Reference Guide
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. Trac load balancing is not achievable with this kind of priority assignment. You must assign each instance a dierent 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 dierent forwarding topology generates for each VLAN.
To achieve RPVST+ load balancing, assign a dierent priority on each bridge.
Layer 2
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