100
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 abnormal-port command to display information about ports blocked by the following
STP protection functions:
• Root guard function
• Loop guard function
• MSTP BPDU format incompatibility protection function
Examples
# Display information about ports blocked by STP protection functions.
<Sysname> display stp abnormal-port
MSTID Blocked Port Reason
1 GigabitEthernet1/0/1 ROOT-Protected
2 GigabitEthernet1/0/2 LOOP-Protected
2 GigabitEthernet1/0/3 Formatcompatibility–Protected
Table 25 Output description
Field Description
Blocked Port Name of a blocked port, which corresponds to the related MSTI.
Reason
Reason that the port was blocked.
• ROOT-Protected—Root guard function
• LOOP-Protected—Loop guard function
• Formatcompatibility-Protected—MSTP BPDU format incompatibility protection function
display stp bpdu-statistics
Syntax
display stp bpdu-statistics [ interface interface-type interface-number [ instance instance-id ] ] [ | { begin
| exclude | include } regular-expression ]
View
Any view
Default level
1: Monitor level
Parameters
interface interface-type interface-number: Displays the BPDU statistics on a specified port, where
interface-type interface-number indicates the port type and number.
instance instance-id: Displays the BPDU statistics of a specified MSTI on a specified port. The instance-id
argument ranges from 0 to 16, where 0 represents the CIST.
|: 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.