Understanding load balancer rules

So far, we have defined frontend and backend pools for our load balancer. Now, we need to connect those components by providing a set of rules that will tell Azure Load Balancer how to distribute the load. A rule is a simple map of values that links our frontend IP address with the set of machines defined for a given backend pool. In the upcoming sections, you’ll create a rule and configure it. We’ll also discuss more advanced topics, such as Floating IP and high-availability ports.

Creating a load balancer rule

Let’s create our first rule using the following command:

az network lb rule create \
  -g <resource-group-name> \
  --lb-name <load-balancer-name> \
  -n WebServer \
  --protocol Tcp \
  --frontend-ip LoadBalancerFrontEnd \
  --frontend-port 80 \
  --backend-pool-name SecondPool \
  --backend-port 80

The rule we’...