sites dns entries disappearing

[Jason]

Hi, we have 12 domain controllers in 12 sites each with active directory
integrated dns.
A while back (5months) we noticed that dns entries started disappearing from
'forward Lookup Zones myorg.org _msdcs dc _sites '

Previous to the 5months we updated 4 of our servers. When the dns entries
start disappearing the only servers left in dns are the 4 servers that were
upgraded?

Below is a entry from netdiag it re-registered the given dns entries and
the servers were back in the _msdcs dc _sites? But after 5 or so days the
servers would
start disappearing again.


FIX] re-register DC DNS entry
'_ldap._tcp.8891d883-fe40-4c69-ae65-dea6bc404d12.domains._msdcs.myorg.org.'
on DNS server '127.0.0.1' succeed.
[FIX] re-register DC DNS entry '_ldap._tcp.dc._msdcs.myorg.org.' on DNS
server '127.0.0.1' succeed.
[FIX] re-register DC DNS entry '_kerberos._tcp.dc._msdcs.myorg.org.' on DNS
server '127.0.0.1' succeed.
[FIX] re-register DC DNS entry
'_kerberos._tcp.WHPS._sites.dc._msdcs.myorg.org.' on DNS server '127.0.0.1'
succeed.
[FIX] re-register DC DNS entry '_ldap._tcp.WHPS._sites.dc._msdcs.myorg.org.'
on DNS server '127.0.0.1' succeed.

Any help suggestions appreciated.
jason

 

[Jason]

Hi, I notices that one server had scavenging enabled.. would this possibly
be the cause?

thx jason

 

[Guest]

Perhaps your DNS scavaging is too agressive? or you're not dynamically
registering?

Thanks,
Christopher Ransom, MCSE 2000/2003, MCSA 2000/2003, CCNA
Microsoft Enterprise Platforms Support
Windows NT/Windows 2000 Directory Services

 

[ptwilliams]

Yes, as already stated by Chris, if you have a strict (read over-zealous ;-)
scavenging routine this can cause this to happen. Netlogon is meant to
re-register every twelve hours, but I've read of issues with scavenging and
SRV records where netlogon doesn't seem to do this. MS have a fix, but the
person I spoke to who used that said it didn't change anything...

I'll see if I can find the KB ref. for the fix...


--

Paul Williams

http://www.msresource.net/
http://forums.msresource.net/