Load balancing between DNCA instances using port ranges
About this task
When you populate the port ranges across all available DNCA instances, the DNCA assigns the same number of ports to each available DNCA instance. Typically, however, the enterprise network infrastructure does not evenly distribute the traffic load across the entire range of available ports. After you populate port ranges, you can discover that the traffic load is not evenly distributed between the instances. For example, DNCA Instance 0 can be processing 75% of the forwarded data, while DNCA Instance 1 is processing only 25%, even though each instance is listening on the same number of ports.
Using the steps below, you can adjust the port ranges assigned to each DNCA instance to balance the load between available instances. This process can require iterative tuning and tweaking and should factor peak traffic periods.
Procedure
- Instantiate the required number of DNCA instances. See View Instances.
- In the Interface tab, click Populate Ports.
- Save your changes.
- The previous step distributes the load traffic evenly across
all ports. The following steps must be repeated until the data load
is distributed evenly across all available ports to the DNCA instances:
- When your adjustments are complete, verify that the entire range of available ports (1024 - 65535) is covered by your set of port ranges. Gaps and overlaps must be eliminated.