# `AWSConfigRemediation-EnableNLBCrossZoneLoadBalancing`
<a name="automation-aws-enable-nlb-crosszone"></a>

 **Description** 

 The `AWSConfigRemediation-EnableNLBCrossZoneLoadBalancing` runbook enables cross zone load balancing for the network load balancer (NLB) you specify. 

 [Run this Automation (console)](https://console.aws.amazon.com/systems-manager/automation/execute/AWSConfigRemediation-EnableNLBCrossZoneLoadBalancing) 

**Document type**

Automation

**Owner**

Amazon

**Platforms**

Linux, macOS, Windows

**Parameters**
+ AutomationAssumeRole

  Type: String

  Description: (Required) The Amazon Resource Name (ARN) of the AWS Identity and Access Management (IAM) role that allows Systems Manager Automation to perform the actions on your behalf.
+ LoadBalancerArn

  Type: String

  Description: (Required) The Amazon Resource Name (ARN) of the NLB that you want to enable cross zone load balancing on.

**Required IAM permissions**

The `AutomationAssumeRole` parameter requires the following actions to use the runbook successfully.
+  `ssm:StartAutomationExecution` 
+  `ssm:GetAutomationExecution` 
+  `elasticloadbalancing:DescribeLoadBalancerAttributes` 
+  `elasticloadbalancing:ModifyLoadBalancerAttributes` 

 **Document Steps** 
+  `aws:executeAwsApi` - Enables cross zone load balancing for the NLB you specify in the `LoadBalancerArn` parameter. 
+  `aws:executeScript` - Verifies cross zone load balancing has been enabled on the NLB.