TRENDnet PoE Web Smart Switch Series, User Manual, Page: 67 / 138

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TRENDnet User’s Guide
PoE Web Smart Switch Series
Loopback Detection
Enable loopback detection
Network > Loopback Detection
The loopback detection feature allows the switch to detect and prevent disruption from
loops that occur on uplink or downlink switches directly connected to your switch.
1. Log into your switch management page (see “ Access your switch management page ”
on page 5).
2. Click on Network and click on Loopback Detection.
3. Review the settings.

Loopback Detection Status – Select Enabled to enable the loopback detection
feature. Select Disabled to disabled the loopback detection feature.

Interval – Defines the interval your switch will check for loops.

Recover Time – Defines the time period when connectivity will be restored to a
port where a loop was previously detected and blocked.
Click Apply to save changes.
In the Loopback Detection table, select one of the Loopback Detection Status choices
from the pull down menu:
Ignore: This parameter indicates that the setting in the All row do not apply to the
Loopback Detection Status field. In other words, each port is set individually.

Enabled: This selection enables the Loopback Detection feature for each port.
This state must be enabled along with the Status field at the top of the page
before this feature can be active on the selected port.

Disabled: This selection disables the Loopback Detection feature on the
selected port.

Note: In the All row when you select Enable or Disable instead of Ignore, the
selection applies to all of the Switch ports.
Next to each entry modified, under the Action column, click Apply to save the changes.
4. At the bottom of the left hand panel, click Save.
5. Select the Config you would like to save the settings to, click Save Settings to Flash,
then click OK.
Note: This step saves all configuration changes to the NV-RAM to ensure that if the
switch is rebooted or power cycled, the configuration changes will still be applied.