DNS Resolution Between Child Domain

[Guest]

Hello All,

We have a windows 2003 AD setup with Three servers serviing as our Parent
domain DC (ABC.COM). Each of our three sites has their own Child domain
Houston.abc.com, Detroit.abc.com, and indy.abc.com. I can see, and access
remote systems that reside at our remote sites, but only by IP. How do we
reslove systems between sites? This information is already in DNS for AD, but
is there something we have not turned on or configured for the sites not to
reslove systems on the other child domains? Thanks.

 

[Kevin D. Goodknecht Sr. [MVP]]

Hello All,

We have a windows 2003 AD setup with Three servers serviing as our
Parent domain DC (ABC.COM). Each of our three sites has their own
Child domain Houston.abc.com, Detroit.abc.com, and indy.abc.com. I
can see, and access remote systems that reside at our remote sites,
but only by IP. How do we reslove systems between sites? This
information is already in DNS for AD, but is there something we have
not turned on or configured for the sites not to reslove systems on
the other child domains? Thanks.

Multiple ways to fix this,
1. Delegate each child name in the parent DNS, (they probably are already),
if not, open the abc.com forward lookup zone, create a new delegation named
detroit, houston, and indy. Add the NS records for each DNS server that
holds the zone. Then on the properties of the abc.com zone change the
Replication to "All DNS servers in the Active Directory Forest abc.com" Then
add NS records to the zone for all DNS servers in the forest (AFAICT, helps
speed up replication) then open AD Site and Services, expand down to the
NTDS Connections on eache server, right click on each connection, select
replicate now from the list.

2. On the properties of child zones in DNS, change the replication scope to
"All DNS server in the Active Directory forest, abc.com"

Option 1. will probably be the better chioce since it requires less data to
be replicate across the WAN. These zones update approximately every 20
minutes, option two will require three zones to replicate to all DNS servers
every 20 minutes or so. Option one requires only one zone to replicate,
parent zones tend to have fewer changes to replicate..