active directory over multiple vlans

I have the following AD structure:

1 forest with 1 DC/GC
6 multiple sub-domains on six different vlans.  su-domain 1 is on same subnet as the dc/gc
currently, only one wins and dns server and that is on the dc/gc

from network neighborhood, I can only see the dc/gc and sub-domain 1, which is on the same vlan as the dc/gc.  I can't see the other sub-domains, yet, replication, dns lookup and ping works to the other domains.  I need to get this resolved as a server application that I am running depends on windows enumeration of the domains.  Can someone tell me why this is happening and what I need to do to resolve this issue?
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Henrik JohanssonSystems engineerCommented:
Browsing is using NetBIOS which is not routable if not enabling NetBIOS over TCP/IP (NetBT) or the clients is configured to use WINS.

Not related to the browsing issue, but as described in the question, you should also configure atleast 2 servers as GC in each AD-site and atleast 2 DNS servers to get redundancy and avoid SPOF when the single GC/DNS is restarted. Configure each DC acting as DNS to use another DNS as secondary DNS.
txagcol1Author Commented:
so, you're saying that we should not be using wins?  As for the second issue, I agree.  Just have had time to do the other implermentations.
Henrik JohanssonSystems engineerCommented:
No, WINS is used for browsing.
If you have multiple WINS servers, you nead to configure them to use the other servers as replicating partners.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Internet Protocols

From novice to tech pro — start learning today.