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H3C Loopback Detection Feature Manual

Release 2107

Operation

Enable loopback

detection on a

specified port

Enable loopback

port control on the

trunk or hybrid port

Enable the loopback

port auto-shutdown

function

Configure the

system to run

loopback detection

on all VLANs of the

current trunk or

hybrid port

Caution:

To enable loopback detection on a specific port, you must use the

loopback-detection enable command in both system view and the specific port

view.

After you use the undo loopback-detection enable command in system view,

loopback detection will be disabled on all ports.

Chapter 1 Loopback Detection Configuration

Command

loopback-detection

enable

loopback-detection

control enable

loopback-detection

shutdown enable

loopback-detection

per-vlan enable

1-3

Remarks

Optional

By default, the loopback

detection function is enabled on

ports if the device boots with the

default configuration file

(config.def); if the device boots

with null configuration, this

function is disabled.

Optional

By default, the loopback port

control function is enabled on

ports if the device boots with the

default configuration file

(config.def); if the device boots

with null configuration, this

function is disabled.

Optional

By default, the loopback port

auto-shutdown function is

enabled on ports if the device

boots with the default

configuration file (config.def); if

the device boots with null

configuration, this function is

disabled.

Optional

By default, the system runs

loopback detection only on the

default VLAN of the current trunk

or hybrid port.