When you complete building your ESXi cluster, you might see a warning sign at the host level. It will tell you the management network has no redundancy. This is probably correct because the host clusters usually don’t have 2 NIC’s for the management network (at least in my home lab setup). The below recommendation is only a bypassing of the error message and of course if you want to fix it, you need to add in a redundant vmnic to the vswitch.
The below picture clearly show the host has only one NIC for all port group traffic. As my ESXi is running on a VMware Workstation and physical box has only one NIC interface.
- Go to the properties of your cluster
- Select HA from the left pane
- Click the ‘Advanced Options’ button
4. Fill in the first column of the first row by double clicking and typing the value ‘das.ignoreRedundantNetWarning’
5. Fill in the second column of the same row by double clicking and typing the value ‘True’
6. Close the Advanced Options window.
7. Now deselect the option ‘Enable HA’ and press OK.
8. HA will be disabled, this will take some time.
9. Go back to the options and select ‘Enable HA’ and press OK.
10. HA will be enabled and the warning will be gone