1-15z Within an MST region, the packet is forwarded along the corresponding MSTI.z Between two MST regions, the packet is forwarded along the CST.Implementation of MSTP on DevicesMSTP is compatible with STP and RSTP. STP and RSTP protocol packets can be recognized bydevices running MSTP and used for spanning tree calculation.In addition to basic MSTP functions, many special functions are provided for ease of management, asfollows:z Root bridge holdz Root bridge backupz Root guardz BPDU guardz Loop guardz TC-BPDU guardz BPDU droppingProtocols and StandardsMSTP is documented in:z IEEE 802.1d: Spanning Tree Protocolz IEEE 802.1w: Rapid Spanning Tree Protocolz IEEE 802.1s: Multiple Spanning Tree ProtocolMSTP Configuration Task ListBefore configuring MSTP, you need to know the role of each device in each MSTI: root bridge or leavenode. In each MSTI, one, and only one device acts as the root bridge, while all others as leaf nodes.Complete these tasks to configure MSTP:Task RemarksConfiguring an MST Region RequiredConfiguring the Root Bridge or a Secondary Root Bridge OptionalConfiguring the Work Mode of an MSTP Device OptionalConfiguring the Priority of a Device OptionalConfiguring the Maximum Hops of an MST Region OptionalConfiguring the Network Diameter of a Switched Network OptionalConfiguring Timers of MSTP OptionalConfiguring the Timeout Factor OptionalConfiguring the Maximum Port Rate OptionalConfiguring Ports as Edge Ports OptionalConfiguring the Link Type of Ports OptionalConfiguring the Mode a Port Uses to Recognize/Send MSTP Packets OptionalConfiguringthe root bridgeEnabling the Output of Port State Transition Information Optional
