458 CHAPTER 23: MSTP C ONFIGURATIONConfiguration TaskListBefore configuration, you need to know the position of each device in each MSTinstance: root bridge or leave node. In each instance, one, and only one deviceacts as the root bridge, while all others as leaf nodes.Task Remarks“Configuring the RootBridge” on page 459“Configuring an MST Region”on page 459Required“Specifying the Root Bridge or aSecondary Root Bridge” on page460Optional“Configuring the Work Mode ofMSTP Device” on page 462Optional“Configuring the Priority of theCurrent Device” on page 462Optional“Configuring the MaximumHops of an MST Region” onpage 463Optional“Configuring the NetworkDiameter of a SwitchedNetwork” on page 464Optional“Configuring Timers of MSTP”on page 464Optional“Configuring the TimeoutFactor” on page 465Optional“Configuring the MaximumTransmission Rate of Ports” onpage 466Optional“Configuring Ports as EdgePorts” on page 467Optional“Configuring Whether PortsConnect to Point-to-Point Links”on page 467Optional“Configuring the Mode a PortUses to Recognize/Send MSTPPackets” on page 468Optional“Enabling the Output of PortState Transition Information” onpage 469Optional“Enabling the MSTP Feature” onpage 469Required