Method 2 - Multiple Port Number Groups

Multiple port group affinity does not rely on source IP address for affinity. Instead, the load balancer is configured to route the secondary Horizon protocols based on a group of unique port numbers assigned to each Unified Access Gateway appliance. The primary Horizon protocol on HTTPS port 443 is load balanced to allocate the session to a specific Unified Access Gateway appliance based on health and least loaded. The secondary connections are then routed to the correct Unified Access Gateway appliance based on the following Load Balancer configuration table.

The same port mapping scheme can be used for additional Unified Access Gateway appliances 03 > 99. For example, we use the following mapping convention in this document for Unified Access Gateway.

The Unified Access Gateway Configuration for External URLs is shown below.

In our example, the FQDN http://uag.myco.com resolves to 10.10.10.154.

Advantages of Multiple Port Number Groups:

• Does not rely on source IP affinity
• Does not require multiple public virtual IP addresses

Disadvantages of Multiple Port Number Groups:

Uses non-standard port numbers from the Internet although the port numbers on the Unified Access Gateway appliances themselves are standard.