Configuring Loopback Detection For Ethernet Port(S) - H3C S3100 8C SI Operation Manual

Operation Manual – Port Basic Configuration
H3C S3100 Series Ethernet Switches
messages to the terminal, and remove the corresponding MAC forwarding entry.
After the loop is removed, the port will automatically resume the normal forwarding
state.
If the loopback port auto-shutdown function is enabled on the port, the system will
shut down the port and send log messages to the terminal. After the loop is
removed, you need to use the undo shutdown command to bring up the port.
Note:
You cannot enable both the loopback port control function and the loopback port
auto-shutdown function on a port. If you do so, the function configured later will take
effect.

1.1.6 Configuring Loopback Detection for Ethernet Port(s)

Table 1-5 Configure loopback detection for Ethernet port(s)
Operation
Enter system view
Enable loopback
detection globally
Enable loopback
detection on the
specified ports in
bulk
Set the interval for
performing port
loopback detection
Enter Ethernet port
view
Command
system-view
loopback-detection
enable
loopback-detection
interface-list enable
loopback-detection
interval-time time
interface interface-type
interface-number
1-5
Chapter 1 Port Basic Configuration
Remarks
—
Optional
By default, the global loopback
detection function is enabled if
the device boots with the default
configuration file (config.def); if
the device boots with null
configuration, this function is
disabled.
Optional
By default, the loopback
detection function is enabled on
ports if the device boots with the
default configuration file
(config.def); if the device boots
with null configuration, this
function is disabled.
At present, you can configure the
loopback detection for ports in
bulk on the S3100-EI series
(except the S3100-EPON-EI
series) switches only
Optional
The default is 30 seconds.
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