• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 360
  • Last Modified:

DNS issues after installing new 2008 Domain Controller / DNS server

Hi Experts, i am in the process of upgrading our estate to 2008 r2. I have two DC's on 2003 sever and plan on installing 2008 dc's and will then migrate all the roles before eventually removing the 2003 servers.

So far i have the first 2008 DC, installed and have AD & DNS working and replication all seems to be up and running but as soon as this has happenend i am starting to get issues with one of my 2003 DNS servers especially when be access from a remote office.

The users in the remote office point to my main DC (still on 2003) and this is also the Prmiary DNS server. For some reason we now cannot ping it remotley and locally we are seeing some issues with GFI not being able to use this DNS server for domain lookups.

When i perfom a Simple & Recursive test on my 2003 DNS server the recursive is now Intermittently Failing...

Any idea's


0
James Hurley
Asked:
James Hurley
  • 3
  • 2
  • 2
1 Solution
 
Darius GhassemCommented:
Can you ping the IP address of the server?
0
 
isaman07Commented:
What are the servers that your DNS options point to on your DHCp server?
0
 
James HurleyIT ManagerAuthor Commented:
Hi Experts, i can ping locally the IP but not from our London office. I can ping servers that are in the same subnet but not that one.

my DHCP still points to my old 2003 DNS servers.
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
Darius GhassemCommented:
If you can not ping by IP address then this is pointing to a connection issue and not a DNS issue since pinging by IP address does NOT use DNS
0
 
isaman07Commented:
I would strongly recommend to check the default gateway on your clients and the server, esepecialy on the server and take a look at the routing table, as Darius pointed out, pinging by IP has absolutely nothing to do with DNS.
Try to change the adapter on your server to see if this is adapter caused problems, update the drivers etc...
0
 
James HurleyIT ManagerAuthor Commented:
I never did resolve this. in the end we took out one of the 2003 domain controllers as we were retiring it anyway. problem went away when we removed dns.
0
 
James HurleyIT ManagerAuthor Commented:
closed
0

Featured Post

Making Bulk Changes to Active Directory

Watch this video to see how easy it is to make mass changes to Active Directory from an external text file without using complicated scripts.

  • 3
  • 2
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now