MatthijsTH
Technical User
Hello,
I am having a few problems with Active Directory, DHCP and DNS.
First problem:
There was a domain migration in the past and someone before my time left 3 non-existing domain controllers in the AD.
I'm affraid to delete them and because they don't exist anymore I can't run the dcpromo.
Can I just leave them there or is there a safe way to get rid of them?
Second problem:
It takes a really long time before a client computer gets an IP address from our DHCP server.
We have only one DHCP server, but when I look in DHCP. There are two servers. One is disabled and says that the DHCP server cannot be found.
This is an existing server, but not a DHCP server (also on another domain)(DHCP service is non-existing also...).
Can I just delete this? Does this affect the time before a client gets an IP address?
When I look in the DHCP scope options I see that for DNS options that there are a few server IP addresses filled in I don't want there. For instance one server is one of the old DC's, but is now another server (with the same IP address). It's not a DNS server anymore. I can imagine that that causes a lot of network traffic for nothing, because the server cannot give an answer to the dns request.
When I check the network traffic with the network monitor on that server it get's a lot of DNS requests. I looked on my local laptop with Wireshark and see a lot of movement with the IP address of the old DNS server.
Can I delete this one and change the order of servers in the DNS scope option without messing anything up?
So you see, finding a problem is one, but solving it is a whole other ballgame......
Thanks to my predecessor (hopefully I got this word right...)
I'm depending on you guys/girls thank you very much in advance!!
I am having a few problems with Active Directory, DHCP and DNS.
First problem:
There was a domain migration in the past and someone before my time left 3 non-existing domain controllers in the AD.
I'm affraid to delete them and because they don't exist anymore I can't run the dcpromo.
Can I just leave them there or is there a safe way to get rid of them?
Second problem:
It takes a really long time before a client computer gets an IP address from our DHCP server.
We have only one DHCP server, but when I look in DHCP. There are two servers. One is disabled and says that the DHCP server cannot be found.
This is an existing server, but not a DHCP server (also on another domain)(DHCP service is non-existing also...).
Can I just delete this? Does this affect the time before a client gets an IP address?
When I look in the DHCP scope options I see that for DNS options that there are a few server IP addresses filled in I don't want there. For instance one server is one of the old DC's, but is now another server (with the same IP address). It's not a DNS server anymore. I can imagine that that causes a lot of network traffic for nothing, because the server cannot give an answer to the dns request.
When I check the network traffic with the network monitor on that server it get's a lot of DNS requests. I looked on my local laptop with Wireshark and see a lot of movement with the IP address of the old DNS server.
Can I delete this one and change the order of servers in the DNS scope option without messing anything up?
So you see, finding a problem is one, but solving it is a whole other ballgame......
Thanks to my predecessor (hopefully I got this word right...)
I'm depending on you guys/girls thank you very much in advance!!
