Is the MSTP status of interfaces affected when the MSTP status of a member interface in the MST region changes

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Yes. When the MSTP status of a member interface in the MST region changes, the device recalculates the MSTP status of all member interfaces in the MST region.

Other related questions:
Does a change in the MSTP status of an AR router interface affect the MSTP status of other interfaces in the same MST region
If the MSTP status of an interface changes, the device will recalculate the status of all other interfaces in the MST region.

Locating the fault when the MSTP status of a WLAN device is abnormal
When the MSTP status of a WLAN device is abnormal, perform the following operations to locate the fault: 1. Check whether configurations on each interface of the device are correct. The configurations of interfaces in the same MST domain must be the same. 2. Run the debugging stp [ interface interface-type interface-number ] packet { all | send | receive } command to check whether each interface properly sends and receives STP packets. 3. If the fault persists, collect log, alarm, and debugging information, and contact Huawei technical personnel.

How can I configure an MSTP region on an S series switch
For S (except the S1700) series switches, an MSTP region is configured in the stp region-configuration view. Switches in the same MSTP region share the same MSTP region configuration. A switch is deleted from the region if the MSTP region setting of the switch is changed. The following parameters can be set for an MSTP region: 1. Format selector: The default value is 0 and cannot be set through the command. 2. Region name: It is the bridge MAC address by default. 3. Revision level: The default value is 0. 4. Instance/Vlans Mapped: Mapping between instances and VLANs. By default, all VLANs are mapped to instance 0.

Which status do MSTP interfaces of an AR router have and how do they process packets
MSTP interface status: - Forwarding: In this state, an interface forwards user traffic. Only the root interface or a specified interface can be in this state. - Learning: This is a transitional state. In this state, a switch will build a MAC address table according to the user traffic it receives (but not forward the user traffic). That is why this state is referred to as a learning state. - Discarding: In this state, an interface blocks packets and does not learn MAC addresses.

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