3com S7906E Guide De Référence

 

1-22 

2: System level 

None 

Use the stp mcheck command to carry out the mCheck operation globally or on the current port.  

In a switched network, if a port on the device running MSTP (or RSTP) connects to a device running 

STP, this port will automatically migrate to the STP-compatible mode. However, if the device running 

STP is removed, the port will not be able to migrate automatically to the MSTP (or RSTP) mode, but will 

remain working in the STP-compatible mode. In this case, you can perform an mCheck operation to 

force the port to migrate to the MSTP (or RSTP) mode. 

Note that: 

z 

The  stp mcheck command is meaningful only when the device works in the MSTP (or 

RSTP-compatible) mode, not in the STP-compatible mode.  

z 

Configured in system view, the setting takes effect globally; configured in port view, the setting 

takes effect on the current port only.  

z 

Configured in Layer-2 aggregate port view, the setting takes effect only on the aggregate port. 

Configured on the member port in an aggregation group, the setting can take effect only after the 

port leaves the aggregation group. For detailed information about link aggregation, refer to Link 

Aggregation Configuration in the Access Volume.  

Related commands: stp mode.  

# Carry out mCheck on GigabitEthernet 2/0/1.  

<Sysname> system-view 

[Sysname] interface GigabitEthernet 2/0/1 

[Sysname-GigabitEthernet2/0/1] stp mcheck 

stp mode { stp | rstp | mstp } 

undo stp mode 

System view 

2: System level 

stp: Configures the MSTP-enabled device to work in STP-compatible mode.  

rstp: Configures an MSTP-enabled device to work in RSTP mode.