Unable to add reserved IP to cloud service / VM

Question

Hi
I have a "Visual Studio Premium with MSDN" subscription.
In order to perform some application testing I need a VM with a fixed/reserved public IP.
I have set up a cloud service assigned to a VM with Windows Server 2012, and I also have set up a reserved IP.
Now, when I try to link the reserved IP with the cloud service I get an error:
Set-AzureReservedIPAssociation : BadRequest: The subscription is not authorized for feature vipmobility.
At line:1 char:1
+ Set-AzureReservedIPAssociation -ReservedIPName myresip1 -ServiceName testserv1 ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : CloseError: (:) [Set-AzureReservedIPAssociation], CloudException
+ FullyQualifiedErrorId : Microsoft.WindowsAzure.Commands.ServiceManagement.IaaS.SetAzureReservedIPAssociationCmdlet
The command I used in Azure PowerShell was: 
Set-AzureReservedIPAssociation -ReservedIPName myresip1 -ServiceName testserver1
What is this vipmobility? Why am I getting this error?

Answer 1

Hi,
Reserved IP is associated with a Cloud Service.
Reserved IP allows you to reserve Virtual IP address in Azure, which you can then associate to a new cloud service. The Reserved IP address is sticky, meaning once it’s associated with the cloud service, it won’t change unless you decide to disassociate
it. In a Virtual Machine scenario, the Reserved IP address will remain associated with your cloud service even when all the VMs in the cloud service are stop/deallocated. At this time, you can’t reserve an IP address for a cloud service that you have already
created.
However if you want to retain the DIP of the VM, you can use Static DIP. 
A static DIP stays with the VM even through a stop/deprovision state. You can specify a static DIP by using PowerShell at the time you create the VM, or you can update an existing VM. However it is required that the VM is a part of Azure VNET.
To know more about setting up a Static IP and other operations that can be performed on a VM, you might want to refer to the below link
https://msdn.microsoft.com/en-us/library/azure/dn630228.aspx?f=255&MSPPError=-2147217396
Hope this helps !
Regards,
Sowmya