win2k box, exchange on a win2k3 box

I have done the fix and will check tomorrow :):)


thanks a lot m8, fingers crossed never seen it happen before.
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Chris Dent earned 125 total points
ID: 18035991

No problem :)

If you're in more of a rush to find out you can kick Scavenging off manually by right clicking on the DNS Server and selecting "Scavenge Stale Records". Not sure if that's there on Windows 2000 DNS though.

Chris
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Author Comment

by:tppltd
ID: 18044289
worked a treat win2k does have that facility....please accept my points :)

owe you a beer
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by:Chris Dent
ID: 18044297

Always a pleasure :)

Chris
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