This is very similar to a situation I experienced the other day. It's all
in a thread over on the Exchange list ("Exchange 2010 AD Topology service
weirdness"). Unfortunately, I don't have a resolution for you. In
addition to the Exchange issue, I saw exactly the same thing with slow
logons, slow group policy processing, odd ping behavior, etc.
The only thing I could find that was related to what was going on (and only
partially at that) was the kb article at
http://support.microsoft.com/kb/2408181.
Good luck. I hope you get this resolved.
On Tue, Jul 3, 2012 at 1:07 PM, Glen Johnson <[email protected]> wrote:
> Need help please.
> We have 3 x 2008r2 domain controllers.
> We've been fighting with some unusually slow domain logins and other
> flakiness for a while.
> For example navigating between OUs in active directory users and computers
> is painfully slow.
> While testing basic connectivity, I found that a ipv6 ping to one of our
> domain controllers fails, but here is the interesting part.
> If I ping -6 from domain controller to my workstation, then for a couple
> minutes, ping -6 from my workstation to the domain controller works.
> After just about 2 minutes, it begins failing again when I ping
> workstation to server. Destination host unreachable is the error.
> Ping -6 from my workstation to all other servers and domain controllers
> work fine.
> I checked the windows firewall on the failing computer and it looks
> identical to the other 2 domain controllers.
> One point that may be relevant. The failing DC has 2 nics. I did try
> disabling one of the nics and rebooting. No help.
> Turned windows firewall off, no help.
> Any suggestions appreciated.
>
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