Domain unavailable when link down to the site with PDC

[Guest]

Hello,

I have a domain D whit 2 sites A and B. There are 2 DCs on each site.
On A there is the PDC (W2K SP4)
On B one W2KSP2 and one W2K SP4

Today the link between A and B has been cut and the users on B have never
been able to open a session on D, although there 2 DCs on their site and well
replicated.

Where could be the problem? The configuration of the DCs on B seem to be
correct.

Thanks for help.

Max

 

[Dmitry Korolyov [MVP]]

How your DNS resolution is set up in site B? Which DNS server is configured
on all your workstations?

Also, verify that all domain controllers in site B are correctly registered
in DNS (srv records), since clients use DNS to locate DCs.

 

[Guest]

One DC on B is DNS server and is configured on all the workstations on B.

The 2 DCs are in the DNS but i'm not sure to understand what is a srv record?

Thanks

How your DNS resolution is set up in site B? Which DNS server is configured
on all your workstations?

Also, verify that all domain controllers in site B are correctly registered
in DNS (srv records), since clients use DNS to locate DCs.

--
Dmitry Korolyov [[email protected]]
MVP: Windows Server - Directory Services

Hello,

I have a domain D whit 2 sites A and B. There are 2 DCs on each site.
On A there is the PDC (W2K SP4)
On B one W2KSP2 and one W2K SP4

Today the link between A and B has been cut and the users on B have never
been able to open a session on D, although there 2 DCs on their site and
well
replicated.

Where could be the problem? The configuration of the DCs on B seem to be
correct.

Thanks for help.

Max

 

[Dmitry Korolyov [MVP]]

OK, you have a DNS server, but is it able to resolve queries related to your
AD domain? For example, does it has a copy of appropriate domain zone for
that domain, or does it set up for appropriate forwarding?

About SRV records - you better read some documentation about them.
Basically, each DC registers a number of specific records in DNS - called
SRV records because they allow clients to find service location. By
"service" here it is meant services required for ldap search, kerberos
authentication, global catalog and such; "location" means the hostname of
appropriate server and tcp and/or udp ports where this service can be
reached.

Any computer that is a member of domain will use DNS to locate domain
controllers; if appropriate records in dns are missing or incorrect, it will
be impossible to locate DC at all, or, incorrect DC will be used. This might
include DC from a remote site, but since in your case remote site is not
available, no DC is found.

--
Dmitry Korolyov [[email protected]]
MVP: Windows Server - Directory Services

How your DNS resolution is set up in site B? Which DNS server is
configured on all your workstations?

Also, verify that all domain controllers in site B are correctly
registered in DNS (srv records), since clients use DNS to locate DCs.

--
Dmitry Korolyov [[email protected]]
MVP: Windows Server - Directory Services

Hello,

I have a domain D whit 2 sites A and B. There are 2 DCs on each site.
On A there is the PDC (W2K SP4)
On B one W2KSP2 and one W2K SP4

Today the link between A and B has been cut and the users on B have never
been able to open a session on D, although there 2 DCs on their site and
well
replicated.

Where could be the problem? The configuration of the DCs on B seem to be
correct.

Thanks for help.

Max

 

[Enkidu]

Hello,

I have a domain D whit 2 sites A and B. There are 2
DCs on each site.
On A there is the PDC (W2K SP4)
On B one W2KSP2 and one W2K SP4

Today the link between A and B has been cut and the
users on B have never been able to open a session
on D, although there 2 DCs on their site and well
replicated.

Where could be the problem? The configuration of
the DCs on B seem to be correct.

At least one of the DCs in Site B should be a Global Catalog
server. Is this so?

Cheers,

Cliff

 

[Guest]

OK all domain controllers are registered in DNS (srv records), but no DC on B
was GC...
I hope it was the problem, but it's difficult to test since I need to cut
the link between my 2 sites.

Thank you!

 

[Dmitry Korolyov [MVP]]

In this case yes, a Global Catalog server should be available to log on,
unless you are a member of Domain Admins and have appropriate setting
configured.