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14
Field Description
Loopback
detection-protected
The interface is shut down because a loop is detected on it.
BPDU-protected
The interface is shut down by the BPDU guard function.
Monitor-Link uplink down
The uplink of the monitor link group to which the interface belongs is 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 Description
Detection interval time is 30 seconds.
Loopback detection interval is 30 seconds.
No port is detected with loopback.
No loops are detected on ports.