Dell S5148F-ON OS10 Enterprise Edition User Guide Release 10.3.2E-R2 - Page 155

3 Enable Rapid-PVST+ (only required if another variation of STP is present). 4 (Optional) Select a non-default bridge-priority for the VLAN for load balancing. By default, each VLAN instance is assigned default bridge priority 32768. For example, all three instances have the same forwarding topology. Traffic load balancing is not achievable with this kind of priority assignment. You must assign each instance a different priority to achieve load balancing, as shown in Load Balancing with RPVST+. Load balance and root selection All VLANs use the same forwarding topology - R2 is elected as the root and all 10G Ethernet ports have the same cost. RPVST+ changes the bridge priority of each bridge so that a different forwarding topology generates for each VLAN. To achieve RPVST+ load balancing, assign a different priority on each bridge. Layer 2 155