AWS Config Rules: ELB Cross Zone Load Balancing Enabled
ELB_CROSS_ZONE_LOAD_BALANCING_ENABLED
Fernando Honig
Last Update 6 months ago
Description: Checks if cross-zone load balancing is enabled for the Classic Load Balancers (CLBs). This rule is NON_COMPLIANT if cross-zone load balancing is not enabled for a CLB.
Trigger type: Configuration changes
AWS Region: All supported AWS regions except Asia Pacific (Osaka), Europe (Spain), Europe (Zurich) Region
How to Resolve this Manually
Cross-Zone load balancing distributes traffic evenly across all targets in the Availability Zones enabled for the load balancer. In the AWS Console this is Enabled by Default when creating a CLB, but for reference can usually be found in the "Step 5: Add EC2 Instances" phase when constructing a new CLB.
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