NimbostratusThe autoscale BIG-IP instances will sync configs. You can review the github templates README for more info on clustering. It happens automatically via CFT template deployment.
Your questions...
Who will assign the request to the LTMs?
-Yes, it will be an ELB in tier 1 doing basic L4 traffic distribution to tier 2 BIG-IP instances.
How does the member server know its return traffic?
-Each BIG-IP instance has its own IP config. There is no sharing of floating IPs. Therefore, each BIG-IP instance will send traffic to the backend server via its own unique self-IP. Return traffic from server to BIG-IP will talk to the AWS cloud hyervisor and route appropriately to the correct BIG-IP instance.
