117
Field Description
Max-Hoped BPDUs BPDUs whose maximum hops were exceeded.
TC Detected TC BPDUs detected.
TC Sent TC BPDUs sent.
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 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, a case-sensitive string of 1 to 256 characters.
Description
Use display stp down-port 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
Ethernet1/0/1 BPDU-Protected
Ethernet1/0/2 Formatfrequency-Protected
Table 28 Command output
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.
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