Setting Loopback Detection For An Ethernet Port - Huawei Quidway S3100 Series Operation Manual

Operation Manual – Port
Quidway S3100 Series Ethernet Switches
Note:
If you specify the source aggregation group ID, the system uses the port with the
smallest port number in the aggregation group as the source.
If you specify the destination aggregation ID, the configuration of the source port will
be copied to all ports in the aggregation group.

1.2.8 Setting Loopback Detection for an Ethernet Port

Loopback detection is used to monitor if loopback occurs on a switch port.
After you enable loopback detection on Ethernet ports, the switch can monitor if
external loopback occurs on them. If there is a loopback port found, the switch will put it
under control.
If loopback is found on an access port, the system disables the port, sends a Trap
message to the client and removes the corresponding MAC forwarding entry.
If loopback is found on a trunk or hybrid port, the system sends a Trap message to
the client. When the loopback port control function is enabled on these ports, the
system disables the port, sends a Trap message to the client and removes the
corresponding MAC forwarding entry.
Table 1-10 Set loopback detection for an Ethernet port
Operation
Enter system view
Enable
detection globally
Set time interval for
port
detection
Enter Ethernet port
view
Enable
detection
specified port
Enable loopback port
control on the trunk or
hybrid port
Command
system-view
loopback loopback-detection
enable
loopback-detection
loopback
interval-time time
interface
interface-number
loopback
loopback-detection
on a
enable
loopback-detection
control enable
Huawei Technologies Proprietary
1-8
Chapter 1 Basic Port Configuration
—
Optional
By
detection is not enabled
globally.
Optional
The default interval is 30
seconds.
interface-type
—
Optional
By default, port loopback
detection is not enabled.
Optional
By default, loopback port
control is not enabled.
Remarks
default, loopback