16.1.5 Automatic switch-back function

If the primary port fails, the secondary port replaces the primary port as the active port.Automatic switch-back automatically restores the primary port as the active port when it is restored after a failure. You can specify from 0 (immediate) to 300 seconds for the switch-back wait time.

If you have used an operation command to change the active port, automatic switch-back usually does not work. However, in either of the following situations, automatic switch-back occurs:

• An operation command has been used to change the active port, after which the applicable configuration command for specifying automatic switch-back or changing the automatic switch-back settings was used.

• An operation command has been used to change the active port after failure of the primary port or restoration of the primary port.