This OID stores the upper port number in a range of ports that the load balancer will distribute traffic to—for example, if set to 8080, traffic can go to ports 8000–8080. It defines which network ports the virtual server will accept connections on, working with a lower port limit to create a range. An operator configures this when setting up a load balancer to handle web servers running on ports 8000–8080 instead of the standard port 80.