Configuring Loop Prevention on a Port

Procedure

1. Run system-view

   The system view is displayed.

2. Run interface interface-type interface-number

   The view of the root port or alternate port is displayed.

3. Run stp loop-protection

   Loop prevention is enabled on the root port or alternate port.

   By default, loop prevention is disabled on a port.

   

   An alternate port is a backup for a root port. If a device has an alternate port, configure loop prevention on both the root port and the alternate port.

   Root protection and loop prevention cannot be configured on the same port.