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Avatar of Suliman Abu Kharroub
Suliman Abu KharroubFlag for Jordan

asked on

DNS resolve order

Hello...

Network and sites:
3 sites: A, B and C.
Site A = 192.168.1.1/24 and 172.16.4.0/24
Site B= 10.0.0.0/24
Site C = 10.5.0.0/24

********************
Active Directory and DNS:
Site A has 2 DCs:
DC1 =192.168.1.1 (DNS server)
DC2 = 192.168.1.2/ 172.16.4.1 (DNS)

Site B:
RODC3 = 10.0.0.1 (DNS)

Site C:
DC4= 172.16.5.1 (DNS)
*****************************

Site B can only access 192.169.1.x in site A but not 172.16.4.x.

the problem is, when a client try to resolve mydomain.com or dc2 sometime it is resolved to 172.16.4.1 which is not reachable from site B network.

AD replication works fine with out issue as Site A is the hub and replicate to other sites.

Is there a way to configure DNS to response to clients queries in site B from mycompany.com with 192.168.1.1 always not 172.16.4.1 ? in other words, I want all clients in site B to be able to communicate with DC1 or DC2 in 192.168.1.1 vlan.

DCs are mix of 2012 and 2012 R2.

Thanks!
Avatar of Sajid Shaik M
Sajid Shaik M
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check the DNS entries on RODC

access DNS of site B from Primery Domain and check the forwarder point to your primary domain ..

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on Site B domain you should have the primary dns of the same domain and  secondary point to your main site primary domain.

all the best
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footech
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Avatar of Suliman Abu Kharroub

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Thank you guys for your answers and good ideas that provided.... I totally agree that mutli-homed DC is not a good idea and needed to be changed. is there any official document explains the issues of having multi-home DC ?

my plan to get rid of the second nic in that DC, but need to convene the management.
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Thanks a lot!