Perform the following steps on the S3328TP-EI where a loopback test needs to be performed.
Run:
system-view
The system view is displayed.
Run:
interface interface-type interface-number
The interface view is displayed.
Run:
loopbacktest internal
A loopback test is configured on the interface.
Run:
system-view
The system view is displayed.
Run:
interface interface-type interface-number
The interface view is displayed.
Run:
port link-flap protection enable
Link flapping protection is enabled on the interface.
By default, link flapping protection is disabled on an interface.
(Optional) Run:
port link-flap interval interval-value
The link flapping detection interval is set.
By default, the link flapping detection interval is 10s.
(Optional) Run:
port link-flap threshold threshold-value
The number of link flapping events is set.
By default, the LS-S3328TP-EI-24S-DC number of link flapping events on an interface is 5.