36
<Sysname> system-view
[Sysname] loopback-detection interval-time 10
loopback-detection multi-port-mode enable
Syntax
loopback-detection multi-port-mode enable
undo loopback-detection multi-port-mode enable
View
System view
Default level
2: System level
Parameters
None
Description
Use loopback-detection multi-port-mode enable to enable multi-port loopback detection.
Use undo loopback-detection multi-port-mode enable to restore the default.
By default, multi-port loopback detection is disabled.
When detecting a loop between two interfaces, the switch takes the following actions on the looped
interface:
• If the looped interface is an access interface, the switch performs the configured protective action,
sends traps to the terminals, and deletes all MAC address entries of the interface.
• If the looped interface is a trunk or hybrid interface, the switch sends traps to the terminals. If
loopback detection control is enabled, the switch performs the configured protection action on the
looped interface and deletes all MAC address entries of the interface.
NOTE:
To enable multi-port loopback detection, you must configure the loopback-detection multi-port-mode
enable and loopback-detection enable commands in system view, and configure the loopback-detection
enable command in the view of the related interfaces.
Examples
# Enable multi-port loopback detection to monitor loops between Ethernet 1/0/1 and Ethernet 1/0/2.
<Sysname> system-view
[Sysname] loopback-detection enable
[Sysname] loopback-detection multi-port-mode enable
[Sysname] interface ethernet 1/0/1
[Sysname-Ethernet1/0/1] loopback-detection enable
[Sysname-Ethernet1/0/1] quit
[Sysname] interface ethernet 1/0/2
[Sysname-Ethernet1/0/2] loopback-detection enable
To Next Page
Loading...
Need help?
General
