How do I determine whether devices belong to the same MST region

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Check whether the region configurations on devices are the same. If so, the devices belong to the same Multiple Spanning Tree (MST) region. If not, the devices belong to different MSTP regions. For example, devices with the same region name, VLAN-instance mapping, and revision level belong to the same region.

Other related questions:
How does an AR router determine a same MST region
The device fails to learn correct MAC entries because: - The device does not receive packets because a link is Down, an interface is not added to a VLAN, an interface joins in loop protocol calculation and is blocked, or the MAC address drift detection is configured and an interface or a MAC address is blocked. - There is a loop in the network, causing MAC entry flapping. - The MAC address learning function is disabled, or corresponding sticky MAC address already exists. - The number of MAC entries has reached the upper limit of the device. - A static or blackhole route is configured.

Why is the convergence for multiple MST regions slow
When a specified interface of the root bridge is faulty, the two packets that contain different root bridge information in an MST region may interact with each other continuously. The root bridge selection flaps for a period. As a result, the negotiation time is long and the network convergence is slow. Using the stp max-hops command, you can properly limit the maximum number of hops as required. Thus, the root bridge can be quickly confirmed and the convergence time can be shortened.

How can I determine whether an AP is qualified
1. If the AP is in any state except fault, for example, normal and download, the AP is qualified. [AC6605] display ap all V200R005 and earlier versions: All AP information: Normal[4],Fault[1],Commit-failed[0],Committing[0],Config[0],Download[0] Config-failed[0],Standby[0],Type-not-match[0],Ver-mismatch[0] ------------------------------------------------------------------------------ AP AP AP Profile AP AP /Region ID Type MAC ID State Sysname ------------------------------------------------------------------------------ 0 AP6510DN-AGN 1047-80ac-cc60 0/101 fault ap-0 1 AP5010DN-AGN 60de-4474-9640 0/0 normal ap-1 2 AP7110DN-AGN dcd2-fc04-b500 0/102 normal ap-2 ------------------------------------------------------------------------------ Total number: 5,printed: 5 V200R006 and later versions: Total AP information: nor : normal [3] ------------------------------------------------------------------------------------- ID MAC Name Group IP Type State STA Uptime ------------------------------------------------------------------------------------- 0 60de-4476-e360 area_1 ap-group1 10.23.100.254 AP6010DN-AGN nor 0 25S 1 dcd2-fc9d-0bb0 area_2 ap-group1 10.23.100.253 AP6010DN-AGN nor 0 20S 2 dcd2-fc04-b500 area_3 ap-group1 10.23.100.252 AP6010DN-AGN nor 0 10S ------------------------------------------------------------------------------------- Total: 3 NOTE: The preceding method applies to the scenario where an AP is added offline, for example, the AP is generated using configuration file or is manually added offline. If the AP is not added offline but you can still view information about the AP on the AC, the AP is working properly regardless of its status. 2. Observe whether the AP indicator works normally. See description of indicators in installation guide of the packaging to determine whether AP indicators are working properly. 3. You can determine whether an AP is qualified by logging in to the AP. Before the login, ensure that the network cable used to connect to the AP is working properly. NOTE: If the AP needs to connect to an Ethernet switch, ensure that the Ethernet cable is working properly. If the Ethernet cable is not working properly, for example, RJ-45 connectors are short-circuited, the AP may fail to be powered on or fail to work properly. Before connecting an Ethernet cable to the AP, use the cable test tool to check whether the cable is qualified. If the cable is unqualified, replace it. a. Check whether you can log in to the AP through the serial interface and enter the CLI. Connect the AP and PC using the serial cable. - Log in to the AP through the serial interface. On the AP serial interface, the baud rate is 9600 bit/s, the data bit is 8, the stop bit is 1, and there is no parity bit. - If the login succeeds, the AP is working properly. b. Check whether you can use a command to log in to the AP through the serial interface. NOTE: The default IP address of the AP is 169.254.1.1. Enter the default user name admin and initial password admin@huawei.com. - Assign the PC with an IP address on the same network segment as the default IP address of the AP. Connect the network cable to the AP and PC. - Log in to the AP using Telnet. If the login succeeds, the AP is working properly. If the login fails, reset the AP to restore the factory settings. Then, log in to the AP again.

Whether a service is provisioned on an MSTP device
Whether a service is provisioned on an MSTP device: 1. Search and view related service trails to check whether the service trails are complete and activated. 2. Check whether abnormal alarms are reported for the service board. 3. Test the customer services.

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