Clustering on the agent side
The older style each server listed is treat as its own cluster, if failover is check all request go to the first server listed, load balance selected request is evenly distributed
[17731/57195376][Fri Sep 23 2016 14:45:39] policyserver='lodbl510vm039.ca.com,44441,44442,44443'.
[17731/57195376][Fri Sep 23 2016 14:45:39] policyserver='10.130.158.146,44441,44442,44443'.
New cluster configuration all request go to servers in the first cluster, requests are then load balanced within the cluster. For failover if the number of server down in cluster 1 is over the failover thresholder percent failover occurs to cluster 2
[18106/81427312][Fri Sep 23 2016 14:49:51] cluster_1='2'.
[18106/81427312][Fri Sep 23 2016 14:49:51] cluster_1='10.130.158.146,44443'.
[18106/81427312][Fri Sep 23 2016 14:49:51] cluster_1='lodbl510vm039.ca.com,44443'.
[18106/81427312][Fri Sep 23 2016 14:49:51] cluster_1='0'.
[18106/81427312][Fri Sep 23 2016 14:49:51] cluster_2='2'.
[18106/81427312][Fri Sep 23 2016 14:49:51] cluster_2='lodbl510vm039.ca.com,44443'.
[18106/81427312][Fri Sep 23 2016 14:49:51] cluster_2='lodbl510vm039.ca.com,44443'.
[18106/81427312][Fri Sep 23 2016 14:49:51] cluster_2='0'.