I rencently did an upgrade from 2003 AD to 2008 AD onto a new box. Ive kept the 2003 running as a secondary system, but i moved the FSMO files, ran everything properly including setting up the DNS.
Now heres my issue, I have random computers on my network (all static IP btw) that are flaking out for a period of 5-15 minutes. They can see external IP addresses fine (I use 18.104.22.168 as a secondary DNS) but cant see the SQL or Sharepoint server. Have to either reboot or do a dns flush in order for it to work and even then sometimes that doesnt work.
The old server 192.168.1.10 and the new server 192.168.1.5 both seem to work and I changed all the workstaions to reflect the .5 unit. Does anyone know what could be causing this?
Im a software guy by nature, developing C# apps etc, Im not a network admin by trade so its been soewhat of a leaning curve although I do have some experience.