What occurs during a scheduled electronic programmable logic device (EPLD) update of a Cisco fabric...

All traffic through the system is stopped for the duration of the update, and the switch is power cycled after the upgrade is complete.

All control plane traffic is stopped for the duration of the update, and the switch remains operational for the duration of the upgrade.

The redundant supervisor module takes over for the duration of the update, there is no service disruption.

The redundant supervisor module takes over for the duration of the update, and the switch is rebooted after the upgrade is complete.