Figure 110: Spanning Tree Global Dialog; Figure 111: Spanning Tree Ports Dialog - ABB UniGear Series Engineering Manual

3.5.10.4 Redundancy Settings RSTP <Conditional>
Redundancy / Spanning Tree / Global
Operation = ON
Protocol version = RSTP
Protocol Configuration / Information
– Priority
• 4 096 for Root (Master) Switch
• 8 192 for Backup Root Switch
• 32 768 for all Bay (Slave) Switches
– Hello Time = 2 s
– Forward Delay = 15 s
– Max Age = 20 s
– MRP Compatibility = disabled; enabled if MRP ring ID is used together with RSTP

Figure 110: Spanning Tree Global dialog

Redundancy / Spanning Tree / Port
STP active = enabled for all ports
AdminEdge Port = enabled for all ports except the ring ones
AutoEdge Port = enabled for all ports

Figure 111: Spanning Tree Ports dialog

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