If a Connector is down, generally this might be because it doesn't have a network path (ping) or can't solve names (DNS is not working).
The easiest way to very both these problems is by performing the following steps:
- Open the VM console in vSphere. The VM can be a SH, the Broker or even the AD.
- Open a browser window on the VM itself and try to load the Workspace portal link: Example: https://wstraining.neverfail.com
- If the portal loads in the browser then the connector should work