In some cases, you might need to set up a load-balanced server based upon many different ports, and it is possible that a client needs to connect to that particular server using all the different ports. One scenario is RDP Gateway, which uses a mix of TCP 443 and UDP 3389; when an endpoint tries to connect to a server, we need to make sure that the client is redirected to the same gateway server instead of being redirected to another server on the other port. This is where persistency groups come in: they allow us to create a group of persisted connections against the same server.
To create persistency groups, navigate to Traffic Management | Load Balancing | Persistency Groups and click on Add. From here, give it a name and choose Persistency Type, and then add the servers that should be a part of the same group, as shown in the following screenshot:
