The length of time between switching over a redundant port pair and switching back, when a timed switchover is done to the port. This object can only be written in the same request that sets s5EnRedPortSwitchoverStatus to timedSwitchover(2). Afterwards, it indicates the amount of time left before the timed switchover is completed, at which time another switchover occurs and s5EnRedSwitchoverStatus is changed to other(1). This object has the value of zero if the port is not undergoing a timed switchover, or if the amount of time is not available.