1-33[Sysname] stp interface GigabitEthernet 1/0/1 instance 1 port priority 162) Perform this configuration in Ethernet port view system-view[Sysname] interface GigabitEthernet 1/0/1[Sysname-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 switch can operate in three modes: STP-compatible, RSTP-compatible,and MSTP.A port on an MSTP-enabled switch operating as an upstream switch transits to the STP-compatiblemode when it has an STP-enabled switch connected to it. When the STP-enabled downstream switch isthen replaced by an MSTP-enabled switch, the port cannot automatically transit to the MSTP mode. Itremains 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 switch operating as an upstream switch turns to theSTP-compatible mode when it has an STP-enabled switch connected to it. When the STP enableddownstream switch is then replaced by an MSTP-enabled switch, the port cannot automatically transitto the MSTP-compatible mode. It remains in the STP-compatible mode. In this case, you can force theport to transit to the MSTP-compatible mode by performing the mCheck operation on the port.Configuration PrerequisitesMSTP runs normally on the switch.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:
