What does “nltest /dsgetsite” report?

From: Richard Stovall [mailto:rich...@gmail.com]
Sent: Saturday, June 30, 2012 5:34 PM
To: MS-Exchange Admin Issues
Subject: Exchange 2010 AD Topology service weirdness

I applied SP2 UR3 today to my single Exchange 2010 server.  Now, after a few 
minutes of uptime, the AD topology service appears to lose the ability to reach 
any of the DCs in the server's local site.  The App log's 2080 events go from 
this:

In-site:
DC4.domain.local       CDG 1 7 7 1 0 1 1 7 1
DC2.domain.local       CDG 1 7 7 1 0 1 1 7 1
dc1.domain.local         CDG 1 7 7 1 0 1 1 7 1
 Out-of-site:
SLCDC.domain.local             CDG 1 7 7 1 0 1 1 7 1

to this:

In-site:
DC4.domain.local       CDG 1 0 0 1 0 0 0 0 0
DC2.domain.local       CDG 1 0 0 1 0 0 0 0 0
dc1.domain.local         CDG 1 0 0 1 0 0 0 0 0
 Out-of-site:
SLCDC.domain.local CDG 1 7 7 1 0 1 1 7 1


In about 15 minutes after a reboot.

Everything is still working, but I have no idea what's going on.  One thing to 
note, I did try to install UR3 without running it from an elevated command 
prompt and it failed.  That's when I first noticed this.  A reboot of the 
server cleared up the 2080 issue briefly, but it returned when I installed RU3 
and it succeeded.  The local DCs are all up and running without issue.

There are also tons of 2084 and 2085 events on the Exchange server related to 
this.  For example:

"Process STORE.EXE (PID=5800). No Global Catalog server is up in the local site 
'Default-First-Site-Name'. Exchange Active Directory Provider will use the 
following out of site global catalog servers:
SLCDC.domain.local"

Any thoughts out there about how to fix this?



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