Medium
ELB
Regional
Classic Load Balancers should have cross-zone load balancing enabled
NIST
Description
This check ensures that cross-zone load balancing is enabled for Classic Load Balancers. Cross-zone load balancing distributes traffic evenly across all registered instances in all enabled Availability Zones.
Remediation
To enable cross-zone load balancing for Classic Load Balancers, follow these steps:
Steps
- Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
- On the navigation pane, under LOAD BALANCING, choose Load Balancers.
- Select the Classic Load Balancer.
- Choose the Description tab, and find the Attributes section.
- If 'Cross-Zone Load Balancing' is disabled, choose Edit attributes.
- Enable 'Cross-Zone Load Balancing' by setting it to true.
Compliance
NIST