[device] stp interface GigabitEthernet1/0/1 instance 1 port priority 16

2)Perform this configuration in Ethernet port view

<device> system-view

[device] interface GigabitEthernet1/0/1 [device-GigabitEthernet1/0/1] stp instance 1 port priority 16

Specifying Whether the Link Connected to a Port Is a Point-to-point Link

Refer to Specifying Whether the Link Connected to a Port Is Point-to-point Link.

Enabling MSTP

Refer to Enabling MSTP.

Performing mCheck Operation

Ports 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-compatible mode when it has an STP-enabled device connected to it. When the STP-enabled downstream device is 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 mode by performing the mCheck operation on the port.

Similarly, a port on an RSTP-enabled device operating as an upstream device turns to the STP-compatible mode when it has an STP-enabled device connected to it. When the STP enabled downstream device is then replaced by an MSTP-enabled device, the port cannot automatically transit to the RSTP mode. It remains in the STP-compatible mode. In this case, you can force the port to transit to the RSTP mode by performing the mCheck operation on the port.

Configuration Prerequisites

MSTP runs normally on the device.

Configuration Procedure

You can perform the mCheck operation in the following two ways.

Perform the mCheck operation in system view

Follow these steps to perform the mCheck operation in system view:

To do…

Use the command…

Remarks

Enter system view

system-view

 

 

 

Perform the mCheck operation

stp [ interface interface-list] mcheck

Required

 

 

 

Perform the mCheck operation in Ethernet port view

Follow these steps to perform the mCheck operation in Ethernet port view:

1-34

Page 204
Image 204
3Com WX3000 Performing mCheck Operation, Perform the mCheck operation in system view, Stp interface interface-list mcheck