Operation Manual – Port
Quidway S3100 Series Ethernet Switches
Chapter 1 Basic Port Configuration
Huawei Technologies Proprietary
1-8
Note:
z
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.
z
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.
z
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.
z
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
Command
Remarks
Enter system view
system-view
—
Enable loopback
detection globally
loopback-detection
enable
Optional
By default, loopback
detection is not enabled
globally.
Set time interval for
port loopback
detection
loopback-detection
interval-time time
Optional
The default interval is 30
seconds.
Enter Ethernet port
view
interface interface-type
interface-number
—
Enable loopback
detection on a
specified port
loopback-detection
enable
Optional
By default, port loopback
detection is not enabled.
Enable loopback port
control on the trunk or
hybrid port
loopback-detection
control enable
Optional
By default, loopback port
control is not enabled.