This is going to be a long one. We have a ticket open with Vmware, hardware vendors, and Microsoft on this one. Going in circles
We have 2 VMs running on the same host. Over the past 2 weeks, these VMs have dropped off the network about 5 times. To fix it, you have to disable and re-enable the NIC
- While the VM is down, you can't ping anything. Not the gateway, not another VM on the same host on the same virtual switch, not another VM in the environment.
- Vmotion to another host doesn't fix it
- The VM is not under heavy load when this happens.
- Ipconfig /all look normal.
- Disconnecting and re-connecting the NIC at the VM hardware level doesn't fix it
- There are entries in the Windows event logs that are a symptom of the VM being disconnected from the network (Can't resolve host names, authentication errors, etc) but, there is no event showing that the NIC disconnected.
This is on a Vblock. VCE has looked at everything hardware-wise and see nothing. No indication that there was even an outage.
Vmware has looked at everything and see nothing on the ESXi side. Vmware tools is up to date.
Microsoft is looking at it and still can't find anything.
Any thoughts? Any ideas on what else I can test for?