Azure load balancers table

Azure documentation

• https://docs.microsoft.com/en-us/azure/load-balancer/ 

• https://docs.microsoft.com/en-us/azure/load-balancer/skus

Load balancer name

The load balancer name can't have white spaces

Algorithm

• DEFAULT

• SOURCEIP

• SOURCEIPPROTOCOL

Addresses and networks

• The load balancer must have one and only one public OR private address

• The load balancer can only be attached to one subnet. Mandatory for private addresses  

Routing rules

• You must create at least one routing rule.
  There must always be at least one routing rule in the load balancer

• You can only create one routing rule per incoming port and one rule per outgoing port
  (i.e. two rules cannot receive traffic on the same port or route it to the same port).

Routing rule protocol in

TCP and UDP

Routing rule port in

IN and OUT port must use the same protocol

SSL certificate

Not yet supported

Health check

• One health check must be configured for the load balancer

  • Protocols supported for health check

    • Basic: TCP, HTTP

    • Standard: TCP, HTTP, HTTPS

  • Health check interval must be between 5 and 2147483646

  • Health check port must be between 1 and 65535

Firewalls

• Basic: Azure NSGs are not supported for Basic load balancers

• Standard: You must add a firewall to your VMs to allow load balancer traffic

Nodes

• Azure does not allow you to attach a VM with a Basic hardware profile to a load balancer

• Basic: You must add VMs to an Availability set in order to use them with a load balancer

• Standard: The VMs must be in the same virtual network