RR DNS is not a supported method of load balancing your PCS
(clustered or non-clustered). If you require load balancing to evenly distribute the load across all your PCS
devices, it is recommended that you implement the use of an external load balancer which can meet the following requirements:
- Routes user requests to an PCS based on source-IP routing (persistence).
- Supports IPSec.
- Listens for traffic on multiple ports. (Ensure all three ports are grouped together and configured to terminate on the same SA in which the session was initiated.)
- Can be configured to manage traffic using assigned source and destination IP addresses (not destination port).
Please refer to your specific vendor documentation for how to accomplish these requirements on your load balancer.
If you are seeing these types of issues and you are using a load balancer with persistence enabled, collect a TCP capture on the physical adapter of the client to ensure that the persistence function on your load balancer is still operating properly.