# Explanation
<a name="API_Explanation"></a>

Describes an explanation code for an unreachable path. For more information, see [Reachability Analyzer explanation codes](https://docs.aws.amazon.com/vpc/latest/reachability/explanation-codes.html).

## Contents
<a name="API_Explanation_Contents"></a>

 ** acl **   
The network ACL.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** aclRule **   
The network ACL rule.  
Type: [AnalysisAclRule](API_AnalysisAclRule.md) object  
Required: No

 ** address **   
The IPv4 address, in CIDR notation.  
Type: String  
Length Constraints: Minimum length of 0. Maximum length of 15.  
Pattern: `^([0-9]{1,3}.){3}[0-9]{1,3}$`   
Required: No

 ** AddressSet.N **   
The IPv4 addresses, in CIDR notation.  
Type: Array of strings  
Length Constraints: Minimum length of 0. Maximum length of 15.  
Pattern: `^([0-9]{1,3}.){3}[0-9]{1,3}$`   
Required: No

 ** attachedTo **   
The resource to which the component is attached.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** AvailabilityZoneIdSet.N **   
The IDs of the Availability Zones.  
Type: Array of strings  
Required: No

 ** AvailabilityZoneSet.N **   
The Availability Zones.  
Type: Array of strings  
Required: No

 ** CidrSet.N **   
The CIDR ranges.  
Type: Array of strings  
Required: No

 ** classicLoadBalancerListener **   
The listener for a Classic Load Balancer.  
Type: [AnalysisLoadBalancerListener](API_AnalysisLoadBalancerListener.md) object  
Required: No

 ** component **   
The component.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** componentAccount **   
The AWS account for the component.  
Type: String  
Pattern: `\d{12}`   
Required: No

 ** componentRegion **   
The Region for the component.  
Type: String  
Pattern: `[a-z]{2}-[a-z]+-[1-9]+`   
Required: No

 ** customerGateway **   
The customer gateway.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** destination **   
The destination.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** destinationVpc **   
The destination VPC.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** direction **   
The direction. The following are the possible values:  
+ egress
+ ingress
Type: String  
Required: No

 ** elasticLoadBalancerListener **   
The load balancer listener.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** explanationCode **   
The explanation code.  
Type: String  
Required: No

 ** firewallStatefulRule **   
The Network Firewall stateful rule.  
Type: [FirewallStatefulRule](API_FirewallStatefulRule.md) object  
Required: No

 ** firewallStatelessRule **   
The Network Firewall stateless rule.  
Type: [FirewallStatelessRule](API_FirewallStatelessRule.md) object  
Required: No

 ** ingressRouteTable **   
The route table.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** internetGateway **   
The internet gateway.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** loadBalancerArn **   
The Amazon Resource Name (ARN) of the load balancer.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1283.  
Required: No

 ** loadBalancerListenerPort **   
The listener port of the load balancer.  
Type: Integer  
Valid Range: Minimum value of 0. Maximum value of 65535.  
Required: No

 ** loadBalancerTarget **   
The target.  
Type: [AnalysisLoadBalancerTarget](API_AnalysisLoadBalancerTarget.md) object  
Required: No

 ** loadBalancerTargetGroup **   
The target group.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** LoadBalancerTargetGroupSet.N **   
The target groups.  
Type: Array of [AnalysisComponent](API_AnalysisComponent.md) objects  
Required: No

 ** loadBalancerTargetPort **   
The target port.  
Type: Integer  
Valid Range: Minimum value of 0. Maximum value of 65535.  
Required: No

 ** missingComponent **   
The missing component.  
Type: String  
Required: No

 ** natGateway **   
The NAT gateway.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** networkInterface **   
The network interface.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** packetField **   
The packet field.  
Type: String  
Required: No

 ** port **   
The port.  
Type: Integer  
Valid Range: Minimum value of 0. Maximum value of 65535.  
Required: No

 ** PortRangeSet.N **   
The port ranges.  
Type: Array of [PortRange](API_PortRange.md) objects  
Required: No

 ** prefixList **   
The prefix list.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** ProtocolSet.N **   
The protocols.  
Type: Array of strings  
Required: No

 ** routeTable **   
The route table.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** routeTableRoute **   
The route table route.  
Type: [AnalysisRouteTableRoute](API_AnalysisRouteTableRoute.md) object  
Required: No

 ** securityGroup **   
The security group.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** securityGroupRule **   
The security group rule.  
Type: [AnalysisSecurityGroupRule](API_AnalysisSecurityGroupRule.md) object  
Required: No

 ** SecurityGroupSet.N **   
The security groups.  
Type: Array of [AnalysisComponent](API_AnalysisComponent.md) objects  
Required: No

 ** sourceVpc **   
The source VPC.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** state **   
The state.  
Type: String  
Required: No

 ** subnet **   
The subnet.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** subnetRouteTable **   
The route table for the subnet.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** transitGateway **   
The transit gateway.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** transitGatewayAttachment **   
The transit gateway attachment.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** transitGatewayRouteTable **   
The transit gateway route table.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** transitGatewayRouteTableRoute **   
The transit gateway route table route.  
Type: [TransitGatewayRouteTableRoute](API_TransitGatewayRouteTableRoute.md) object  
Required: No

 ** vpc **   
The component VPC.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** vpcEndpoint **   
The VPC endpoint.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** vpcPeeringConnection **   
The VPC peering connection.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** vpnConnection **   
The VPN connection.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

 ** vpnGateway **   
The VPN gateway.  
Type: [AnalysisComponent](API_AnalysisComponent.md) object  
Required: No

## See Also
<a name="API_Explanation_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/Explanation) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/Explanation) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/Explanation)