> # Calculating FICON Flow Load Balance

> The FICON Flow Load Balance Calculator allows you to get the best load balancing configuration for your FICON flows. The calculator does not rely on any switch or flow discovery in the fabric. It is available from the DCNM-SAN Tools menu.

> ## Detailed Steps

> To use the FICON Flow Load Balance Calculator, follow these steps:

> 1. Choose Tools > Flow Load Balance Calculator.

> You see the Flow Load Balance Calculator.

> 2. Click Add to enter the source and destination(s) flows.
> 3. Enter source and destination using 2 byte hex (by domain and area IDs).You can copy and paste these IDs, and then edit them if required.
> 4. Enter (or select) the number of ISLs between the two switches (for example, between domain ID 0a and 0b).
> 5. Select a row to remove it and click Remove.
> 6. Select the module for which you are calculating the load balance.
> 7. Click Calculate to show the recommended topology.

> Note If you change flows or ISLs, you must click Calculate to see the new recommendation.

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