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Fit AP V200R010C00 Command Reference

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display stp topology-change

display stp topology-change


The display stp topology-change command displays the statistics about STP topology changes.


display stp [ instance instance-id ] topology-change


Parameter Description Value
instance instance-id

Displays statistics about the topology changes of a specified STP instance.

If this parameter is not specified, the statistics about the topology changes of a CIST instance are displayed.

The value is an integer ranging from 0 to 4094. Value 0 refers to CIST.


All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

On a Layer 2 network running STP, a device clears ARP entries and MAC entries after receiving topology change packets. If a device receives too many topology change packets, the device will frequently clear ARP entries and MAC entries, causing high CPU usage. As a result, network traffic is instable.

The display stp topology-change command can be used to display the statistics about STP topology changes. If the statistics increase, network flapping occurs.


# Display statistics about STP topology changes.

<Huawei> display stp topology-change
 CIST topology change information                                               
   Number of topology changes             :0
Table 6-18  Description of the display stp topology-change command output



Number of topology changes

Total number of topology changes since MSTP initialization.

Time since last topology change

Time since the last topology change

Topology change initiator(notified)

Interface that initiates a topology change because the interface status changes to detected

Topology change last received from

Source bridge MAC address contained in a topology change packet

Number of generated topologychange traps

Total number of generated topology-change traps.

Number of suppressed topologychange traps

Total number of suppressed topology-change traps.

Updated: 2019-07-18

Document ID: EDOC1100064353

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