HP Virtual Connect for c-Class BladeSystem Version 3.70/3.75 User Guide

Virtual Connect fabrics 118
The VC-FC and FlexFabric modules use dynamic login distribution to equally distribute server logins
across all available uplink ports. The port with the least number of active logins is used for server
connectivity. When the number of logins is equal, VC-FC or FlexFabric modules utilize a round-robin
technique.