DNS questions

[JMcB]

Inherited DNS system with each of the DC-DNS servers were setup differently
(primary, secondary, etc). We have the following setup:
Site1: domain controllers with DNS; DHCP server. No errors in DHCP logs.
Site2: domain controllers with DNS
Site3: domain controllers with DHCP, no DNS. No errors in DHCP logs.
Site4: domain controllers with DHCP, no DNS. Errors in DCHP "DNS Update
Failed"
Bandwidth isn't an issue.
Subnets--numerous going into either Site1 or Site2.

They have all been changed to AD integrated--will this correct the various
primary/secondary configurations out there? If not, can they be easily
changed and how.

Reverse Lookup Zones
Should I have one for each subnet, even if they don't have a DC (within
reason, i.e. 172.26.9 and 172.26.8 could be 172.26.0.0)?

DHCP & DNS--getting errors--related to Reverse Lookup zones? We're seeing a
lot of "DNS Update Failed" in our DHCP logs.

I've been spending the last couple of weeks re-learning MS-DNS, but am
unsure as to where to start with some of these issues.
--
JMcB

[James Yeomans BSc, MCSE]

Hi there, you are definitely right to change all the zones to AD integrated
as that will definitely help and reduce complexity. On an internal LAN you
dont need reverse lookup zones as they wont be used unless you are using a
specific application that uses reverse dns for security reasons.
James.
--
James Yeomans, BSc, MCSE

[oz.ozugurlu]

Here are couple links for you to catch up on DNS, it is true the Reverse
lookup zone is not required for AD to function properly but strongly
recommended for various reasons, so having it is a good thing.

Best Practice Active Directory Design
http://technet.microsoft.com/en-us/library/bb727085.aspx
http://technet.microsoft.com/en-us/library/cc759550.aspx
--oz

--
Oz Ozugurlu
MVP (Exchange)
MCITP (EMA), MCITP (SA)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +

o...@SMTp25.org
http://smtp25.blogspot.com (Blog)