84
Field
Description
TC Received
TC BPDUs received.
display stp down-port
Syntax
display stp down-port
[
|
{
begin
|
exclude
|
include
}
regular-expression
]
View
Any view
Default level
1: Monitor level
Parameters
|
: Filters command output by specifying a regular expression. For more information about regular
expressions, see the
Fundamentals Configuration Guide
.
begin
: Displays the first line that matches the specified regular expression and all lines that follow.
exclude
: Displays all lines that do not match the specified regular expression.
include
: Displays all lines that match the specified regular expression.
regular-expression
: Specifies a regular expression, which is a case sensitive string of 1 to 256 characters.
Description
Use the
display stp down-port
command to display information about ports shut down by the following
STP protection functions:
•
BPDU attack guard function
•
MSTP BPDU format frequent change protection function
Examples
# Display information about ports shut down by STP protection functions.
<Sysname> display stp down-port
Down Port Reason
GigabitEthernet1/0/1 BPDU-Protected
GigabitEthernet1/0/2 Formatfrequency-Protected
Table 22
Output description
Field
Description
Down Port
Name of a port shut down by the STP protection functions.
Reason
Reason that the port was shut down:
•
BPDU-Protected—BPDU guard function.
•
Formatfrequency-Protected—MSTP BPDU format frequent change protection function.