Dell S6100 Configuration Manual page 299

Figure 38. After Polarization Effect
Traffic flow after enabling flow-based hashing
When the flow-based hashing is enabled at all the nodes in the multi-tier network, traffic distribution is balanced at all tiers of the network
nullifying the polarization effect. Traffic occurs by the randomness for the flow-based hashing algorithm across multiple nodes in a given
network.
Equal Cost Multi-Path (ECMP) 299