R3166-R3206-HP High-End Firewalls Network Management Command Reference-6PW101

Table Of Contents
63
View
Any view
Default level
1: Monitor level
Parameters
None
Description
Use the display stp down-port command to display information about ports shut down by spanning tree
protection functions.
Examples
# Display information about ports shut down by spanning tree protection functions.
<Sysname> display stp down-port
Down Port Reason
GigabitEthernet0/1 BPDU-Protected
GigabitEthernet0/2 Formatfrequency-Protected
Table 16 Output description
Field Description
Down Port Name of a port shut down by the spanning tree protection functions.
Reason
Reason that the port was shut down:
BPDU-Protected—BPDU guard function.
Formatfrequency-Protected—MSTP BPDU format frequent change protection function.
display stp history
Syntax
display stp [ instance instance-id ] history
View
Any view
Default level
0: Visit level
Parameters
instance instance-id: Displays the historical port role calculation information for a specific MSTI. The
value of instance-id ranges from 0 to 15, where 0 represents the CIST.
Description
Use the display stp history command to display the historical port role calculation information for the
specified MSTI or all MSTIs.
In STP or RSTP mode, the displayed information is sorted by port role calculation time.
In MSTP mode, follow these guidelines: