The AWS environment should be configured as in the following diagram:
Add the following routes to the route table for VPC B or the subnet that contains the client instance:
| VPC A CIDR Block | AWS Transit Gateway B |
| Virtual IP Address | AWS Transit Gateway B |
Add the following routes to the route table for AWS Transit Gateway B:
| VPC A CIDR Block | AWS Transit Gateway Inter-Region Peering Attachment |
| Virtual IP address | AWS Transit Gateway Inter-Region Peering Attachment |
Add the following routes to the route table for AWS Transit Gateway A:
| VPC B CIDR Block | AWS Transit Gateway Inter-Region Peering Attachment |
| Virtual IP address | AWS Transit Gateway Attachment A |
Add the following route to the route table for VPC A or the subnets that contain the LifeKeeper instances:
| VPC B CIDR Block | AWS Transit Gateway A |
Once configured, make sure that the client can access the private address of each server in the high-availability cluster as well as the virtual IP address.
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