Q. Can I use a Network Load Balancing feature in Azure?

Q. Can I use a Network Load Balancing feature in Azure?

Q. Can I use a Network Load Balancing feature in Azure?

A. No. 

Windows Server has a Network Load Balancing feature which, as the name suggests, enables the load balancing of traffic between servers running the Network Load Balancing feature. This feature uses layer-two broadcast or multicast to enable the distribution of incoming traffic to all nodes participating in the NLB cluster. Azure does not support layer-two broadcast/multicast, which means the NLB feature of Windows cannot be used in Azure. This is confirmed at https://support.microsoft.com/en-us/kb/2721672?wa=wsignin1.0.

Instead, you should leverage the load balancing features of Azure. These can be used for cloud service endpoints, or as a discrete load balancer in the new Azure Resource Manager model. Additionally, the Internal Load Balancer can be used to balance traffic between VMs within an Azure Virtual Network.

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