Display Loopback-Detection - HP 3100 v2 Series Command Reference Manual

Field
Loopback
detection-protected
BPDU-protected
Monitor-Link uplink down

display loopback-detection

Syntax
display loopback-detection [ | { 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 loopback-detection to display the status of the loopback detection function.
If loopback detection is enabled, this command also displays the detection interval and ports in a
loop condition.
Examples
# Display information about loopback detection.
<Sysname> display loopback-detection
Loopback detection is running.
Detection interval is 30 seconds.
No port is detected with loopback.
Table 7 Command output
Field
Detection interval time is 30 seconds.
No port is detected with loopback.
Description
The interface is shut down because a loop is detected on it.
The interface is shut down by the BPDU guard function.
The uplink of the monitor link group to which the interface belongs is down.
Description
Loopback detection interval is 30 seconds.
No loops are detected on ports.
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