Specifications

switchport backup interface
547
When the change is applied
The change is applied immediately after setting values are changed.
Notes
1. When the Spanning Tree Protocol is used at the upstream switch, the status will be
listening or learning after recovering from the link-down state. Communication
cannot be restored immediately. In this case, we recommend that you set the
timer-based switch-back time to 30 seconds or longer.
Related commands
None