Loop Protection
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Loop Protection
Loops on a network consume resources and can degrade network performance. Detecting loops man-
ually can be very cumbersome and time consuming. The HPE OfficeConnect 1920S series switch soft-
ware provides an automatic loop protection feature.
When loop protection is enabled on the switch and on one or more interfaces (ports or trunks), the
interfaces send loop protection protocol data units (PDUs) to the multicast destination address
09:00:09:09:13:A6. When an interface receives a loop protection PDU, it compares the source MAC
address with its own. If the MAC addresses match, a loop is detected and a configured action is taken,
which may include shutting down the port for a specified period.
An interface can be configured to receive and take action in response to loop protection PDUs, but not
to send out the PDUs itself.
Ports on which loop protection is disabled drop the loop protection packets silently.
Loop Protection Status
Use the Loop Protection Status page to display the status of this feature on each port. To display this
page, click
Switching
>
Loop Protection
in the navigation pane.
Figure 34.
Loop Protection Status Page
