I want to ask whether all the user traffic goes through root switch. If there is redundant link available stp (Spanning Tree Protocol) block that link for loop prevention. So there is no option left the traffic will go through the other way only which is left. But you said that no traffic goes through root switch.
See Per-VLAN Spanning Tree (PVST) and Per-VLAN Spanning Tree Plus (PVST+). This would allow you send some traffic across the redundant layer 2 link.
NOTES: Spanning Tree Protocol - (IEEE) 802.1D STP (Spanning Tree Protocol) 801.1s MSTP (Multiple Spanning Trees Protocol) 802.1w RSTP (Rapid Spanning Tree Protocol) Permits only a single path toward the root bridge Is outdated, replaced by 802.1q-2014(.aq Shortest Path Bridging, SPB) Path Cost determined by the access speeds of the links determine the path cost * Don't Deploy STP MLAG Multi-Chassis Link Aggregation Groups VSS Cross-Stack Etherchannel FabricPath (uses IS-IS at layer 2) VPC (Virtual Port Channel) Brocade’s VCS (Virtual Cluster Switching) IETF TRILL (Transparent Interconnection of Lots of Links) IEEE 802.1aq (Shortest Path Bridging – SPB)