I have a parent domain that has two DCs with both those DCs being Global
Gatalog servers. I have a subdomain that also has two domain controllers and
they are both GCs as well. Whenever I boot my DCs in the parent domain or the
child domain sometimes they complain they cannot find a global catalog
server. I get the following:
----------------
Active Directory attempted to communicate with the following global catalog
and the attempts were unsuccessful.

Global catalog:
\\hrsdc1.housing.ucsb.edu

The operation in progress might be unable to continue. Active Directory will
use the domain controller locator to try to find an available global catalog
server.

Additional Data
Error value:
--------------------

Eventually the DCs(in either domain) will find a GC somewhere. My question
is the following: why would a GC in the parent domain try and find a GC in
the subdomain when the DC in the parent domain is a global catalog to begin
with? The same goes for the DCs in the subdomain...they also try to find a GC
and will find one in the parent domain even though the subdomain DCs are
global catalog servers.

Thanks,
Alex