3com 8807 Reference Guide
Ethernet Port Detection Configuration Commands
1047
loopback-detection
control
Syntax
loopback-detection control
undo loopback-detection control
View
Ethernet port view
Parameter
None
Description
Use the loopback-detection control command to enable the control function of
port loopback detection, that is, when finding a loop exist on a port of a VLAN,
the system will report the trap information and shutdown the port as well.
port loopback detection, that is, when finding a loop exist on a port of a VLAN,
the system will report the trap information and shutdown the port as well.
Use the undo loopback-detection control command to disable the control
function of port loopback detection, that is, when finding a loop exist on a port of
a VLAN, the system only reports the trap information. The port will work normally.
function of port loopback detection, that is, when finding a loop exist on a port of
a VLAN, the system only reports the trap information. The port will work normally.
By default, the loopback detection control function on ports is disabled.
Example
# Enable the port loopback detection control function.
<SW8800> system-view
[SW8800] interface Ethernet 2/1/1
[3Com-GigabitEthernet2/1/1] loopback-detection control
loopback-detection
disable
Syntax
loopback-detection disable
undo loopback-detection disable
View
Ethernet port view
Parameter
None
Description
Use the loopback-detection disable command to exclude the loopback
detection on a port. The port executing this command will not receive the
loopback detection packet sent by the CPU.
detection on a port. The port executing this command will not receive the
loopback detection packet sent by the CPU.
Use the undo loopback-detection disable command to restore the loopback
detection function on a port.
detection function on a port.
By default, the port loopback detection function is enabled.
Example
# Disable the port loopback detection.