troubleshooting Question

DNS Resolution Issue

Avatar of nammit-man
nammit-man asked on
Microsoft Legacy OSInternet ProtocolsWindows Server 2008
4 Comments1 Solution393 ViewsLast Modified:
Hello EE,

I have i bit of a DNS issue going on at the moment that i am struggling to get my head around.
 
Our network has a number of sites, but only the two primary sites have AD/DNS.

Site A 172.16.0.0/16
Site B 172.18.0.0/16

I run VLANS and the above sites are broken down into /24 subnets  for the different departments etc just in case your wondering.

When clients at Site B ping DOMAIN.LOCAL the reply comes from and '169.254' address, when i flush the DNS cache on the client and try again, the DNS server at that site replies. 172.16.20.1 in this case.

Quite often computers at Site A cannot reach the DNS at site A, but the DNS at Site B responds. Same thing again, if i flush the DNS cache on the client at Site A. It will then get a reply from 172.16.20.1 server at Site A.

I think the cause is more likely to be related to my lack of in depth DNS knowlege, i have probably configured something wrong at some stage during the life of this network.
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