I seem to be having an issue with replication between our domain controllers, the setup is as follows;
two domain controllers
one is virtulised
one is physical
ping between domain controllers is fine.
Ok, so basically I had to do a bios upgrade to the server that was hosting the virtual machines (domain controller was one of the virtual machines). After the update we had a problem with our cisco switch as smart ports was enabled and stopping traffic between all virtual machines and the physical network containing all other physical machines.
Now we fixed this by disabling smart ports on the 2960 and all virtual machines can communicate successfully with the physical machines and everything is fine.
However; when we started the VM for the domain controller it took a VERY long time to bootup (common with AD / DNS problems I know). When it finally boot up I logged in and immediately tried to ping the second DC. The ping responded fine and all was ok network wise. But all of a sudden the domain controllers are not synchronising. I tried repadmin /syncall and errors are coming up, I tried dcdiag /q and I am also getting errors.
The RPC service cannot communicate with the FSMO holder (in short).
I checked and the dfsr service is running fine. I switched of any firewalls and antivirus and still they cannot communicate except with ping. Nothing has changed at all??
Can someone point me in the right direction as to where to start?
For testing purposes I created an object on the second DC and it did not replicate to the first DC (FSMO holder).
Thanks experts! :)