DNS and DHCP Settings

[ba9ag]

How do people configure their DNS to updated in DHCP. We have one server that does everything, AD, DNS, DHCP, Print etc. On DHCP there are two options relating to DNS:

1) Dynamically update DNS A and PTR records only if requested by the DHCP (Default)

2) Always dynamically update DNS A and PTR records

We only use XP clients, am I right in thinking we should switch to the second option? Having just setup DNS scavenging I want to try and keep the DNS as accurate. Would appreciate peoples thoughts / experience on this, thanks.

Dimast

[bio]

The DHCP server might be configured in one of the following ways:

•The DHCP server registers and updates client information with the authoritative DNS server of the zone in which the DHCP server is located according to the DHCP client request.
This is the default configuration for DHCP servers running Windows Server 2008. In this mode, the DHCP client can request the way in which the DHCP server performs updates of its host (A) and pointer (PTR) resource records. If possible, the DHCP server accommodates the client request for handling updates to its name and IP address information in DNS.
To modify this setting, select the Dynamically update DNS A and PTR records only if requested by the DHCP clients check box, which is located in Properties on the DNS tab on the applicable DHCP server or on one of its scopes.

•The DHCP server always registers and updates client information in DNS.
This is a modified configuration supported for DHCP servers running Windows Server 2008 and DHCP clients. In this mode, the DHCP server always performs updates of the client’s FQDN, leased IP address information, and both its host (A) and pointer (PTR) resource records, regardless of whether the client has requested to perform its own updates.
To modify this setting, select the Enable DNS dynamic updates according to the settings below check box and click Always dynamically update DNS A and PTR records, which is located in Properties on the DNS tab on the applicable DHCP server or on one of its scopes.

•The DHCP server never registers and updates client information in DNS.
To set this behavior, the DHCP server must be configured to disable performance of DHCP/DNS proxied updates. By disabling this feature, no client host (A) or pointer (PTR) resource records are updated in DNS for DHCP clients.
If necessary, this change in setting can be made at DHCP servers running Windows Server 2008 by clearing the Enable DNS dynamic updates according to the settings below check box, which is located in Properties on the DNS tab on the applicable DHCP server or one of its scopes. By default, updates are always performed for newly installed DHCP servers running Windows Server 2008 and any new scopes created for them.

I would choose the second one (default) if you are running a normal setup (aka one domain, one DHCP server, one DNS server).

bio..

[ba9ag]

Thanks, we only have one server running DNS, DHCP and AD. Would you still recommend the default on this?

[bio]

Thanks, we only have one server running DNS, DHCP and AD. Would you still recommend the default on this?

yups