Function
This command is used to query the details of the multiple spanning tree
protocol (MSTP). You can analyze and maintain the network topology based on the
status and statistical information about MSTP.
Parameters
| Parameter | Description | Value |
|---|---|---|
| instance instance-id | Indicates the spanning tree instance ID. When you need to query the specified spanning tree instance, select this parameter. | Numeral type. Range: 0-16. The value 0 indicates common and internal spanning tree (CIST) instance (instance 0), which cannot be deleted. |
| port frameid/slotid/portid | Identifies the shelf/slot/port ID. Enter "/" between the shelf, slot and port IDs. When you need to query the MSTP details of a specified port, use this parameter. | Please see Differences Between Shelves. |
Usage Guidelines
You can analyze and maintain the network topology based on the
status and statistical information about MSTP.
- If you do not specify the spanning tree instance ID and port ID, the system displays the spanning tree information about all instances on all ports, in the sequence of the port ID.
- If you specify the spanning tree instance ID, the system displays only the spanning tree information about this instance on all ports.
- If you specify only the port ID, the system displays the information about all spanning tree instances on this port, in the sequence of the port ID.
- If you specify both the spanning tree instance ID and the port ID, the system displays instance ID and then displays the spanning tree information about the port.
Example
To query the global details of MSTP, do as follows:
huawei#display stp
The bridge is executing the IEEE Multiple Spanning Tree Protocol
Bridge Diameter : 7 Max Hops : 20
PathCost standard : LEGACY BPDU-Protection : disabled
Time Factor : 3
TC or TCN received : 0 Time since last TC : 9 days 2h:27m:33s
MD5-key : 13AC06A62E47FD51F95D2BA243CD0346
============================== Instance 0 ==================================
Bridge Priority : 32768 MAC Address : 00e0-fc00-c16b
Hello Time: 2 sec Forward Delay: 15 sec Max Age: 20 sec
IST Root Priority : 32768 MAC Address : 00e0-fc00-c16b
Hello Time: 2 sec Forward Delay: 15 sec Max Age: 20 sec
CST Root Priority : 32768 MAC Address : 00e0-fc00-c16b
Hello Time: 2 sec Forward Delay: 15 sec Max Age: 20 sec
Path cost to IST root bridge is 0
Path cost to CST root bridge is 0
-----------------------------------------------------------------------------
Index F/ S/ P Priority Cost Admin-State Role State Type
-----------------------------------------------------------------------------
1 0/ 3/ 0 128 200000 Enabled Disa Down None
2 0/ 3/ 1 128 200000 Enabled Disa Down None
-----------------------------------------------------------------------------
To query the MSTP details of instance 1, do as follows: huawei#display stp instance 1
The bridge is executing the IEEE Multiple Spanning Tree Protocol
Bridge Diameter : 7 Max Hops : 20
PathCost standard : LEGACY BPDU-Protection : disabled
Time Factor : 3
TC or TCN received : 0 Time since last TC : 9 days 2h:29m: 4s
MD5-key : 13AC06A62E47FD51F95D2BA243CD0346
============================== Instance 1 ==================================
Bridge Priority : 32768 MAC Address : 00e0-fc00-c16b
Hello Time: 2 sec Forward Delay: 15 sec Max Age: 20 sec
IST Root Priority : 32768 MAC Address : 00e0-fc00-c16b
Hello Time: 2 sec Forward Delay: 15 sec Max Age: 20 sec
Path cost to IST root bridge is 0
To query the MSTP details of port 0/19/0, do as
follows: huawei#display stp port 0/19/0
----[CIST][Port1(Down)]----
Port Protocol :enabled
Port Role :CIST Disabled Port
Port Priority :128
Port Cost :Config=auto / Active=200000
Desg. Bridge/Port :32768.00e0-fc00-c16b / 128.1
Port Edged(Admin) :disabled
Point-to-point :Config=auto / Active=false
Transit Limit :3 packets/hello-time
Protection Type :None
Port Stp Mode :Stp
Port Compliance :auto
PortTimes :Hello 2 s MaxAge 20 s FwDly 15 s Message Age 0 s RemHop 20
BPDU Sent :0
TCN: 0, Config: 0, RST: 0, MST: 0
BPDU Received :0
TCN: 0, Config: 0, RST: 0, MST: 0
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