3com 8807 Guida Di Riferimento
Ethernet Port Detection Configuration Commands
1045
64
P
ORT
L
OOPBACK
D
ETECTION
C
OMMANDS
Ethernet Port
Detection
Configuration
Commands
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.
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.
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 }