A pool member is a layer 4 object that is composed of the IP address and listening port of a service. For example, a pool member might be a web server with a configured IP address of
10.30.0.2 listening on TCP port
A virtual IP, or VIP, is an IP address that resides on the load balancer and listens for incoming connections. The load balancer then balances client connections among the members of the associated pool. A virtual IP is usually exposed to the Internet and often mapped to a domain name.