Enabling Loopback Test - H3C S5600 Series Operation Manual

Operation Manual – Port Basic Configuration
H3C S5600 Series Ethernet Switches
Enter Ethernet port
view
Enable loopback
detection on a
specified port
Enable loopback port
control on the trunk or
hybrid port
Configure the system
to run loopback
detection on all VLANs
of the current trunk or
hybrid port
Caution:
To enable loopback detection on a specific port, you must use the
loopback-detection enable command in both system view and the specific port
view.
After you use the undo loopback-detection enable command in system view,
loopback detection will be disabled on all ports.

1.1.7 Enabling Loopback Test

You can configure the Ethernet port to run loopback test to check if it operates normally.
The port running loopback test cannot forward data packets normally. The loopback
test terminates automatically after a specific period.
Follow these steps to enable loopback test:
Enter system view
Enter Ethernet port view
Configure the Ethernet port to
run loopback test
To do... Use the command...
interface interface-type
interface-number
loopback-detection
enable
loopback-detection
control enable
loopback-detection
per-vlan enable
To do...
Chapter 1 Port Basic Configuration
—
Required
By default, port loopback
detection is disabled.
Optional
By default, loopback port
control is not enabled.
Optional
By default, the system runs
loopback detection only on
the default VLAN of the
current trunk or hybrid port.
Use the command...
system-view
interface interface-type
interface-number
loopback { external | internal }
1-6
Remarks
Remarks
—
—
Required