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5.6

DHCP IPs not updating in DNS

Asked by stonneway in Windows 2003 Server, Dynamic Host Configuration Protocol (DHCP), Domain Name Service (DNS)

Tags: Microsoft, Windows Server, 2003

Hi,

I have a problem. I think. I may be going mad.

I've got a windows 2003 64 bit server. Its the sole server on the network. It's acting as the DHCP server for the network as well as internal DNS.

The problem is that when the DHCP hands out a new IP to a client machine it doesnt always record it in the DNS. It seems to some times, but similarly sometimes it doesnt seem to update any existing A records. It does seem fine if we add a new machine however, so creating a new A record seems to be unaffected. As we have a large number of laptop users, and a large number of freelancers, we have a lot of moving around, coming and going.

As a result, if we pluck a machine name out of the air at the moment, and ping that machine, the IP that the machine name resolves to is inevitably the wrong one. The same if we do a reverse DNS lookup against the IP, typically it gets resolved to the wrong machine name.

Now the DHCP scope on the server *IS* set to create A records when a new IP is dished out, as well as to delete existing A records when a lease expires.

We haven't got this issue at other sites, in fact this is the first time I have seen anything quite so significant.

Anyone seen this before or know what may be the issue ?

The attachment shows two highlighted entries from the DNS. Laptop-0007 actually has the .24 address that the DNS is showing still belongs to laptop-0012.

Olly

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20091111-EE-VQP-92 / EE_QW_2_20070628

DHCP IPs not updating in DNS

Asked by stonneway in Windows 2003 Server, Dynamic Host Configuration Protocol (DHCP), Domain Name Service (DNS)

Tags: Microsoft, Windows Server, 2003

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