At what does Win2k register itself into DNS

Gareth Bromley gbromley at intstar.com
Thu Jun 22 15:09:08 UTC 2000


Gareth Bromley wrote:

> If you have a number of Win2K machines, with statically allocated IP
> addresses, will Win2K still attempt to register A and PTR records for
> themselves?

Answering my own question. It would appear that, record registration
occurs in one of four ways:
1. If the system is configured with a static IP address, the DHCP client
service will contact the primary DNS server directly to register both the
address (A) and pointer (PTR) records.
2. If the system is configured to receive an IP address from a DHCP
server, the DHCP client service will negotiate responsibility for updating
DNS records with the DHCP server. By default, Windows 2000 systems will
attempt to register their own address records while relying on a DHCP
server to perform the registration of the pointer (PTR) resource record
for reverse lookup functionality.
3. If the DHCP server does not support dynamic updates of the PTR record,
the Windows 2000 system will update the PTR record itself.
4. In some cases, the DHCP server may be configured to ignore the client
and generate both the A record update and the PTR record update itself.

Obviously point 1 is a waste of time, as any good hostmaster would have
done this already.

I guess this brings me onto question 2: What is the integration between
ISC DHCPD and Bind like? Does it handle cases 2-4 above? Does it take to
the client correctly to negioate who does what (DHCP Option 81 I think)?

--
--Gareth Bromley
Managing Director, Int* Consulting Ltd



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