Display Stp Down-Port - H3C S5120-SI Series Command Reference Manual

Table 1-4 display stp abnormal-port command output description
Field
MSTID
Blocked Port
Reason

display stp down-port

Syntax
display stp down-port
View
Any view
Default Level
1: Monitor level
Parameters
None
Description
Use the display stp down-port command to display the information about ports blocked by STP
protection functions.
These functions include:
BPDU attack guard function
MSTP BPDU format frequent change protection function
Examples
# View the information about ports blocked by STP protection functions.
<Sysname> display stp down-port
Down Port
GigabitEthernet1/0/1
GigabitEthernet1/0/2
Table 1-5 display stp down-port command output description
Field
Down Port
Reason
ID of the MSTI to which an abnormally blocked port belongs
Name of an abnormally blocked port
Reason that caused abnormal blocking of the port.
ROOT-Protected: root guard function
LOOP-Protected: loop guard function
Formatcompatibility-Protected: MSTP BPDU format incompatibility
protection function
Reason
BPDU-Protected
Formatfrequency-Protected
Name of a blocked port
Reason that caused the port to be blocked.
BPDU-Protected: BPDU attack guard function
Formatfrequency-Protected: MSTP BPDU format frequent change
protection function
1-9
Description
Description