This host has no isolation addresses defined as required by vSphere HA

This content is 3 years old.

Had some troubles with an ESXi 5.5 host the past week and rebuilt some of the networking which included removing a vmkernel and re-adding to a standard vSwitch and then setting up VMotion and Management tags on it.

Came across the following error on my host in vSphere Client:

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To resolve this issue, I needed to make sure that there is a default gateway on the port group that the VMotion vmkernel is on.

Click on the ESXi Host then navigate to Configuration > Networking and on the VMkernel Port that I’m using for VMotion, click Properties…

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Next, I examine properties of the VMotion VMkernel.

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Looking at the IP Settings tab, I see there is no VMkernel Default Gateway defined, so I clicked Edit…

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I entered in my default gateway and clicked OK and then OK again to exit the switch properties dialog.

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Finally, I right-click on the ESXi host and click Reconfigure for vSphere HA

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At this point, no additional errors are reported for my ESXi host.  =)

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