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Fit AP V200R010C00 Command Reference

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
display stp global

display stp global

Function

The display stp global command displays global Spanning Tree Protocol (STP) information.

Format

display stp global

Parameters

None.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

When a device provides many interfaces, the display stp command output contains a large amount of information, and it is difficult to find the desired information quickly and view global information at a glance. The display stp brief command output, by comparison, displays information about spanning trees on interfaces, but not global information.

Using the display stp global command, you can view global STP information conveniently.

Example

# Display brief STP information about MSTP.

<Huawei> display stp global
Protocol Status            : Enabled                                            
Bpdu-filter default        : Disabled                                           
Tc-protection              : Disabled                                           
Tc-protection threshold    : 1                                                  
Tc-protection interval     : 2s                                                 
Edged port default         : Enabled                                            
Pathcost-standard          : Dot1t                                              
Timer-factor               : 3                                                  
Transmit-limit             : 10                                                 
Bridge-diameter            : 7                                                  
-------[CIST Global Info][Mode MSTP]-------                                     
CIST Bridge         :61440.781d-ba56-f06c                                       
Config Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 20                    
Active Times        :Hello 2s MaxAge 20s FwDly 15s MaxHop 20                    
CIST Root/ERPC      :61440.781d-ba56-f06c / 0 (This bridge is the root)         
CIST RegRoot/IRPC   :61440.781d-ba56-f06c / 0 (This bridge is the root)         
CIST RootPortId     :0.0                                                         
BPDU-Protection     :Disabled                                                   
TC or TCN received  :85                                                         
TC count per hello  :0                                                          
STP Converge Mode   :Normal                                                     
Time since last TC  :0 days 9h:12m:34s                                          
Number of TC        :13                                                         
Table 6-16  Description of the display stp global command output

Item

Description

Protocol Status

Spanning Tree Protocol (STP) status:
  • Enabled: STP is enabled.
  • Disabled: STP is disabled.

Bpdu-filter default

Whether the function of configuring device interfaces as Bridge Protocol Data Unit (BPDU) filter interfaces is enabled:
  • Enabled: The function is enabled.
  • Disabled: The function is disabled.

Tc-protection

Topology change (TC) protection status:
  • Enabled: TC protection is enabled.
  • Disabled: TC protection is disabled.

Tc-protection threshold

Threshold of TC packets that the device can handle and immediately refresh forwarding entries in a given period

Tc-protection interval

Time the STP takes to handle a given number of TC packets and immediately refresh forwarding entries

Edged port default

Whether the function of configuring all ports of the switch as edge ports is enabled:
  • Enabled: The function is enabled.
  • Disabled: The function is disabled.

Pathcost-standard

Method of calculating the STP path cost

Timer-factor

Multiplier of Hello time

Transmit-limit

Maximum number of BPDUs that the current interface can send per Hello time.

Bridge-diameter

Network diameter of the STP

CIST Bridge

Common and internal spanning tree (CIST) bridge ID
  • The first 16 bits represent the switch's priority in the CIST.
  • The last 48 bits represent the switch's MAC address.

Config Times

Configured bridge protocol parameters:
  • Hello: interval at which BPDUs are sent
  • MaxAge: maximum TTL of a BPDU
  • FwDly: delay in interface status transition
  • MaxHop: maximum number of hops in the MST region

Active Times

Bridge protocol parameters that are being used:
  • Hello: interval at which BPDUs are sent
  • MaxAge: maximum TTL of a BPDU
  • FwDly: delay in interface status transition
  • MaxHop: maximum number of hops in the MST region

CIST Root/ERPC

CIST root switch ID/Cost of the external path (path from the switch to the CIST root switch)

CIST RegRoot/IRPC

ID of the CIST region root bridge/Cost of the internal path (path from the switch to the CIST region root switch)

CIST RootPortId

ID of the CIST root interface. 0.0 indicates that the switch is the root switch and does not provide any root interface.

BPDU-Protection

Whether BPDU protection is enabled:
  • Disabled: BPDU protection is disabled.
  • Enabled: BPDU protection is enabled.

TC or TCN received

Number of received TC or topology change notification (TCN) packets

TC count per hello

Number of TC packets received per Hello time

STP Converge Mode

Convergence mode of the Spanning Tree Protocol (SPT), which can be fast or normal.

Time since last TC

Time since the last topology change

Number of TC

Number of topology changes

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Updated: 2019-07-18

Document ID: EDOC1100064353

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