I have a 2008R2 domain with Win7 clients. This has happened twice in the last week and it is really throwing me off. Some Domain Controllers are also DHCP/DNS servers. We have been having some power issues at this site, but for whatever reason twice, I have seen my host record for that domain controller disappear. It is a manually created static address on a vlan with no DHCP. After the problem was reported, I recreate the record manually(it is all static with no expiration date, so it should not be getting scavenged) Then I get a call that DHCP is not working and I check and the service is running, but no leases are being handed out until I restart the service. Does anyone have any ideas on either of these?
1. Is there anything that could cause a host record for a DC/DNS/DHCP server to get removed if it is static? Weird power problems, etc? I do have it set to "Register this connections address in DNS"
2. Any ideas on why a 2008 R2 DHCP server shows the service as running, but stops handing out IP addresses? I have not done any traces to see if discover packets are making it over, but my only guess is that the IP helper statements on the network side might be using a hostname?
If anyone has any ideas about either, I would really appreciate it.
Dave