vMotion reports the warning: The VMotion interface of the destination host uses network, which differs from the network used by the VMotion interface of the source host

Products

• VMware vCenter Server

Issue/Introduction

Symptoms:

• When performing a vMotion migration, you see this compatibility warning:
  
  Migration from source_server to destination_server: The VMotion interface of the destination host uses network 'network 0', which differs from the network 'network 1' used by the VMotion interface of the source host

Environment

VMware VirtualCenter 2.0.x
VMware VirtualCenter 2.5.x
VMware vCenter Server 4.0.x

Resolution

This issue occurs when the network label of the VMkernel portgroup used for VMotion differs between ESX hosts.

This warning can be safely ignored as long as the VMkernel portgroups used for VMotion are connected to the correct physical network.

Note: The compatibility check only verifies that the network names of the portgroups to ensure that the network is the same, it does not check connectivity.

To eliminate the warning completely:

1. Log in to the ESX/ESXi host using vSphere Client as the root user or a user with equivalent permissions.
2. Highlight the ESX/ESXi host and click Configuration.
3. Click Networking.
4. Click Properties next to the appropriate virtual switch.
5. Select the VMkernel portgroup configured for vMotion and click on Edit.
6. Change the network label to be the same (including case sensitivity) across all ESX hosts involved in the VMotion.

Additional Information

Overview of migration compatibility error messages