H3C S7500E Series Command Manual

Command Manual – MSTP
H3C S7500E Series Ethernet Switches Chapter 1 MSTP Configuration Commands
1-7
Table 1-4 Description on the fields of the display stp abnormal-port command
Field Description
Down Port Name of blocked port
Reason
Reason that caused the port to be blocked.
z BPDU-Protected: BPDU attack guard action
z Formatfrequency-Protected: MSTP BPDU format
compatibility protection action
1.1.6 display stp history
Syntax
display stp [ instance instance-id ] history [ slot slot-number ]
View
Any view
Parameters
instance instance-id: Displays the historic port role calculation information of a
particular spanning tree instance. The effective range of instance-id is 0 to 31, with 0
representing the common internal spanning tree (CIST).
slot slot-number: Displays the historic port role calculation information of the card on
the specified slot.
Description
Use the display stp history command to view the historic port role calculation
information of the specified spanning tree instance or all spanning tree instances.
Note that:
z If you do not specify a spanning tree instance ID, this command will display the
historic port role calculation information of all spanning tree instances. The
displayed information is sequenced by instance ID, and in the timing of port role
calculation in each instance.
z If you specify a spanning tree instance ID, this command will display the historic
port role calculation information of only this specified spanning instance, in the
timing of port role calculation.
Examples
# View the historic port role calculation information of the card on slot 1 in MSTP
instance 2.
<Sysname> display stp instance 2 history slot 1

H3C S7500E Series Specifications

General

Brand	H3C
Model	S7500E Series
Category	Switch
Language	English