3Com 8807 - Loopback-Detection Enable; Loopback-Detection Enable Vlan

Ethernet Port Detection Configuration Commands 1045
64
PORT LOOPBACK DETECTION
COMMANDS
Ethernet Port
Detection
Configuration
Commands
loopback-detection
enable
Syntax
loopback-detection enable
undo loopback-detection enable
View
System view
Parameter
None
Description
Use the loopback-detection enable command to enable the global port
loopback detection function, so that the system can detecte whether there is an
external loop on each port in a VLAN which is enabled with the loopback
detection function.If a loop is found on a port, the switch will give out an alarm or
give out an alarm and shutdown the port according to your configuration.
Use the undo loopback-detection enable command to disable the global port
loopback function.
By default, the global port loopback detection function is disabled.
Related command: display loopback-detection.
Example
# Enable the global port loopback detection function.
<SW8800> system-view
[SW8800] loopback-detection enable
loopback-detection
enable vlan
Syntax
loopback-detection enable vlan { vlanlist | all }