None | No load balancing. Select None when the cluster interfaces are connected to load balancing switches. If you select None, the Primary unit does not load balance traffic and the subordinate units process incoming traffic that does not come from the Primary unit. For all other load balancing schedules, all traffic is received first by the Primary unit, and then forwarded to the subordinate units. The subordinate units only receive and process packets sent from the primary unit. |
Hub | Load balancing if the cluster interfaces are connected to a hub. Traffic is distributed to cluster units based on the source IP and destination IP of the packet. |
Least-Connection | If the cluster units are connected using switches, select Least Connection to distribute network traffic to the cluster unit currently processing the fewest connections. |
Round-Robin | If the cluster units are connected using switches, select Round-Robin to distribute network traffic to the next available cluster unit. |
Weighted Round‑Robin | Similar to round robin, but weighted values are assigned to each of the units in a cluster based on their capacity and on how many connections they are currently processing. For example, the primary unit should have a lower weighted value because it handles scheduling and forwards traffic. Weighted round robin distributes traffic more evenly because units that are not processing traffic will be more likely to receive new connections than units that are very busy. |
Random | If the cluster units are connected using switches, select Random to randomly distribute traffic to cluster units. |
IP | Load balancing according to IP address. If the cluster units are connected using switches, select IP to distribute traffic to units in a cluster based on the source IP and destination IP of the packet. |
IP Port | Load balancing according to IP address and port. If the cluster units are connected using switches, select IP Port to distribute traffic to units in a cluster based on the source IP, source port, destination IP, and destination port of the packet. |