1-34[device] stp interface GigabitEthernet1/0/1 instance 1 port priority 162) Perform this configuration in Ethernet port view system-view[device] interface GigabitEthernet1/0/1[device-GigabitEthernet1/0/1] stp instance 1 port priority 16Specifying Whether the Link Connected to a Port Is a Point-to-point LinkRefer to Specifying Whether the Link Connected to a Port Is Point-to-point Link.Enabling MSTPRefer to Enabling MSTP.Performing mCheck OperationPorts on an MSTP-enabled device can operate in three modes: STP-compatible, RSTP-compatible,and MSTP.A port on an MSTP-enabled device operating as an upstream device transits to the STP-compatiblemode when it has an STP-enabled device connected to it. When the STP-enabled downstream deviceis then replaced by an MSTP-enabled device, the port cannot automatically transit to the MSTP mode.It remains in the STP-compatible mode. In this case, you can force the port to transit to the MSTP modeby performing the mCheck operation on the port.Similarly, a port on an RSTP-enabled device operating as an upstream device turns to theSTP-compatible mode when it has an STP-enabled device connected to it. When the STP enableddownstream device is then replaced by an MSTP-enabled device, the port cannot automatically transitto the RSTP mode. It remains in the STP-compatible mode. In this case, you can force the port to transitto the RSTP mode by performing the mCheck operation on the port.Configuration PrerequisitesMSTP runs normally on the device.Configuration ProcedureYou can perform the mCheck operation in the following two ways.Perform the mCheck operation in system viewFollow these steps to perform the mCheck operation in system view:To do… Use the command… RemarksEnter system view system-view —Perform the mCheck operation stp [ interface interface-list ] mcheck RequiredPerform the mCheck operation in Ethernet port viewFollow these steps to perform the mCheck operation in Ethernet port view:
