How to connect a Win 2000 child domain to its parent through Cisco

[Guest]

I have several questions based on the subject line.

-I have a Windows 2000 child domain controller at a remote site. -
172.16.x.x/255.255.x.x

-I have a Windows 2000 parent domain controller at the main site. -
10.0.x.x/255.x.x.x

-The remote site is connected to the main site through a Cisco VPN
(IPSEC)tunnel. Cisco 3015 at main site Linksys VPN router at the remote site.

-DNS is configured on both the parent and the child. Other child DC's that
do not use VPN connect to the PDC and communicate fine.


Here is the problem:
I can ping the child from the parent; DNS and Netbios translates for server
name and domain
I can ping the parent from the child; DNS and Netbios translates for server
name and domain

I cannot get the child to communicate as a DC to the parent. DCDIAG fails
on the connectivity test because it claims there is no DC for the
domain(child).

Any idea what is happening here? I have exhausted all of my resources and
even tried adding WINS at the main site with static mappings for the child
and vise-versa; still nothing.

Any help or direction is greatly appreciated.

Andy

 

[Bill Grant]

What does the DC in the child site use for DNS? Itself? The local DNS
server will not have the resource records for the parent site.

With sites it is a good idea to make the local DNS server a secondary
for the DNS servers in other sites. The local DNS server can then resolve
names for all DNS zones in the network locally.