This object triggers a manual failover between the master and slave ports of an EPON fiber-backup group. Setting it to true(2) swaps the two ports' roles, but only works if the slave port's status is already ready, so an admin uses it to force traffic onto the backup fiber for planned maintenance or testing. For example, an admin sets hpnicfEponFBSwitchover to true(2) on a group to move traffic off a degrading master fiber and onto its healthy slave port.